fix media_selector

lib_media_selector/README.md

@@ -1,6 +1,6 @@
 # 多媒体文件选择库
 
-目前基于boxing修改
+基于 boxing 修改，因为 [Android Q SQLiteException](https://github.com/bilibili/boxing/issues/154) 问题没有被修复，暂时依赖源码。
 
 ## 1 AndroidN  在 FileProvider 的 xm l配置中加入：
 
@@ -13,7 +13,7 @@
 
 [RotatePhotoView](https://github.com/ChenSiLiang/RotatePhotoView)
 
-## 3 其他备选参考
+## 3 other options
 
 -  [boxing](https://github.com/Bilibili/boxing)
 -  [Matisse](https://github.com/zhihu/Matisse)

lib_media_selector/build.gradle

@@ -27,6 +27,10 @@ android {
         main {
             java.srcDirs += "src/github/java"
             res.srcDirs += "src/github/res"
+            java.srcDirs += "src/boxing/java"
+            res.srcDirs += "src/boxing/res"
+            java.srcDirs += "src/boxing-impl/java"
+            res.srcDirs += "src/boxing-impl/res"
         }
     }
 
@@ -36,28 +40,8 @@ dependencies {
     //support
     implementation androidLibraries.appcompat
     implementation androidLibraries.material
-
     /*imageLoader*/
     compileOnly thirdLibraries.glide
-
-    implementation('com.bilibili:boxing:1.0.4') {
-        exclude group: 'com.android.support'
-        exclude group: 'com.chensl.rotatephotoview'
-        exclude group: 'com.android.support.test.espresso'
-        exclude group: 'com.android.support.test'
-        exclude group: 'org.powermock'
-        exclude group: 'org.robolectric'
-    }
-
-    implementation('com.bilibili:boxing-impl:1.0.4') {
-        exclude group: 'com.android.support'
-        exclude group: 'com.chensl.rotatephotoview'
-        exclude group: 'com.android.support.test.espresso'
-        exclude group: 'com.android.support.test'
-        exclude group: 'org.powermock'
-        exclude group: 'org.robolectric'
-    }
-
     implementation('com.github.yalantis:ucrop:2.2.4') {
         exclude group: 'com.squareup.okhttp3'
     }

lib_media_selector/src/boxing-impl/java/com/bilibili/boxing_impl/BoxingResHelper.java

@@ -0,0 +1,32 @@
+package com.bilibili.boxing_impl;
+
+import com.bilibili.boxing.model.BoxingManager;
+import com.ztiany.mediaselector.R;
+
+import androidx.annotation.DrawableRes;
+
+/**
+ * Help getting the resource in config.
+ *
+ * @author ChenSL
+ */
+
+public class BoxingResHelper {
+
+    @DrawableRes
+    public static int getMediaCheckedRes() {
+        int result = BoxingManager.getInstance().getBoxingConfig().getMediaCheckedRes();
+        return result > 0 ? result : R.drawable.ic_boxing_checked;
+    }
+
+    @DrawableRes
+    public static int getMediaUncheckedRes() {
+        int result = BoxingManager.getInstance().getBoxingConfig().getMediaUnCheckedRes();
+        return result > 0 ? result : R.drawable.shape_boxing_unchecked;
+    }
+
+    @DrawableRes
+    public static int getCameraRes() {
+        return BoxingManager.getInstance().getBoxingConfig().getCameraRes();
+    }
+}

lib_media_selector/src/boxing-impl/java/com/bilibili/boxing_impl/WindowManagerHelper.java

@@ -0,0 +1,89 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing_impl;
+
+import android.content.Context;
+import android.util.DisplayMetrics;
+import android.util.TypedValue;
+import android.view.Display;
+import android.view.WindowManager;
+
+/**
+ * @author ChenSL
+ */
+public class WindowManagerHelper {
+    private static WindowManager getWindowManager(Context context) {
+        Object service = context.getSystemService(Context.WINDOW_SERVICE);
+        if (service == null)
+            return null;
+
+        return (WindowManager) service;
+    }
+
+    private static Display getDefaultDisplay(Context context) {
+        WindowManager wm = getWindowManager(context);
+        if (wm == null)
+            return null;
+
+        return wm.getDefaultDisplay();
+    }
+
+    public static int getScreenHeight(Context context) {
+        DisplayMetrics dm = getDisplayMetrics(context);
+        if (dm != null) {
+            return dm.heightPixels;
+        }
+        return 0;
+    }
+
+    public static int getScreenWidth(Context context) {
+        DisplayMetrics dm = getDisplayMetrics(context);
+        if (dm != null) {
+            return dm.widthPixels;
+        }
+        return 0;
+    }
+
+    private static DisplayMetrics getDisplayMetrics(Context context) {
+        Display display = getDefaultDisplay(context);
+        if (display != null) {
+            DisplayMetrics result = new DisplayMetrics();
+            display.getMetrics(result);
+            return result;
+        }
+        return null;
+    }
+
+    public static int getStatusBarHeight(Context context) {
+        int result = 0;
+        int resourceId = context.getResources().getIdentifier("status_bar_height", "dimen", "android");
+        if (resourceId > 0) {
+            result = context.getResources().getDimensionPixelSize(resourceId);
+        }
+        return result;
+    }
+
+    public static int getToolbarHeight(Context context) {
+        TypedValue tv = new TypedValue();
+        if (context.getTheme().resolveAttribute(android.R.attr.actionBarSize, tv, true)) {
+            return TypedValue.complexToDimensionPixelSize(tv.data, context.getResources().getDisplayMetrics());
+        }
+        return 0;
+    }
+
+}

lib_media_selector/src/boxing-impl/java/com/bilibili/boxing_impl/adapter/BoxingAlbumAdapter.java

@@ -0,0 +1,158 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing_impl.adapter;
+
+import android.content.Context;
+import android.text.TextUtils;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import com.bilibili.boxing.BoxingMediaLoader;
+import com.bilibili.boxing.model.BoxingManager;
+import com.bilibili.boxing.model.entity.AlbumEntity;
+import com.bilibili.boxing.model.entity.impl.ImageMedia;
+import com.ztiany.mediaselector.R;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import androidx.recyclerview.widget.RecyclerView;
+
+
+/**
+ * Album window adapter.
+ *
+ * @author ChenSL
+ */
+public class BoxingAlbumAdapter extends RecyclerView.Adapter implements View.OnClickListener {
+    private static final String UNKNOW_ALBUM_NAME = "?";
+
+    private int mCurrentAlbumPos;
+
+    private List<AlbumEntity> mAlums;
+    private LayoutInflater mInflater;
+    private OnAlbumClickListener mAlbumOnClickListener;
+    private int mDefaultRes;
+
+    public BoxingAlbumAdapter(Context context) {
+        this.mAlums = new ArrayList<>();
+        this.mAlums.add(AlbumEntity.createDefaultAlbum());
+        this.mInflater = LayoutInflater.from(context);
+        this.mDefaultRes = BoxingManager.getInstance().getBoxingConfig().getAlbumPlaceHolderRes();
+    }
+
+    public void setAlbumOnClickListener(OnAlbumClickListener albumOnClickListener) {
+        this.mAlbumOnClickListener = albumOnClickListener;
+    }
+
+    @Override
+    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+        return new AlbumViewHolder(mInflater.inflate(R.layout.layout_boxing_album_item, parent, false));
+    }
+
+    @Override
+    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
+        final AlbumViewHolder albumViewHolder = (AlbumViewHolder) holder;
+        albumViewHolder.mCoverImg.setImageResource(mDefaultRes);
+        final int adapterPos = holder.getAdapterPosition();
+        final AlbumEntity album = mAlums.get(adapterPos);
+
+        if (album != null && album.hasImages()) {
+            String albumName = TextUtils.isEmpty(album.mBucketName) ?
+                    albumViewHolder.mNameTxt.getContext().getString(R.string.boxing_default_album_name) :album.mBucketName;
+            albumViewHolder.mNameTxt.setText(albumName);
+            ImageMedia media = (ImageMedia) album.mImageList.get(0);
+            if (media != null) {
+                BoxingMediaLoader.getInstance().displayThumbnail(albumViewHolder.mCoverImg, media.getPath(), 50, 50);
+                albumViewHolder.mCoverImg.setTag(R.string.boxing_app_name, media.getPath());
+            }
+            albumViewHolder.mLayout.setTag(adapterPos);
+            albumViewHolder.mLayout.setOnClickListener(this);
+            albumViewHolder.mCheckedImg.setVisibility(album.mIsSelected ? View.VISIBLE : View.GONE);
+            albumViewHolder.mSizeTxt.setText(albumViewHolder.mSizeTxt.
+                    getResources().getString(R.string.boxing_album_images_fmt, album.mCount));
+        } else {
+            albumViewHolder.mNameTxt.setText(UNKNOW_ALBUM_NAME);
+            albumViewHolder.mSizeTxt.setVisibility(View.GONE);
+        }
+    }
+
+    public void addAllData(List<AlbumEntity> alums) {
+        mAlums.clear();
+        mAlums.addAll(alums);
+        notifyDataSetChanged();
+    }
+
+    public List<AlbumEntity> getAlums() {
+        return mAlums;
+    }
+
+    public int getCurrentAlbumPos() {
+        return mCurrentAlbumPos;
+    }
+
+    public void setCurrentAlbumPos(int currentAlbumPos) {
+        mCurrentAlbumPos = currentAlbumPos;
+    }
+
+    public AlbumEntity getCurrentAlbum() {
+        if (mAlums == null || mAlums.size() <= 0) {
+            return null;
+        }
+        return mAlums.get(mCurrentAlbumPos);
+    }
+
+    @Override
+    public int getItemCount() {
+        return mAlums != null ? mAlums.size() : 0;
+    }
+
+    @Override
+    public void onClick(View v) {
+        int id = v.getId();
+        if (id == R.id.album_layout) {
+            if (mAlbumOnClickListener != null) {
+                mAlbumOnClickListener.onClick(v, (Integer) v.getTag());
+            }
+        }
+    }
+
+    private static class AlbumViewHolder extends RecyclerView.ViewHolder {
+        ImageView mCoverImg;
+        TextView mNameTxt;
+        TextView mSizeTxt;
+        View mLayout;
+        ImageView mCheckedImg;
+
+        AlbumViewHolder(final View itemView) {
+            super(itemView);
+            mCoverImg = (ImageView) itemView.findViewById(R.id.album_thumbnail);
+            mNameTxt = (TextView) itemView.findViewById(R.id.album_name);
+            mSizeTxt = (TextView) itemView.findViewById(R.id.album_size);
+            mLayout = itemView.findViewById(R.id.album_layout);
+            mCheckedImg = (ImageView) itemView.findViewById(R.id.album_checked);
+        }
+    }
+
+    public interface OnAlbumClickListener {
+        void onClick(View view, int pos);
+    }
+}

lib_media_selector/src/boxing-impl/java/com/bilibili/boxing_impl/adapter/BoxingMediaAdapter.java

@@ -0,0 +1,212 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing_impl.adapter;
+
+import android.content.Context;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ImageView;
+
+import com.bilibili.boxing.model.BoxingManager;
+import com.bilibili.boxing.model.config.BoxingConfig;
+import com.bilibili.boxing.model.entity.BaseMedia;
+import com.bilibili.boxing.model.entity.impl.ImageMedia;
+import com.bilibili.boxing_impl.BoxingResHelper;
+import com.bilibili.boxing_impl.view.MediaItemLayout;
+import com.ztiany.mediaselector.R;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.RecyclerView;
+
+
+/**
+ * A RecyclerView.Adapter for image or video picker showing.
+ *
+ * @author ChenSL
+ */
+public class BoxingMediaAdapter extends RecyclerView.Adapter {
+    private static final int CAMERA_TYPE = 0;
+    private static final int NORMAL_TYPE = 1;
+
+    private int mOffset;
+    private boolean mMultiImageMode;
+
+    private List<BaseMedia> mMedias;
+    private List<BaseMedia> mSelectedMedias;
+    private LayoutInflater mInflater;
+    private BoxingConfig mMediaConfig;
+    private View.OnClickListener mOnCameraClickListener;
+    private View.OnClickListener mOnMediaClickListener;
+    private OnCheckListener mOnCheckListener;
+    private OnMediaCheckedListener mOnCheckedListener;
+    private int mDefaultRes;
+
+    public BoxingMediaAdapter(Context context) {
+        this.mInflater = LayoutInflater.from(context);
+        this.mMedias = new ArrayList<>();
+        this.mSelectedMedias = new ArrayList<>(9);
+        this.mMediaConfig = BoxingManager.getInstance().getBoxingConfig();
+        this.mOffset = mMediaConfig.isNeedCamera() ? 1 : 0;
+        this.mMultiImageMode = mMediaConfig.getMode() == BoxingConfig.Mode.MULTI_IMG;
+        this.mOnCheckListener = new OnCheckListener();
+        this.mDefaultRes = mMediaConfig.getMediaPlaceHolderRes();
+    }
+
+    @Override
+    public int getItemViewType(int position) {
+        if (position == 0 && mMediaConfig.isNeedCamera()) {
+            return CAMERA_TYPE;
+        }
+        return NORMAL_TYPE;
+    }
+
+    @Override
+    public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
+        if (CAMERA_TYPE == viewType) {
+            return new CameraViewHolder(mInflater.inflate(R.layout.layout_boxing_recycleview_header, parent, false));
+        }
+        return new ImageViewHolder(mInflater.inflate(R.layout.layout_boxing_recycleview_item, parent, false));
+    }
+
+    @Override
+    public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) {
+        if (holder instanceof CameraViewHolder) {
+            CameraViewHolder viewHolder = (CameraViewHolder) holder;
+            viewHolder.mCameraLayout.setOnClickListener(mOnCameraClickListener);
+            viewHolder.mCameraImg.setImageResource(BoxingResHelper.getCameraRes());
+        } else {
+            int pos = position - mOffset;
+            final BaseMedia media = mMedias.get(pos);
+            final ImageViewHolder vh = (ImageViewHolder) holder;
+
+            vh.mItemLayout.setImageRes(mDefaultRes);
+            vh.mItemLayout.setTag(media);
+
+            vh.mItemLayout.setOnClickListener(mOnMediaClickListener);
+            vh.mItemLayout.setTag(R.id.media_item_check, pos);
+            vh.mItemLayout.setMedia(media);
+            vh.mItemChecked.setVisibility(mMultiImageMode ? View.VISIBLE : View.GONE);
+            if (mMultiImageMode && media instanceof ImageMedia) {
+                vh.mItemLayout.setChecked(((ImageMedia) media).isSelected());
+                vh.mItemChecked.setTag(R.id.media_layout, vh.mItemLayout);
+                vh.mItemChecked.setTag(media);
+                vh.mItemChecked.setOnClickListener(mOnCheckListener);
+            }
+        }
+    }
+
+    @Override
+    public long getItemId(int position) {
+        return position;
+    }
+
+    @Override
+    public int getItemCount() {
+        return mMedias.size() + mOffset;
+    }
+
+    public void setOnCameraClickListener(View.OnClickListener onCameraClickListener) {
+        mOnCameraClickListener = onCameraClickListener;
+    }
+
+    public void setOnCheckedListener(OnMediaCheckedListener onCheckedListener) {
+        mOnCheckedListener = onCheckedListener;
+    }
+
+    public void setOnMediaClickListener(View.OnClickListener onMediaClickListener) {
+        mOnMediaClickListener = onMediaClickListener;
+    }
+
+    public List<BaseMedia> getSelectedMedias() {
+        return mSelectedMedias;
+    }
+
+    public void setSelectedMedias(List<BaseMedia> selectedMedias) {
+        if (selectedMedias == null) {
+            return;
+        }
+        mSelectedMedias.clear();
+        mSelectedMedias.addAll(selectedMedias);
+        notifyDataSetChanged();
+    }
+
+    public void addAllData(@NonNull List<BaseMedia> data) {
+        int oldSize = mMedias.size();
+        this.mMedias.addAll(data);
+        int size = data.size();
+        notifyItemRangeInserted(oldSize, size);
+    }
+
+    public void clearData() {
+        int size = mMedias.size();
+        this.mMedias.clear();
+        notifyItemRangeRemoved(0, size);
+    }
+
+    public List<BaseMedia> getAllMedias() {
+        return mMedias;
+    }
+
+    private static class ImageViewHolder extends RecyclerView.ViewHolder {
+        MediaItemLayout mItemLayout;
+        View mItemChecked;
+
+        ImageViewHolder(View itemView) {
+            super(itemView);
+            mItemLayout = (MediaItemLayout) itemView.findViewById(R.id.media_layout);
+            mItemChecked = itemView.findViewById(R.id.media_item_check);
+        }
+    }
+
+    private static class CameraViewHolder extends RecyclerView.ViewHolder {
+        View mCameraLayout;
+        ImageView mCameraImg;
+
+        CameraViewHolder(final View itemView) {
+            super(itemView);
+            mCameraLayout = itemView.findViewById(R.id.camera_layout);
+            mCameraImg = (ImageView) itemView.findViewById(R.id.camera_img);
+        }
+    }
+
+    private class OnCheckListener implements View.OnClickListener {
+
+        @Override
+        public void onClick(View v) {
+            MediaItemLayout itemLayout = (MediaItemLayout) v.getTag(R.id.media_layout);
+            BaseMedia media = (BaseMedia) v.getTag();
+            if (mMediaConfig.getMode() == BoxingConfig.Mode.MULTI_IMG) {
+                if (mOnCheckedListener != null) {
+                    mOnCheckedListener.onChecked(itemLayout, media);
+                }
+            }
+        }
+    }
+
+    public interface OnMediaCheckedListener {
+        /**
+         * In multi image mode, selecting a {@link BaseMedia} or undo.
+         */
+        void onChecked(View v, BaseMedia iMedia);
+    }
+
+}

lib_media_selector/src/boxing-impl/java/com/bilibili/boxing_impl/ui/BoxingActivity.java

@@ -0,0 +1,93 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing_impl.ui;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.TextView;
+
+import com.bilibili.boxing.AbsBoxingActivity;
+import com.bilibili.boxing.AbsBoxingViewFragment;
+import com.bilibili.boxing.model.config.BoxingConfig;
+import com.bilibili.boxing.model.entity.BaseMedia;
+import com.ztiany.mediaselector.R;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.widget.Toolbar;
+
+/**
+ * Default UI Activity for simplest usage.
+ * A simple subclass of {@link AbsBoxingActivity}. Holding a {@link AbsBoxingViewFragment} to display medias.
+ */
+public class BoxingActivity extends AbsBoxingActivity {
+    private BoxingViewFragment mPickerFragment;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_boxing);
+        createToolbar();
+        setTitleTxt(getBoxingConfig());
+    }
+
+    @NonNull
+    @Override
+    public AbsBoxingViewFragment onCreateBoxingView(ArrayList<BaseMedia> medias) {
+        mPickerFragment = (BoxingViewFragment) getSupportFragmentManager().findFragmentByTag(BoxingViewFragment.TAG);
+        if (mPickerFragment == null) {
+            mPickerFragment = (BoxingViewFragment) BoxingViewFragment.newInstance().setSelectedBundle(medias);
+            getSupportFragmentManager().beginTransaction().replace(R.id.content_layout, mPickerFragment, BoxingViewFragment.TAG).commit();
+        }
+        return mPickerFragment;
+    }
+
+    private void createToolbar() {
+        Toolbar bar = (Toolbar) findViewById(R.id.nav_top_bar);
+        setSupportActionBar(bar);
+        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+        getSupportActionBar().setDisplayShowTitleEnabled(false);
+        bar.setNavigationOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                onBackPressed();
+            }
+        });
+    }
+
+    private void setTitleTxt(BoxingConfig config) {
+        TextView titleTxt = (TextView) findViewById(R.id.pick_album_txt);
+        if (config.getMode() == BoxingConfig.Mode.VIDEO) {
+            titleTxt.setText(R.string.boxing_video_title);
+            titleTxt.setCompoundDrawables(null, null, null, null);
+            return;
+        }
+        mPickerFragment.setTitleTxt(titleTxt);
+    }
+
+    @Override
+    public void onBoxingFinish(Intent intent, @Nullable List<BaseMedia> medias) {
+        setResult(Activity.RESULT_OK, intent);
+        finish();
+    }
+}

lib_media_selector/src/boxing-impl/java/com/bilibili/boxing_impl/ui/BoxingBaseFragment.java

@@ -0,0 +1,36 @@
+package com.bilibili.boxing_impl.ui;
+
+import android.os.Bundle;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+
+/**
+ * Created by ChenSL on 2017/4/5.
+ */
+
+public class BoxingBaseFragment extends Fragment {
+    private boolean mNeedPendingUserVisibileHint;
+    private boolean mLastUserVisibileHint;
+
+    @Override
+    public void onActivityCreated(@Nullable Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+        if (mNeedPendingUserVisibileHint) {
+            setUserVisibleCompat(mLastUserVisibileHint);
+        }
+    }
+
+    @Override
+    public void setUserVisibleHint(boolean isVisibleToUser) {
+        super.setUserVisibleHint(isVisibleToUser);
+        if (getActivity() == null) {
+            mNeedPendingUserVisibileHint = true;
+            mLastUserVisibileHint = isVisibleToUser;
+        } else {
+            setUserVisibleCompat(isVisibleToUser);
+        }
+    }
+
+    void setUserVisibleCompat(boolean userVisibleCompat) {
+    }
+}

lib_media_selector/src/boxing-impl/java/com/bilibili/boxing_impl/ui/BoxingBottomSheetActivity.java

@@ -0,0 +1,142 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing_impl.ui;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.View;
+import android.widget.FrameLayout;
+import android.widget.ImageView;
+
+import com.bilibili.boxing.AbsBoxingActivity;
+import com.bilibili.boxing.AbsBoxingViewFragment;
+import com.bilibili.boxing.BoxingMediaLoader;
+import com.bilibili.boxing.model.entity.BaseMedia;
+import com.bilibili.boxing.model.entity.impl.ImageMedia;
+import com.google.android.material.bottomsheet.BottomSheetBehavior;
+import com.ztiany.mediaselector.R;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.widget.Toolbar;
+
+/**
+ * Default UI Activity for simplest usage, containing layout achieve {@link BottomSheetBehavior}.
+ * Only support SINGLE_IMG and VIDEO Mode.
+ *
+ * @author ChenSL
+ */
+public class BoxingBottomSheetActivity extends AbsBoxingActivity implements View.OnClickListener {
+    private BottomSheetBehavior<FrameLayout> mBehavior;
+    private ImageView mImage;
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_boxing_bottom_sheet);
+        createToolbar();
+
+        FrameLayout bottomSheet = (FrameLayout) findViewById(R.id.content_layout);
+        mBehavior = BottomSheetBehavior.from(bottomSheet);
+        mBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
+
+        mImage = (ImageView) findViewById(R.id.media_result);
+        mImage.setOnClickListener(this);
+    }
+
+    @NonNull
+    @Override
+    public AbsBoxingViewFragment onCreateBoxingView(ArrayList<BaseMedia> medias) {
+        BoxingBottomSheetFragment fragment = (BoxingBottomSheetFragment) getSupportFragmentManager().findFragmentByTag(BoxingBottomSheetFragment.TAG);
+        if (fragment == null) {
+            fragment = BoxingBottomSheetFragment.newInstance();
+            getSupportFragmentManager().beginTransaction()
+                    .add(R.id.content_layout, fragment, BoxingBottomSheetFragment.TAG).commit();
+        }
+        return fragment;
+    }
+
+    private void createToolbar() {
+        Toolbar bar = (Toolbar) findViewById(R.id.nav_top_bar);
+        setSupportActionBar(bar);
+        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+        getSupportActionBar().setTitle(R.string.boxing_default_album);
+        bar.setNavigationOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                onBackPressed();
+            }
+        });
+    }
+
+    private boolean hideBottomSheet() {
+        if (mBehavior != null && mBehavior.getState() != BottomSheetBehavior.STATE_HIDDEN) {
+            mBehavior.setState(BottomSheetBehavior.STATE_HIDDEN);
+            return true;
+        }
+        return false;
+    }
+
+    private boolean collapseBottomSheet() {
+        if (mBehavior != null && mBehavior.getState() != BottomSheetBehavior.STATE_COLLAPSED) {
+            mBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
+            return true;
+        }
+        return false;
+    }
+
+    private void toggleBottomSheet() {
+        if (mBehavior == null) {
+            return;
+        }
+        if (mBehavior.getState() == BottomSheetBehavior.STATE_HIDDEN) {
+            mBehavior.setState(BottomSheetBehavior.STATE_COLLAPSED);
+        } else {
+            mBehavior.setState(BottomSheetBehavior.STATE_HIDDEN);
+        }
+    }
+
+    @Override
+    public void onBackPressed() {
+        if (hideBottomSheet()) {
+            return;
+        }
+        super.onBackPressed();
+    }
+
+    @Override
+    public void onClick(View v) {
+        int id = v.getId();
+        if (id == R.id.media_result) {
+            toggleBottomSheet();
+        }
+    }
+
+
+    @Override
+    public void onBoxingFinish(Intent intent, @Nullable List<BaseMedia> medias) {
+        if (mImage != null && medias != null && !medias.isEmpty()) {
+            ImageMedia imageMedia = (ImageMedia) medias.get(0);
+            BoxingMediaLoader.getInstance().displayRaw(mImage, imageMedia.getPath(), 1080, 720, null);
+        }
+        hideBottomSheet();
+    }
+}

lib_media_selector/src/boxing-impl/java/com/bilibili/boxing_impl/ui/BoxingBottomSheetFragment.java

@@ -0,0 +1,249 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing_impl.ui;
+
+import android.Manifest;
+import android.app.ProgressDialog;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ProgressBar;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import com.bilibili.boxing.AbsBoxingViewFragment;
+import com.bilibili.boxing.model.BoxingManager;
+import com.bilibili.boxing.model.entity.BaseMedia;
+import com.bilibili.boxing.presenter.PickerContract;
+import com.bilibili.boxing.utils.BoxingFileHelper;
+import com.bilibili.boxing_impl.adapter.BoxingMediaAdapter;
+import com.bilibili.boxing_impl.view.HackyGridLayoutManager;
+import com.bilibili.boxing_impl.view.SpacesItemDecoration;
+import com.ztiany.mediaselector.R;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.recyclerview.widget.GridLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+/**
+ * the most easy to implement {@link PickerContract.View} to show medias with google's Bottom Sheet </br>
+ * for simplest purpose, it only support SINGLE_IMG and VIDEO Mode.
+ * for MULTI_IMG mode, use {@link BoxingViewFragment} instead.
+ *
+ * @author ChenSL
+ */
+public class BoxingBottomSheetFragment extends AbsBoxingViewFragment implements View.OnClickListener {
+    public static final String TAG = "com.bilibili.boxing_impl.ui.BoxingBottomSheetFragment";
+
+    private static final int GRID_COUNT = 3;
+
+    private boolean mIsCamera;
+
+    private BoxingMediaAdapter mMediaAdapter;
+    private ProgressDialog mDialog;
+    private RecyclerView mRecycleView;
+    private TextView mEmptyTxt;
+    private ProgressBar mLoadingView;
+
+    public static BoxingBottomSheetFragment newInstance() {
+        return new BoxingBottomSheetFragment();
+    }
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        mMediaAdapter = new BoxingMediaAdapter(getActivity());
+    }
+
+    @Nullable
+    @Override
+    public View onCreateView(LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment_boxing_bottom_sheet, container, false);
+    }
+
+    @Override
+    public void onViewCreated(View view, Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        mEmptyTxt = (TextView) view.findViewById(R.id.empty_txt);
+        mRecycleView = (RecyclerView) view.findViewById(R.id.media_recycleview);
+        mRecycleView.setHasFixedSize(true);
+        mLoadingView = (ProgressBar) view.findViewById(R.id.loading);
+        GridLayoutManager gridLayoutManager = new HackyGridLayoutManager(getActivity(), GRID_COUNT);
+        gridLayoutManager.setSmoothScrollbarEnabled(true);
+        mRecycleView.setLayoutManager(gridLayoutManager);
+        mRecycleView.addItemDecoration(new SpacesItemDecoration(getResources().getDimensionPixelOffset(R.dimen.boxing_media_margin), GRID_COUNT));
+        mRecycleView.setAdapter(mMediaAdapter);
+        mRecycleView.addOnScrollListener(new ScrollListener());
+        mMediaAdapter.setOnMediaClickListener(new OnMediaClickListener());
+        mMediaAdapter.setOnCameraClickListener(new OnCameraClickListener());
+        view.findViewById(R.id.finish_txt).setOnClickListener(this);
+    }
+
+
+
+    @Override
+    public void onCameraActivityResult(int requestCode, int resultCode) {
+        showProgressDialog();
+        super.onCameraActivityResult(requestCode, resultCode);
+    }
+
+    private void showProgressDialog() {
+        if (mDialog == null) {
+            mDialog = new ProgressDialog(getActivity());
+            mDialog.setIndeterminate(true);
+            mDialog.setMessage(getString(R.string.boxing_handling));
+        }
+        if (!mDialog.isShowing()) {
+            mDialog.show();
+        }
+    }
+
+    private void dismissProgressDialog() {
+        if (mDialog != null && mDialog.isShowing()) {
+            mDialog.hide();
+            mDialog.dismiss();
+        }
+    }
+
+
+    @Override
+    public void showMedia(List<BaseMedia> medias, int count) {
+        if (medias == null || isEmptyData(medias)
+                && isEmptyData(mMediaAdapter.getAllMedias())) {
+            showEmptyData();
+            return;
+        }
+        showData();
+        mMediaAdapter.addAllData(medias);
+    }
+
+    private boolean isEmptyData(List<BaseMedia> medias) {
+        return medias.isEmpty() && !BoxingManager.getInstance().getBoxingConfig().isNeedCamera();
+    }
+
+    private void showEmptyData() {
+        mEmptyTxt.setVisibility(View.VISIBLE);
+        mRecycleView.setVisibility(View.GONE);
+        mLoadingView.setVisibility(View.GONE);
+    }
+
+    private void showData() {
+        mLoadingView.setVisibility(View.GONE);
+        mEmptyTxt.setVisibility(View.GONE);
+        mRecycleView.setVisibility(View.VISIBLE);
+    }
+
+    @Override
+    public void onCameraFinish(BaseMedia media) {
+        dismissProgressDialog();
+        mIsCamera = false;
+        if (media != null) {
+            List<BaseMedia> selectedMedias = mMediaAdapter.getSelectedMedias();
+            selectedMedias.add(media);
+            BoxingBottomSheetFragment.this.onFinish(selectedMedias);
+        }
+    }
+
+    @Override
+    public void onCameraError() {
+        mIsCamera = false;
+        dismissProgressDialog();
+    }
+
+    @Override
+    public void startLoading() {
+        loadMedias();
+    }
+
+    @Override
+    public void onRequestPermissionError(String[] permissions, Exception e) {
+        if (permissions.length > 0) {
+            if (permissions[0].equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
+                showEmptyData();
+                Toast.makeText(getContext(), R.string.boxing_storage_permission_deny, Toast.LENGTH_SHORT).show();
+            }
+        }
+    }
+
+    @Override
+    public void onRequestPermissionSuc(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+        if (permissions[0].equals(STORAGE_PERMISSIONS[0])) {
+            startLoading();
+        }
+    }
+
+
+    @Override
+    public void clearMedia() {
+        mMediaAdapter.clearData();
+    }
+
+
+    @Override
+    public void onClick(View v) {
+        int id = v.getId();
+        if (R.id.finish_txt == id) {
+            onFinish(null);
+        }
+    }
+
+
+    private class OnMediaClickListener implements View.OnClickListener {
+
+        @Override
+        public void onClick(View v) {
+            ArrayList<BaseMedia> iMedias = new ArrayList<>();
+            BaseMedia media = (BaseMedia) v.getTag();
+            iMedias.add(media);
+            onFinish(iMedias);
+        }
+    }
+
+    private class OnCameraClickListener implements View.OnClickListener {
+
+        @Override
+        public void onClick(View v) {
+            if (!mIsCamera) {
+                mIsCamera = true;
+                startCamera(getActivity(), BoxingBottomSheetFragment.this, BoxingFileHelper.DEFAULT_SUB_DIR);
+            }
+        }
+    }
+
+    private class ScrollListener extends RecyclerView.OnScrollListener {
+
+        @Override
+        public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
+            final int childCount = recyclerView.getChildCount();
+            if (childCount > 0) {
+                View lastChild = recyclerView.getChildAt(childCount - 1);
+                RecyclerView.Adapter outerAdapter = recyclerView.getAdapter();
+                int lastVisible = recyclerView.getChildAdapterPosition(lastChild);
+                if (lastVisible == outerAdapter.getItemCount() - 1 && hasNextPage() && canLoadNextPage()) {
+                    onLoadNextPage();
+                }
+            }
+        }
+    }
+
+}

lib_media_selector/src/boxing-impl/java/com/bilibili/boxing_impl/ui/BoxingRawImageFragment.java

@@ -0,0 +1,191 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing_impl.ui;
+
+import android.app.Activity;
+import android.graphics.Point;
+import android.graphics.drawable.Drawable;
+import android.os.Bundle;
+import android.util.DisplayMetrics;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.ProgressBar;
+
+import com.bilibili.boxing.AbsBoxingViewActivity;
+import com.bilibili.boxing.loader.IBoxingCallback;
+import com.bilibili.boxing.model.entity.impl.ImageMedia;
+import com.bilibili.boxing.utils.BoxingLog;
+import com.ztiany.mediaselector.R;
+
+import java.lang.ref.WeakReference;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import uk.co.senab.photoview.PhotoView;
+import uk.co.senab.photoview.PhotoViewAttacher;
+
+/**
+ * show raw image with the control of finger gesture.
+ *
+ * @author ChenSL
+ */
+public class BoxingRawImageFragment extends BoxingBaseFragment {
+    private static final String BUNDLE_IMAGE = "com.bilibili.boxing_impl.ui.BoxingRawImageFragment.image";
+    private static final int MAX_SCALE = 15;
+    private static final long MAX_IMAGE1 = 1024 * 1024L;
+    private static final long MAX_IMAGE2 = 4 * MAX_IMAGE1;
+
+    private PhotoView mImageView;
+    private ProgressBar mProgress;
+    private ImageMedia mMedia;
+    private PhotoViewAttacher mAttacher;
+
+    public static BoxingRawImageFragment newInstance(@NonNull ImageMedia image) {
+        BoxingRawImageFragment fragment = new BoxingRawImageFragment();
+        Bundle args = new Bundle();
+        args.putParcelable(BUNDLE_IMAGE, image);
+        fragment.setArguments(args);
+        return fragment;
+    }
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        mMedia = getArguments().getParcelable(BUNDLE_IMAGE);
+    }
+
+    @Nullable
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragment_boxing_raw_image, container, false);
+    }
+
+    @Override
+    public void onViewCreated(final View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        mProgress = (ProgressBar) view.findViewById(R.id.loading);
+        mImageView = (PhotoView) view.findViewById(R.id.photo_view);
+        mAttacher = new PhotoViewAttacher(mImageView);
+        mAttacher.setRotatable(true);
+        mAttacher.setToRightAngle(true);
+    }
+
+    @Override
+    void setUserVisibleCompat(boolean isVisibleToUser) {
+        if (isVisibleToUser) {
+            Point point = getResizePointer(mMedia.getSize());
+            ((AbsBoxingViewActivity) getActivity()).loadRawImage(mImageView, mMedia.getPath(), point.x, point.y, new BoxingCallback(this));
+        }
+    }
+
+    /**
+     * resize the image or not according to size.
+     *
+     * @param size the size of image
+     */
+    private Point getResizePointer(long size) {
+        DisplayMetrics metrics = getResources().getDisplayMetrics();
+        Point point = new Point(metrics.widthPixels, metrics.heightPixels);
+        if (size >= MAX_IMAGE2) {
+            point.x >>= 2;
+            point.y >>= 2;
+        } else if (size >= MAX_IMAGE1) {
+            point.x >>= 1;
+            point.y >>= 1;
+        } else if (size > 0) {
+            // avoid some images do not have a size.
+            point.x = 0;
+            point.y = 0;
+        }
+        return point;
+    }
+
+    private void dismissProgressDialog() {
+        if (mProgress != null) {
+            mProgress.setVisibility(View.GONE);
+        }
+        BoxingViewActivity activity = getThisActivity();
+        if (activity != null && activity.mProgressBar != null) {
+            activity.mProgressBar.setVisibility(View.GONE);
+        }
+    }
+
+    private BoxingViewActivity getThisActivity() {
+        Activity activity = getActivity();
+        if (activity instanceof BoxingViewActivity) {
+            return (BoxingViewActivity) activity;
+        }
+        return null;
+    }
+
+    @Override
+    public void onDestroyView() {
+        super.onDestroyView();
+        if (mAttacher != null) {
+            mAttacher.cleanup();
+            mAttacher = null;
+            mImageView = null;
+        }
+    }
+
+    private static class BoxingCallback implements IBoxingCallback {
+        private WeakReference<BoxingRawImageFragment> mWr;
+
+        BoxingCallback(BoxingRawImageFragment fragment) {
+            mWr = new WeakReference<>(fragment);
+        }
+
+        @Override
+        public void onSuccess() {
+            if (mWr.get() == null || mWr.get().mImageView == null) {
+                return;
+            }
+            mWr.get().dismissProgressDialog();
+            Drawable drawable = mWr.get().mImageView.getDrawable();
+            PhotoViewAttacher attacher = mWr.get().mAttacher;
+            if (attacher != null) {
+                if (drawable.getIntrinsicHeight() > (drawable.getIntrinsicWidth() << 2)) {
+                    // handle the super height image.
+                    int scale = drawable.getIntrinsicHeight() / drawable.getIntrinsicWidth();
+                    scale = Math.min(MAX_SCALE, scale);
+                    attacher.setMaximumScale(scale);
+                    attacher.setScale(scale, true);
+                }
+                attacher.update();
+            }
+            BoxingViewActivity activity = mWr.get().getThisActivity();
+            if (activity != null && activity.mGallery != null) {
+                activity.mGallery.setVisibility(View.VISIBLE);
+            }
+        }
+
+        @Override
+        public void onFail(Throwable t) {
+            if (mWr.get() == null) {
+                return;
+            }
+            BoxingLog.d(t != null ? t.getMessage() : "load raw image error.");
+            mWr.get().dismissProgressDialog();
+            mWr.get().mImageView.setImageResource(R.drawable.ic_boxing_broken_image);
+            if (mWr.get().mAttacher != null) {
+                mWr.get().mAttacher.update();
+            }
+        }
+    }
+}

lib_media_selector/src/boxing-impl/java/com/bilibili/boxing_impl/ui/BoxingViewActivity.java

@@ -0,0 +1,333 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing_impl.ui;
+
+import android.content.Intent;
+import android.os.Bundle;
+import android.view.Menu;
+import android.view.MenuItem;
+import android.view.View;
+import android.widget.Button;
+import android.widget.ProgressBar;
+import android.widget.Toast;
+
+import com.bilibili.boxing.AbsBoxingViewActivity;
+import com.bilibili.boxing.Boxing;
+import com.bilibili.boxing.model.BoxingManager;
+import com.bilibili.boxing.model.entity.BaseMedia;
+import com.bilibili.boxing.model.entity.impl.ImageMedia;
+import com.bilibili.boxing.model.task.IMediaTask;
+import com.bilibili.boxing_impl.BoxingResHelper;
+import com.bilibili.boxing_impl.view.HackyViewPager;
+import com.ztiany.mediaselector.R;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import androidx.annotation.Nullable;
+import androidx.appcompat.widget.Toolbar;
+import androidx.fragment.app.Fragment;
+import androidx.fragment.app.FragmentManager;
+import androidx.fragment.app.FragmentStatePagerAdapter;
+import androidx.viewpager.widget.ViewPager;
+
+/**
+ * An Activity to show raw image by holding {@link BoxingViewFragment}.
+ *
+ * @author ChenSL
+ */
+public class BoxingViewActivity extends AbsBoxingViewActivity {
+    public static final String EXTRA_TYPE_BACK = "com.bilibili.boxing_impl.ui.BoxingViewActivity.type_back";
+
+    HackyViewPager mGallery;
+    ProgressBar mProgressBar;
+
+    private boolean mNeedEdit;
+    private boolean mNeedLoading;
+    private boolean mFinishLoading;
+    private boolean mNeedAllCount = true;
+    private int mCurrentPage;
+    private int mTotalCount;
+    private int mStartPos;
+    private int mPos;
+    private int mMaxCount;
+
+    private String mAlbumId;
+    private Toolbar mToolbar;
+    private ImagesAdapter mAdapter;
+    private ImageMedia mCurrentImageItem;
+    private Button mOkBtn;
+    private ArrayList<BaseMedia> mImages;
+    private ArrayList<BaseMedia> mSelectedImages;
+    private MenuItem mSelectedMenuItem;
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        setContentView(R.layout.activity_boxing_view);
+        createToolbar();
+        initData();
+        initView();
+        startLoading();
+    }
+
+    private void createToolbar() {
+        mToolbar = (Toolbar) findViewById(R.id.nav_top_bar);
+        setSupportActionBar(mToolbar);
+        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+        mToolbar.setNavigationOnClickListener(new View.OnClickListener() {
+            @Override
+            public void onClick(View v) {
+                onBackPressed();
+            }
+        });
+        getSupportActionBar().setDisplayShowTitleEnabled(false);
+    }
+
+    private void initData() {
+        mSelectedImages = getSelectedImages();
+        mAlbumId = getAlbumId();
+        mStartPos = getStartPos();
+        mNeedLoading = BoxingManager.getInstance().getBoxingConfig().isNeedLoading();
+        mNeedEdit = BoxingManager.getInstance().getBoxingConfig().isNeedEdit();
+        mMaxCount = getMaxCount();
+        mImages = new ArrayList<>();
+        if (!mNeedLoading && mSelectedImages != null) {
+            mImages.addAll(mSelectedImages);
+        }
+    }
+
+    private void initView() {
+        mAdapter = new ImagesAdapter(getSupportFragmentManager());
+        mOkBtn = (Button) findViewById(R.id.image_items_ok);
+        mGallery = (HackyViewPager) findViewById(R.id.pager);
+        mProgressBar = (ProgressBar) findViewById(R.id.loading);
+        mGallery.setAdapter(mAdapter);
+        mGallery.addOnPageChangeListener(new OnPagerChangeListener());
+        if (!mNeedEdit) {
+            View chooseLayout = findViewById(R.id.item_choose_layout);
+            chooseLayout.setVisibility(View.GONE);
+        } else {
+            setOkTextNumber();
+            mOkBtn.setOnClickListener(new View.OnClickListener() {
+                @Override
+                public void onClick(View v) {
+                    finishByBackPressed(false);
+                }
+            });
+        }
+    }
+
+    private void setOkTextNumber() {
+        if (mNeedEdit) {
+            int selectedSize = mSelectedImages.size();
+            int size = Math.max(mSelectedImages.size(), mMaxCount);
+            mOkBtn.setText(getString(R.string.boxing_image_preview_ok_fmt, String.valueOf(selectedSize)
+                    , String.valueOf(size)));
+            mOkBtn.setEnabled(selectedSize > 0);
+        }
+    }
+
+    private void finishByBackPressed(boolean value) {
+        Intent intent = new Intent();
+        intent.putParcelableArrayListExtra(Boxing.EXTRA_SELECTED_MEDIA, mSelectedImages);
+        intent.putExtra(EXTRA_TYPE_BACK, value);
+        setResult(RESULT_OK, intent);
+        finish();
+    }
+
+    @Override
+    public boolean onCreateOptionsMenu(Menu menu) {
+        super.onCreateOptionsMenu(menu);
+        if (mNeedEdit) {
+            getMenuInflater().inflate(R.menu.activity_boxing_image_viewer, menu);
+            mSelectedMenuItem = menu.findItem(R.id.menu_image_item_selected);
+            if (mCurrentImageItem != null) {
+                setMenuIcon(mCurrentImageItem.isSelected());
+            } else {
+                setMenuIcon(false);
+            }
+            return true;
+        }
+        return false;
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        int id = item.getItemId();
+        if (id == R.id.menu_image_item_selected) {
+            if (mCurrentImageItem == null) {
+                return false;
+            }
+            if (mSelectedImages.size() >= mMaxCount && !mCurrentImageItem.isSelected()) {
+                String warning = getString(R.string.boxing_max_image_over_fmt, mMaxCount);
+                Toast.makeText(this, warning, Toast.LENGTH_SHORT).show();
+                return true;
+            }
+            if (mCurrentImageItem.isSelected()) {
+                cancelImage();
+            } else {
+                if (!mSelectedImages.contains(mCurrentImageItem)) {
+                    if (mCurrentImageItem.isGifOverSize()) {
+                        Toast.makeText(getApplicationContext(), R.string.boxing_gif_too_big, Toast.LENGTH_SHORT).show();
+                        return true;
+                    }
+                    mCurrentImageItem.setSelected(true);
+                    mSelectedImages.add(mCurrentImageItem);
+                }
+            }
+            setOkTextNumber();
+            setMenuIcon(mCurrentImageItem.isSelected());
+            return true;
+        }
+
+        return super.onOptionsItemSelected(item);
+    }
+
+    private void cancelImage() {
+        if (mSelectedImages.contains(mCurrentImageItem)) {
+            mSelectedImages.remove(mCurrentImageItem);
+        }
+        mCurrentImageItem.setSelected(false);
+    }
+
+
+    private void setMenuIcon(boolean isSelected) {
+        if (mNeedEdit) {
+            mSelectedMenuItem.setIcon(isSelected ? BoxingResHelper.getMediaCheckedRes(): BoxingResHelper.getMediaUncheckedRes());
+        }
+    }
+
+    @Override
+    public void startLoading() {
+        if (!mNeedLoading) {
+            mCurrentImageItem = (ImageMedia) mSelectedImages.get(mStartPos);
+            mToolbar.setTitle(getString(R.string.boxing_image_preview_title_fmt, String.valueOf(mStartPos + 1)
+                    , String.valueOf(mSelectedImages.size())));
+            mProgressBar.setVisibility(View.GONE);
+            mGallery.setVisibility(View.VISIBLE);
+            mAdapter.setMedias(mImages);
+            if (mStartPos > 0 && mStartPos < mSelectedImages.size()) {
+                mGallery.setCurrentItem(mStartPos, false);
+            }
+        } else {
+            loadMedia(mAlbumId, mStartPos, mCurrentPage);
+            mAdapter.setMedias(mImages);
+        }
+    }
+
+    private void loadMedia(String albumId, int startPos, int page) {
+        this.mPos = startPos;
+        loadMedias(page, albumId);
+    }
+
+    @Override
+    public void showMedia(@Nullable List<BaseMedia> medias, int totalCount) {
+        if (medias == null || totalCount <= 0) {
+            return;
+        }
+        mImages.addAll(medias);
+        mAdapter.notifyDataSetChanged();
+        checkSelectedMedia(mImages, mSelectedImages);
+        setupGallery();
+
+        if (mToolbar != null && mNeedAllCount) {
+            mToolbar.setTitle(getString(R.string.boxing_image_preview_title_fmt,
+                    String.valueOf(++mPos), String.valueOf(totalCount)));
+            mNeedAllCount = false;
+        }
+        loadOtherPagesInAlbum(totalCount);
+    }
+
+    private void setupGallery() {
+        int startPos = mStartPos;
+        if (mGallery == null || startPos < 0) {
+            return;
+        }
+        if (startPos < mImages.size() && !mFinishLoading) {
+            mGallery.setCurrentItem(mStartPos, false);
+            mCurrentImageItem = (ImageMedia) mImages.get(startPos);
+            mProgressBar.setVisibility(View.GONE);
+            mGallery.setVisibility(View.VISIBLE);
+            mFinishLoading = true;
+            invalidateOptionsMenu();
+        } else if (startPos >= mImages.size()) {
+            mProgressBar.setVisibility(View.VISIBLE);
+            mGallery.setVisibility(View.GONE);
+        }
+    }
+
+    private void loadOtherPagesInAlbum(int totalCount) {
+        mTotalCount = totalCount;
+        if (mCurrentPage <= (mTotalCount / IMediaTask.PAGE_LIMIT)) {
+            mCurrentPage++;
+            loadMedia(mAlbumId, mStartPos, mCurrentPage);
+        }
+    }
+
+    @Override
+    protected void onSaveInstanceState(Bundle outState) {
+        if (mSelectedImages != null) {
+            outState.putParcelableArrayList(Boxing.EXTRA_SELECTED_MEDIA, mSelectedImages);
+        }
+        outState.putString(Boxing.EXTRA_ALBUM_ID, mAlbumId);
+        super.onSaveInstanceState(outState);
+    }
+
+
+    @Override
+    public void onBackPressed() {
+        finishByBackPressed(true);
+    }
+
+    private class ImagesAdapter extends FragmentStatePagerAdapter {
+        private ArrayList<BaseMedia> mMedias;
+
+        ImagesAdapter(FragmentManager fm) {
+            super(fm);
+        }
+
+        @Override
+        public Fragment getItem(int i) {
+            return BoxingRawImageFragment.newInstance((ImageMedia) mMedias.get(i));
+        }
+
+        @Override
+        public int getCount() {
+            return mMedias == null ? 0 : mMedias.size();
+        }
+
+        public void setMedias(ArrayList<BaseMedia> medias) {
+            this.mMedias = medias;
+            notifyDataSetChanged();
+        }
+    }
+
+    private class OnPagerChangeListener extends ViewPager.SimpleOnPageChangeListener {
+
+        @Override
+        public void onPageSelected(int position) {
+            if (mToolbar != null && position < mImages.size()) {
+                mToolbar.setTitle(getString(R.string.boxing_image_preview_title_fmt, String.valueOf(position + 1)
+                        , mNeedLoading ? String.valueOf(mTotalCount) : String.valueOf(mImages.size())));
+                mCurrentImageItem = (ImageMedia) mImages.get(position);
+                invalidateOptionsMenu();
+            }
+        }
+    }
+}

lib_media_selector/src/boxing-impl/java/com/bilibili/boxing_impl/ui/BoxingViewFragment.java

@@ -0,0 +1,526 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing_impl.ui;
+
+import android.Manifest;
+import android.app.Activity;
+import android.app.ProgressDialog;
+import android.content.Intent;
+import android.graphics.drawable.ColorDrawable;
+import android.os.Bundle;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.view.ViewGroup;
+import android.widget.Button;
+import android.widget.PopupWindow;
+import android.widget.ProgressBar;
+import android.widget.TextView;
+import android.widget.Toast;
+
+import com.bilibili.boxing.AbsBoxingViewFragment;
+import com.bilibili.boxing.Boxing;
+import com.bilibili.boxing.model.BoxingManager;
+import com.bilibili.boxing.model.config.BoxingConfig;
+import com.bilibili.boxing.model.entity.AlbumEntity;
+import com.bilibili.boxing.model.entity.BaseMedia;
+import com.bilibili.boxing.model.entity.impl.ImageMedia;
+import com.bilibili.boxing.utils.BoxingFileHelper;
+import com.bilibili.boxing_impl.WindowManagerHelper;
+import com.bilibili.boxing_impl.adapter.BoxingAlbumAdapter;
+import com.bilibili.boxing_impl.adapter.BoxingMediaAdapter;
+import com.bilibili.boxing_impl.view.HackyGridLayoutManager;
+import com.bilibili.boxing_impl.view.MediaItemLayout;
+import com.bilibili.boxing_impl.view.SpacesItemDecoration;
+import com.ztiany.mediaselector.R;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.core.content.ContextCompat;
+import androidx.recyclerview.widget.GridLayoutManager;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+/**
+ * A full implement for {@link com.bilibili.boxing.presenter.PickerContract.View} supporting all the mode
+ * in {@link BoxingConfig.Mode}.
+ * use this to pick the picture.
+ *
+ * @author ChenSL
+ */
+public class BoxingViewFragment extends AbsBoxingViewFragment implements View.OnClickListener {
+    public static final String TAG = "com.bilibili.boxing_impl.ui.BoxingViewFragment";
+    private static final int IMAGE_PREVIEW_REQUEST_CODE = 9086;
+    private static final int IMAGE_CROP_REQUEST_CODE = 9087;
+
+    private static final int GRID_COUNT = 3;
+
+    private boolean mIsPreview;
+    private boolean mIsCamera;
+
+    private Button mPreBtn;
+    private Button mOkBtn;
+    private RecyclerView mRecycleView;
+    private BoxingMediaAdapter mMediaAdapter;
+    private BoxingAlbumAdapter mAlbumWindowAdapter;
+    private ProgressDialog mDialog;
+    private TextView mEmptyTxt;
+    private TextView mTitleTxt;
+    private PopupWindow mAlbumPopWindow;
+    private ProgressBar mLoadingView;
+
+    private int mMaxCount;
+
+    public static BoxingViewFragment newInstance() {
+        return new BoxingViewFragment();
+    }
+
+    @Override
+    public void onCreateWithSelectedMedias(Bundle savedInstanceState, @Nullable List<BaseMedia> selectedMedias) {
+        mAlbumWindowAdapter = new BoxingAlbumAdapter(getContext());
+        mMediaAdapter = new BoxingMediaAdapter(getContext());
+        mMediaAdapter.setSelectedMedias(selectedMedias);
+        mMaxCount = getMaxCount();
+    }
+
+    @Override
+    public void startLoading() {
+        loadMedias();
+        loadAlbum();
+    }
+
+    @Override
+    public void onRequestPermissionError(String[] permissions, Exception e) {
+        if (permissions.length > 0) {
+            if (permissions[0].equals(Manifest.permission.WRITE_EXTERNAL_STORAGE)) {
+                Toast.makeText(getContext(), R.string.boxing_storage_permission_deny, Toast.LENGTH_SHORT).show();
+                showEmptyData();
+            } else if (permissions[0].equals(Manifest.permission.CAMERA)){
+                Toast.makeText(getContext(), R.string.boxing_camera_permission_deny, Toast.LENGTH_SHORT).show();
+            }
+        }
+    }
+
+    @Override
+    public void onRequestPermissionSuc(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+        if (permissions[0].equals(STORAGE_PERMISSIONS[0])) {
+            startLoading();
+        } else if (permissions[0].equals(CAMERA_PERMISSIONS[0])) {
+            startCamera(getActivity(), this, null);
+        }
+    }
+
+    @Nullable
+    @Override
+    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
+        return inflater.inflate(R.layout.fragmant_boxing_view, container, false);
+    }
+
+    @Override
+    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
+        initViews(view);
+        super.onViewCreated(view, savedInstanceState);
+    }
+
+    private void initViews(View view) {
+        mEmptyTxt = (TextView) view.findViewById(R.id.empty_txt);
+        mRecycleView = (RecyclerView) view.findViewById(R.id.media_recycleview);
+        mRecycleView.setHasFixedSize(true);
+        mLoadingView = (ProgressBar) view.findViewById(R.id.loading);
+        initRecycleView();
+
+        boolean isMultiImageMode = BoxingManager.getInstance().getBoxingConfig().isMultiImageMode();
+        View multiImageLayout = view.findViewById(R.id.multi_picker_layout);
+        multiImageLayout.setVisibility(isMultiImageMode ? View.VISIBLE : View.GONE);
+        if (isMultiImageMode) {
+            mPreBtn = (Button) view.findViewById(R.id.choose_preview_btn);
+            mOkBtn = (Button) view.findViewById(R.id.choose_ok_btn);
+
+            mPreBtn.setOnClickListener(this);
+            mOkBtn.setOnClickListener(this);
+            updateMultiPickerLayoutState(mMediaAdapter.getSelectedMedias());
+        }
+    }
+
+    private void initRecycleView() {
+        GridLayoutManager gridLayoutManager = new HackyGridLayoutManager(getActivity(), GRID_COUNT);
+        gridLayoutManager.setSmoothScrollbarEnabled(true);
+        mRecycleView.setLayoutManager(gridLayoutManager);
+        mRecycleView.addItemDecoration(new SpacesItemDecoration(getResources().getDimensionPixelOffset(R.dimen.boxing_media_margin), GRID_COUNT));
+        mMediaAdapter.setOnCameraClickListener(new OnCameraClickListener());
+        mMediaAdapter.setOnCheckedListener(new OnMediaCheckedListener());
+        mMediaAdapter.setOnMediaClickListener(new OnMediaClickListener());
+        mRecycleView.setAdapter(mMediaAdapter);
+        mRecycleView.addOnScrollListener(new ScrollListener());
+    }
+
+    @Override
+    public void showMedia(@Nullable List<BaseMedia> medias, int allCount) {
+        if (medias == null || isEmptyData(medias)
+                && isEmptyData(mMediaAdapter.getAllMedias())) {
+            showEmptyData();
+            return;
+        }
+        showData();
+        mMediaAdapter.addAllData(medias);
+        checkSelectedMedia(medias, mMediaAdapter.getSelectedMedias());
+    }
+
+    private boolean isEmptyData(List<BaseMedia> medias) {
+        return medias.isEmpty() && !BoxingManager.getInstance().getBoxingConfig().isNeedCamera();
+    }
+
+    private void showEmptyData() {
+        mLoadingView.setVisibility(View.GONE);
+        mEmptyTxt.setVisibility(View.VISIBLE);
+        mRecycleView.setVisibility(View.GONE);
+    }
+
+    private void showData() {
+        mLoadingView.setVisibility(View.GONE);
+        mEmptyTxt.setVisibility(View.GONE);
+        mRecycleView.setVisibility(View.VISIBLE);
+    }
+
+    @Override
+    public void showAlbum(@Nullable List<AlbumEntity> albums) {
+        if ((albums == null || albums.isEmpty())
+                && mTitleTxt != null) {
+            mTitleTxt.setCompoundDrawables(null, null, null, null);
+            mTitleTxt.setOnClickListener(null);
+            return;
+        }
+        mAlbumWindowAdapter.addAllData(albums);
+    }
+
+    public BoxingMediaAdapter getMediaAdapter() {
+        return mMediaAdapter;
+    }
+
+    @Override
+    public void clearMedia() {
+        mMediaAdapter.clearData();
+    }
+
+    private void updateMultiPickerLayoutState(List<BaseMedia> medias) {
+        updateOkBtnState(medias);
+        updatePreviewBtnState(medias);
+    }
+
+    private void updatePreviewBtnState(List<BaseMedia> medias) {
+        if (mPreBtn == null || medias == null) {
+            return;
+        }
+        boolean enabled = medias.size() > 0 && medias.size() <= mMaxCount;
+        mPreBtn.setEnabled(enabled);
+    }
+
+    private void updateOkBtnState(List<BaseMedia> medias) {
+        if (mOkBtn == null || medias == null) {
+            return;
+        }
+        boolean enabled = medias.size() > 0 && medias.size() <= mMaxCount;
+        mOkBtn.setEnabled(enabled);
+        mOkBtn.setText(enabled ? getString(R.string.boxing_image_select_ok_fmt, String.valueOf(medias.size())
+                , String.valueOf(mMaxCount)) : getString(R.string.boxing_ok));
+    }
+
+    @Override
+    public void onCameraFinish(BaseMedia media) {
+        dismissProgressDialog();
+        mIsCamera = false;
+        if (media == null) {
+            return;
+        }
+        if (hasCropBehavior()) {
+            startCrop(media, IMAGE_CROP_REQUEST_CODE);
+        } else if (mMediaAdapter != null && mMediaAdapter.getSelectedMedias() != null) {
+            List<BaseMedia> selectedMedias = mMediaAdapter.getSelectedMedias();
+            selectedMedias.add(media);
+            onFinish(selectedMedias);
+        }
+    }
+
+    @Override
+    public void onCameraError() {
+        mIsCamera = false;
+        dismissProgressDialog();
+    }
+
+    @Override
+    public void onClick(View v) {
+        int id = v.getId();
+        if (id == R.id.choose_ok_btn) {
+            onFinish(mMediaAdapter.getSelectedMedias());
+        } else if (id == R.id.choose_preview_btn) {
+            if (!mIsPreview) {
+                mIsPreview = true;
+                ArrayList<BaseMedia> medias = (ArrayList<BaseMedia>) mMediaAdapter.getSelectedMedias();
+                Boxing.get().withIntent(getActivity(), BoxingViewActivity.class, medias)
+                        .start(this, BoxingViewFragment.IMAGE_PREVIEW_REQUEST_CODE, BoxingConfig.ViewMode.PRE_EDIT);
+
+            }
+        }
+
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        if (data == null) {
+            return;
+        }
+        if (resultCode == Activity.RESULT_OK && requestCode == IMAGE_PREVIEW_REQUEST_CODE) {
+            mIsPreview = false;
+            boolean isBackClick = data.getBooleanExtra(BoxingViewActivity.EXTRA_TYPE_BACK, false);
+            List<BaseMedia> selectedMedias = data.getParcelableArrayListExtra(Boxing.EXTRA_SELECTED_MEDIA);
+            onViewActivityRequest(selectedMedias, mMediaAdapter.getAllMedias(), isBackClick);
+            if (isBackClick) {
+                mMediaAdapter.setSelectedMedias(selectedMedias);
+            }
+            updateMultiPickerLayoutState(selectedMedias);
+        }
+
+    }
+
+    private void onViewActivityRequest(List<BaseMedia> selectedMedias, List<BaseMedia> allMedias, boolean isBackClick) {
+        if (isBackClick) {
+            checkSelectedMedia(allMedias, selectedMedias);
+        } else {
+            onFinish(selectedMedias);
+        }
+    }
+
+
+    @Override
+    public void onCameraActivityResult(int requestCode, int resultCode) {
+        showProgressDialog();
+        super.onCameraActivityResult(requestCode, resultCode);
+    }
+
+    private void showProgressDialog() {
+        if (mDialog == null) {
+            mDialog = new ProgressDialog(getActivity());
+            mDialog.setIndeterminate(true);
+            mDialog.setMessage(getString(R.string.boxing_handling));
+        }
+       if (!mDialog.isShowing()) {
+           mDialog.show();
+       }
+    }
+
+    private void dismissProgressDialog() {
+        if (mDialog != null && mDialog.isShowing()) {
+            mDialog.hide();
+            mDialog.dismiss();
+        }
+    }
+
+    @Override
+    public void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+
+        ArrayList<BaseMedia> medias = (ArrayList<BaseMedia>) getMediaAdapter().getSelectedMedias();
+        onSaveMedias(outState, medias);
+    }
+
+    public void setTitleTxt(TextView titleTxt) {
+        mTitleTxt = titleTxt;
+        mTitleTxt.setOnClickListener(new View.OnClickListener() {
+
+            @Override
+            public void onClick(View v) {
+                if (mAlbumPopWindow == null) {
+                    int height = WindowManagerHelper.getScreenHeight(v.getContext()) -
+                            (WindowManagerHelper.getToolbarHeight(v.getContext())
+                                    + WindowManagerHelper.getStatusBarHeight(v.getContext()));
+                    View windowView = createWindowView();
+                    mAlbumPopWindow = new PopupWindow(windowView, ViewGroup.LayoutParams.MATCH_PARENT,
+                            height, true);
+                    mAlbumPopWindow.setAnimationStyle(R.style.Boxing_PopupAnimation);
+                    mAlbumPopWindow.setOutsideTouchable(true);
+                    mAlbumPopWindow.setBackgroundDrawable(new ColorDrawable
+                            (ContextCompat.getColor(v.getContext(), R.color.boxing_colorPrimaryAlpha)));
+                    mAlbumPopWindow.setContentView(windowView);
+                }
+                mAlbumPopWindow.showAsDropDown(v, 0, 0);
+            }
+
+            @NonNull
+            private View createWindowView() {
+                View view = LayoutInflater.from(getActivity()).inflate(R.layout.layout_boxing_album, null);
+                RecyclerView recyclerView = (RecyclerView) view.findViewById(R.id.album_recycleview);
+                recyclerView.setLayoutManager(new LinearLayoutManager(view.getContext(), LinearLayoutManager.VERTICAL, false));
+                recyclerView.addItemDecoration(new SpacesItemDecoration(2, 1));
+
+                View albumShadowLayout = view.findViewById(R.id.album_shadow);
+                albumShadowLayout.setOnClickListener(new View.OnClickListener() {
+                    @Override
+                    public void onClick(View v) {
+                        dismissAlbumWindow();
+                    }
+                });
+                mAlbumWindowAdapter.setAlbumOnClickListener(new OnAlbumItemOnClickListener());
+                recyclerView.setAdapter(mAlbumWindowAdapter);
+                return view;
+            }
+        });
+    }
+
+    private void dismissAlbumWindow() {
+        if (mAlbumPopWindow != null && mAlbumPopWindow.isShowing()) {
+            mAlbumPopWindow.dismiss();
+        }
+    }
+
+    private class ScrollListener extends RecyclerView.OnScrollListener {
+
+        @Override
+        public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
+            final int childCount = recyclerView.getChildCount();
+            if (childCount > 0) {
+                View lastChild = recyclerView.getChildAt(childCount - 1);
+                RecyclerView.Adapter outerAdapter = recyclerView.getAdapter();
+                int lastVisible = recyclerView.getChildAdapterPosition(lastChild);
+                if (lastVisible == outerAdapter.getItemCount() - 1 && hasNextPage() && canLoadNextPage()) {
+                    onLoadNextPage();
+                }
+            }
+        }
+    }
+
+    private class OnMediaClickListener implements View.OnClickListener {
+
+        @Override
+        public void onClick(View v) {
+            BaseMedia media = (BaseMedia) v.getTag();
+            int pos = (int) v.getTag(R.id.media_item_check);
+            BoxingConfig.Mode mode = BoxingManager.getInstance().getBoxingConfig().getMode();
+            if (mode == BoxingConfig.Mode.SINGLE_IMG) {
+                singleImageClick(media);
+            } else if (mode == BoxingConfig.Mode.MULTI_IMG) {
+                multiImageClick(pos);
+            } else if (mode == BoxingConfig.Mode.VIDEO) {
+                videoClick(media);
+            }
+        }
+
+        private void videoClick(BaseMedia media) {
+            ArrayList<BaseMedia> iMedias = new ArrayList<>();
+            iMedias.add(media);
+            onFinish(iMedias);
+        }
+
+        private void multiImageClick(int pos) {
+            if (!mIsPreview) {
+                AlbumEntity albumMedia = mAlbumWindowAdapter.getCurrentAlbum();
+                String albumId = albumMedia != null ? albumMedia.mBucketId : AlbumEntity.DEFAULT_NAME;
+                mIsPreview = true;
+
+                ArrayList<BaseMedia> medias = (ArrayList<BaseMedia>) mMediaAdapter.getSelectedMedias();
+
+                Boxing.get().withIntent(getContext(), BoxingViewActivity.class, medias, pos, albumId)
+                        .start(BoxingViewFragment.this, BoxingViewFragment.IMAGE_PREVIEW_REQUEST_CODE, BoxingConfig.ViewMode.EDIT);
+
+            }
+        }
+
+        private void singleImageClick(BaseMedia media) {
+            ArrayList<BaseMedia> iMedias = new ArrayList<>();
+            iMedias.add(media);
+            if (hasCropBehavior()) {
+                startCrop(media, IMAGE_CROP_REQUEST_CODE);
+            } else {
+                onFinish(iMedias);
+            }
+        }
+    }
+
+
+    private class OnCameraClickListener implements View.OnClickListener {
+
+        @Override
+        public void onClick(View v) {
+            if (!mIsCamera) {
+                mIsCamera = true;
+                startCamera(getActivity(), BoxingViewFragment.this, BoxingFileHelper.DEFAULT_SUB_DIR);
+            }
+        }
+    }
+
+    private class OnMediaCheckedListener implements BoxingMediaAdapter.OnMediaCheckedListener {
+
+        @Override
+        public void onChecked(View view, BaseMedia iMedia) {
+            if (!(iMedia instanceof ImageMedia)) {
+                return;
+            }
+            ImageMedia photoMedia = (ImageMedia) iMedia;
+            boolean isSelected = !photoMedia.isSelected();
+            MediaItemLayout layout = (MediaItemLayout) view;
+            List<BaseMedia> selectedMedias = mMediaAdapter.getSelectedMedias();
+            if (isSelected) {
+                if (selectedMedias.size() >= mMaxCount) {
+                    String warning = getString(R.string.boxing_too_many_picture_fmt, mMaxCount);
+                    Toast.makeText(getActivity(), warning, Toast.LENGTH_SHORT).show();
+                    return;
+                }
+                if (!selectedMedias.contains(photoMedia)) {
+                    if (photoMedia.isGifOverSize()) {
+                        Toast.makeText(getActivity(), R.string.boxing_gif_too_big, Toast.LENGTH_SHORT).show();
+                        return;
+                    }
+                    selectedMedias.add(photoMedia);
+                }
+            } else {
+                if (selectedMedias.size() >= 1 && selectedMedias.contains(photoMedia)) {
+                    selectedMedias.remove(photoMedia);
+                }
+            }
+            photoMedia.setSelected(isSelected);
+            layout.setChecked(isSelected);
+            updateMultiPickerLayoutState(selectedMedias);
+        }
+    }
+
+    private class OnAlbumItemOnClickListener implements BoxingAlbumAdapter.OnAlbumClickListener {
+
+        @Override
+        public void onClick(View view, int pos) {
+            BoxingAlbumAdapter adapter = mAlbumWindowAdapter;
+            if (adapter != null && adapter.getCurrentAlbumPos() != pos) {
+                List<AlbumEntity> albums = adapter.getAlums();
+                adapter.setCurrentAlbumPos(pos);
+
+                AlbumEntity albumMedia = albums.get(pos);
+                loadMedias(0, albumMedia.mBucketId);
+                mTitleTxt.setText(albumMedia.mBucketName == null ? getString(R.string.boxing_default_album_name) : albumMedia.mBucketName);
+
+                for (AlbumEntity album : albums) {
+                    album.mIsSelected = false;
+                }
+                albumMedia.mIsSelected = true;
+                adapter.notifyDataSetChanged();
+            }
+            dismissAlbumWindow();
+        }
+    }
+
+}

lib_media_selector/src/boxing-impl/java/com/bilibili/boxing_impl/view/HackyGridLayoutManager.java

@@ -0,0 +1,34 @@
+package com.bilibili.boxing_impl.view;
+
+import android.content.Context;
+import android.util.AttributeSet;
+
+import androidx.recyclerview.widget.GridLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+
+/**
+ * Created by ChenSL on 2018/3/22.
+ */
+
+public class HackyGridLayoutManager extends GridLayoutManager {
+    public HackyGridLayoutManager(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
+        super(context, attrs, defStyleAttr, defStyleRes);
+    }
+
+    public HackyGridLayoutManager(Context context, int spanCount) {
+        super(context, spanCount);
+    }
+
+    public HackyGridLayoutManager(Context context, int spanCount, int orientation, boolean reverseLayout) {
+        super(context, spanCount, orientation, reverseLayout);
+    }
+
+    @Override
+    public void onLayoutChildren(RecyclerView.Recycler recycler, RecyclerView.State state) {
+        try {
+            super.onLayoutChildren(recycler, state);
+        } catch (IndexOutOfBoundsException e) {
+            e.printStackTrace();
+        }
+    }
+}

lib_media_selector/src/boxing-impl/java/com/bilibili/boxing_impl/view/HackyViewPager.java

@@ -0,0 +1,67 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing_impl.view;
+
+import android.content.Context;
+import android.util.AttributeSet;
+import android.view.MotionEvent;
+
+import androidx.viewpager.widget.ViewPager;
+
+/**
+ * https://github.com/chrisbanes/PhotoView/issues/35
+ */
+public class HackyViewPager extends ViewPager {
+    private boolean mIsLocked;
+
+    public HackyViewPager(Context context) {
+        super(context);
+        mIsLocked = false;
+    }
+
+    public HackyViewPager(Context context, AttributeSet attrs) {
+        super(context, attrs);
+        mIsLocked = false;
+    }
+
+    @Override
+    public boolean onInterceptTouchEvent(MotionEvent ev) {
+        if (!mIsLocked) {
+            try {
+                return super.onInterceptTouchEvent(ev);
+            } catch (IllegalArgumentException e) {
+                return false;
+            }
+        }
+        return false;
+    }
+
+    @Override
+    public boolean onTouchEvent(MotionEvent event) {
+        return !mIsLocked && super.onTouchEvent(event);
+    }
+
+    public boolean isLocked() {
+        return mIsLocked;
+    }
+
+    public void setLocked(boolean isLocked) {
+        this.mIsLocked = isLocked;
+    }
+
+}

lib_media_selector/src/boxing-impl/java/com/bilibili/boxing_impl/view/MediaItemLayout.java

@@ -0,0 +1,162 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing_impl.view;
+
+import android.content.Context;
+import android.content.res.Configuration;
+import android.text.TextUtils;
+import android.util.AttributeSet;
+import android.view.LayoutInflater;
+import android.view.View;
+import android.widget.FrameLayout;
+import android.widget.ImageView;
+import android.widget.TextView;
+
+import com.bilibili.boxing.BoxingMediaLoader;
+import com.bilibili.boxing.model.BoxingManager;
+import com.bilibili.boxing.model.entity.BaseMedia;
+import com.bilibili.boxing.model.entity.impl.ImageMedia;
+import com.bilibili.boxing.model.entity.impl.VideoMedia;
+import com.bilibili.boxing_impl.BoxingResHelper;
+import com.bilibili.boxing_impl.WindowManagerHelper;
+import com.ztiany.mediaselector.R;
+
+import androidx.annotation.DrawableRes;
+import androidx.annotation.NonNull;
+
+
+/**
+ * A media layout for {@link androidx.recyclerview.widget.RecyclerView} item, including image and video <br/>
+ *
+ * @author ChenSL
+ */
+public class MediaItemLayout extends FrameLayout {
+    private static final int BIG_IMG_SIZE = 5 * 1024 * 1024;
+
+    private ImageView mCheckImg;
+    private View mVideoLayout;
+    private View mFontLayout;
+    private ImageView mCoverImg;
+    private ScreenType mScreenType;
+
+    private enum ScreenType {
+        SMALL(100), NORMAL(180), LARGE(320);
+        int value;
+
+        ScreenType(int value) {
+            this.value = value;
+        }
+
+        public int getValue() {
+            return value;
+        }
+    }
+
+    public MediaItemLayout(Context context) {
+        this(context, null, 0);
+    }
+
+    public MediaItemLayout(Context context, AttributeSet attrs) {
+        this(context, attrs, 0);
+    }
+
+    public MediaItemLayout(Context context, AttributeSet attrs, int defStyleAttr) {
+        super(context, attrs, defStyleAttr);
+        View view = LayoutInflater.from(context).inflate(R.layout.layout_boxing_media_item, this, true);
+        mCoverImg = (ImageView) view.findViewById(R.id.media_item);
+        mCheckImg = (ImageView) view.findViewById(R.id.media_item_check);
+        mVideoLayout = view.findViewById(R.id.video_layout);
+        mFontLayout = view.findViewById(R.id.media_font_layout);
+        mScreenType = getScreenType(context);
+        setImageRect(context);
+    }
+
+    private void setImageRect(Context context) {
+        int screenHeight = WindowManagerHelper.getScreenHeight(context);
+        int screenWidth = WindowManagerHelper.getScreenWidth(context);
+        int width = 100;
+        if (screenHeight != 0 && screenWidth != 0) {
+            width = (screenWidth - getResources().getDimensionPixelOffset(R.dimen.boxing_media_margin) * 4) / 3;
+        }
+        mCoverImg.getLayoutParams().width = width;
+        mCoverImg.getLayoutParams().height = width;
+        mFontLayout.getLayoutParams().width = width;
+        mFontLayout.getLayoutParams().height = width;
+    }
+
+    private ScreenType getScreenType(Context context) {
+        int type = context.getResources().getConfiguration().screenLayout & Configuration.SCREENLAYOUT_SIZE_MASK;
+        ScreenType result;
+        switch (type) {
+            case Configuration.SCREENLAYOUT_SIZE_SMALL:
+                result = ScreenType.SMALL;
+                break;
+            case Configuration.SCREENLAYOUT_SIZE_NORMAL:
+                result = ScreenType.NORMAL;
+                break;
+            case Configuration.SCREENLAYOUT_SIZE_LARGE:
+                result = ScreenType.LARGE;
+                break;
+            default:
+                result = ScreenType.NORMAL;
+                break;
+        }
+        return result;
+    }
+
+    public void setImageRes(@DrawableRes int imageRes) {
+        if (mCoverImg != null) {
+            mCoverImg.setImageResource(imageRes);
+        }
+    }
+
+    public void setMedia(BaseMedia media) {
+        if (media instanceof ImageMedia) {
+            mVideoLayout.setVisibility(GONE);
+            setCover(((ImageMedia) media).getThumbnailPath());
+        } else if (media instanceof VideoMedia) {
+            mVideoLayout.setVisibility(VISIBLE);
+            VideoMedia videoMedia = (VideoMedia) media;
+            TextView durationTxt = ((TextView) mVideoLayout.findViewById(R.id.video_duration_txt));
+            durationTxt.setText(videoMedia.getDuration());
+            durationTxt.setCompoundDrawablesWithIntrinsicBounds(BoxingManager.getInstance().getBoxingConfig().getVideoDurationRes(), 0, 0, 0);
+            ((TextView) mVideoLayout.findViewById(R.id.video_size_txt)).setText(videoMedia.getSizeByUnit());
+            setCover(videoMedia.getPath());
+        }
+    }
+
+    private void setCover(@NonNull String path) {
+        if (mCoverImg == null || TextUtils.isEmpty(path)) {
+            return;
+        }
+        mCoverImg.setTag(R.string.boxing_app_name, path);
+        BoxingMediaLoader.getInstance().displayThumbnail(mCoverImg, path, mScreenType.getValue(), mScreenType.getValue());
+    }
+
+    @SuppressWarnings("deprecation")
+    public void setChecked(boolean isChecked) {
+        if (isChecked) {
+            mFontLayout.setVisibility(View.VISIBLE);
+            mCheckImg.setImageDrawable(getResources().getDrawable(BoxingResHelper.getMediaCheckedRes()));
+        } else {
+            mFontLayout.setVisibility(View.GONE);
+            mCheckImg.setImageDrawable(getResources().getDrawable(BoxingResHelper.getMediaUncheckedRes()));
+        }
+    }
+
+}

lib_media_selector/src/boxing-impl/java/com/bilibili/boxing_impl/view/SpacesItemDecoration.java

@@ -0,0 +1,103 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing_impl.view;
+
+import android.graphics.Rect;
+import android.view.View;
+
+import androidx.recyclerview.widget.GridLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
+import androidx.recyclerview.widget.StaggeredGridLayoutManager;
+
+/**
+ * @author ChenSL
+ */
+public class SpacesItemDecoration extends RecyclerView.ItemDecoration {
+    private int mSpace;
+    private int mSpanCount;
+    private int mRadixX;
+    private int mItemCountInLastLine;
+    private int mOldItemCount = -1;
+
+    public SpacesItemDecoration(int space) {
+        this(space, 1);
+    }
+
+    public SpacesItemDecoration(int space, int spanCount) {
+        this.mSpace = space;
+        this.mSpanCount = spanCount;
+        this.mRadixX = space / spanCount;
+    }
+
+    @Override
+    public void getItemOffsets(Rect outRect, View view, final RecyclerView parent, RecyclerView.State state) {
+        RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) view.getLayoutParams();
+        final int sumCount = state.getItemCount();
+        final int position = params.getViewLayoutPosition();
+        final int spanSize;
+        final int index;
+
+        if (params instanceof GridLayoutManager.LayoutParams) {
+            GridLayoutManager.LayoutParams gridParams = (GridLayoutManager.LayoutParams) params;
+            spanSize = gridParams.getSpanSize();
+            index = gridParams.getSpanIndex();
+
+            if ((position == 0 || mOldItemCount != sumCount) && mSpanCount > 1) {
+                int countInLine = 0;
+                int spanIndex;
+
+                for (int tempPosition = sumCount - mSpanCount; tempPosition < sumCount; tempPosition++) {
+                    spanIndex = ((GridLayoutManager) parent.getLayoutManager()).getSpanSizeLookup().getSpanIndex(tempPosition, mSpanCount);
+                    countInLine = spanIndex == 0 ? 1 : countInLine + 1;
+                }
+                mItemCountInLastLine = countInLine;
+                if (mOldItemCount != sumCount) {
+                    mOldItemCount = sumCount;
+                    if (position != 0) {
+                        parent.post(new Runnable() {
+                            @Override
+                            public void run() {
+                                parent.invalidateItemDecorations();
+                            }
+                        });
+                    }
+                }
+            }
+        } else if (params instanceof StaggeredGridLayoutManager.LayoutParams) {
+            spanSize = ((StaggeredGridLayoutManager.LayoutParams) params).isFullSpan() ? mSpanCount : 1;
+            index = ((StaggeredGridLayoutManager.LayoutParams) params).getSpanIndex();
+        } else {
+            spanSize = 1;
+            index = 0;
+        }
+
+        if (spanSize < 1 || index < 0 || spanSize > mSpanCount) {
+            return;
+        }
+
+        outRect.left = mSpace - mRadixX * index;
+        outRect.right = mRadixX + mRadixX * (index + spanSize - 1);
+
+        if (mSpanCount == 1 && position == sumCount - 1) {
+            outRect.bottom = mSpace;
+        } else if (position >= sumCount - mItemCountInLastLine && position < sumCount) {
+            outRect.bottom = mSpace;
+        }
+        outRect.top = mSpace;
+    }
+}

lib_media_selector/src/boxing-impl/res/anim/boxing_fade_in.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<set xmlns:android="http://schemas.android.com/apk/res/android" >
+
+    <alpha
+        android:duration="150"
+        android:fromAlpha="0.1"
+        android:interpolator="@android:anim/accelerate_decelerate_interpolator"
+        android:toAlpha="1.0" />
+
+</set>

lib_media_selector/src/boxing-impl/res/anim/boxing_fade_out.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<set xmlns:android="http://schemas.android.com/apk/res/android" >
+
+    <alpha
+        android:duration="150"
+        android:fromAlpha="1.0"
+        android:interpolator="@android:anim/accelerate_decelerate_interpolator"
+        android:toAlpha="0.0" />
+
+</set>

lib_media_selector/src/boxing-impl/res/drawable/selector_boxing_btn_solid.xml

@@ -0,0 +1,39 @@
+<?xml version="1.0" encoding="utf-8"?><!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+
+    <item android:state_enabled="true" android:state_pressed="true">
+        <shape>
+            <corners android:radius="@dimen/boxing_corner_radius" />
+            <solid android:color="@color/boxing_black" />
+        </shape>
+    </item>
+
+    <item android:state_enabled="true">
+        <shape>
+            <solid android:color="@color/boxing_black" />
+            <corners android:radius="@dimen/boxing_corner_radius" />
+        </shape>
+    </item>
+    <item android:state_enabled="false">
+        <shape>
+            <solid android:color="@color/boxing_gray" />
+            <corners android:radius="@dimen/boxing_corner_radius" />
+        </shape>
+    </item>
+</selector>

lib_media_selector/src/boxing-impl/res/drawable/shape_boxing_popup_background.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+
+    <corners
+        android:radius="@dimen/boxing_corner_radius" />
+    <solid
+        android:color="#fafafa" />
+
+</shape>

lib_media_selector/src/boxing-impl/res/drawable/shape_boxing_unchecked.xml

@@ -0,0 +1,33 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+       android:shape="oval">
+
+    <solid android:color="@color/boxing_colorPrimaryAlpha"/>
+
+    <stroke
+        android:width="0.3dp"
+        android:color="@color/boxing_white"/>
+
+    <size
+        android:width="18dp"
+        android:height="18dp"/>
+
+
+</shape>

lib_media_selector/src/boxing-impl/res/layout/activity_boxing.xml

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              xmlns:app="http://schemas.android.com/apk/res-auto"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent"
+              android:orientation="vertical">
+
+    <androidx.appcompat.widget.Toolbar
+        android:id="@+id/nav_top_bar"
+        android:layout_width="match_parent"
+        android:layout_height="?android:attr/actionBarSize"
+        android:elevation="2dp"
+        app:theme="@style/Boxing.ToolbarTheme">
+
+        <TextView
+            android:id="@+id/pick_album_txt"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:layout_centerInParent="true"
+            android:drawablePadding="8dp"
+            android:drawableRight="@drawable/abc_spinner_mtrl_am_alpha"
+            android:gravity="center_vertical"
+            android:paddingLeft="8dp"
+            android:paddingRight="8dp"
+            android:text="@string/boxing_default_album"/>
+    </androidx.appcompat.widget.Toolbar>
+
+    <FrameLayout
+        android:id="@+id/content_layout"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"/>
+</LinearLayout>

lib_media_selector/src/boxing-impl/res/layout/activity_boxing_bottom_sheet.xml

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<androidx.coordinatorlayout.widget.CoordinatorLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:orientation="vertical">
+
+        <include layout="@layout/layout_boxing_app_bar"/>
+
+        <ImageView
+            android:id="@+id/media_result"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent"
+            android:layout_gravity="center"
+            android:padding="@dimen/boxing_activity_horizontal_margin"/>
+
+    </LinearLayout>
+
+    <FrameLayout
+        android:id="@+id/content_layout"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="@color/boxing_white1"
+        app:behavior_hideable="true"
+        app:behavior_peekHeight="300dp"
+        app:layout_behavior="com.google.android.material.bottomsheet.BottomSheetBehavior"/>
+
+</androidx.coordinatorlayout.widget.CoordinatorLayout>

lib_media_selector/src/boxing-impl/res/layout/activity_boxing_view.xml

@@ -0,0 +1,83 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/image_layout"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:background="@color/boxing_black1"
+    android:orientation="vertical">
+
+    <androidx.appcompat.widget.Toolbar
+        android:id="@+id/nav_top_bar"
+        android:layout_width="match_parent"
+        android:elevation="2dp"
+        android:layout_height="?android:attr/actionBarSize"
+        app:theme="@style/Boxing.ToolbarTheme">
+
+        <TextView
+            android:id="@+id/title"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:layout_centerInParent="true"
+            android:drawablePadding="8dp"
+            android:gravity="center_vertical"
+            android:paddingLeft="8dp"
+            android:paddingRight="8dp"
+            android:textAppearance="@style/Boxing.TextAppearance.App.Medium"/>
+    </androidx.appcompat.widget.Toolbar>
+
+    <ProgressBar
+        android:id="@+id/loading"
+        style="?android:attr/progressBarStyleLarge"
+        android:layout_width="wrap_content"
+        android:layout_height="0dp"
+        android:layout_gravity="center"
+        android:layout_weight="1"
+        android:indeterminate="true"/>
+
+    <com.bilibili.boxing_impl.view.HackyViewPager
+        android:id="@+id/pager"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:visibility="gone"/>
+
+    <FrameLayout
+        android:id="@+id/item_choose_layout"
+        android:layout_width="match_parent"
+        android:layout_height="56dp"
+        android:layout_gravity="bottom"
+        android:elevation="2dp">
+
+        <Button
+            android:id="@+id/image_items_ok"
+            android:layout_width="wrap_content"
+            android:layout_height="30dp"
+            android:layout_gravity="right|center_vertical"
+            android:layout_marginRight="@dimen/boxing_item_spacing"
+            android:minWidth="60dp"
+            android:paddingLeft="@dimen/boxing_item_half_spacing"
+            android:paddingRight="@dimen/boxing_item_half_spacing"
+            android:text="@string/boxing_ok"
+            android:background="@drawable/selector_boxing_btn_solid"
+            android:textColor="@color/boxing_white"/>
+    </FrameLayout>
+</LinearLayout>

lib_media_selector/src/boxing-impl/res/layout/fragmant_boxing_view.xml

@@ -0,0 +1,78 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/container"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/media_recycleview"
+        android:layout_width="match_parent"
+        android:layout_height="0dp"
+        android:layout_weight="1"
+        android:visibility="gone"
+        android:scrollbars="vertical"/>
+
+    <include
+        android:id="@+id/empty_txt"
+        layout="@layout/layout_boxing_empty_txt"/>
+
+    <ProgressBar
+        android:id="@+id/loading"
+        style="?android:attr/progressBarStyleLarge"
+        android:layout_width="wrap_content"
+        android:layout_height="match_parent"
+        android:layout_gravity="center"
+        android:indeterminate="true"/>
+
+    <FrameLayout
+        android:id="@+id/multi_picker_layout"
+        android:layout_width="match_parent"
+        android:layout_height="56dp"
+        android:background="@color/boxing_white">
+
+        <Button
+            android:id="@+id/choose_preview_btn"
+            android:layout_width="60dp"
+            android:layout_height="30dp"
+            android:layout_gravity="left|center_vertical"
+            android:layout_marginLeft="@dimen/boxing_item_spacing"
+            android:background="@drawable/selector_boxing_btn_solid"
+            android:text="@string/boxing_preview"
+            android:textAppearance="@style/Boxing.TextAppearance.App.Medium"
+            android:textColor="@color/boxing_white"/>
+
+        <Button
+            android:id="@+id/choose_ok_btn"
+            android:layout_width="wrap_content"
+            android:layout_height="30dp"
+            android:layout_gravity="right|center_vertical"
+            android:layout_marginRight="@dimen/boxing_item_spacing"
+            android:background="@drawable/selector_boxing_btn_solid"
+            android:minWidth="60dp"
+            android:paddingLeft="@dimen/boxing_item_half_spacing"
+            android:paddingRight="@dimen/boxing_item_half_spacing"
+            android:text="@string/boxing_ok"
+            android:textAppearance="@style/Boxing.TextAppearance.App.Medium"
+            android:textColor="@color/boxing_white"/>
+    </FrameLayout>
+
+</LinearLayout>

lib_media_selector/src/boxing-impl/res/layout/fragment_boxing_bottom_sheet.xml

@@ -0,0 +1,72 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="horizontal"
+        android:background="@color/boxing_black"
+        android:padding="@dimen/boxing_activity_vertical_margin">
+
+        <TextView
+            android:id="@+id/textView"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:gravity="left"
+            android:text="@string/boxing_default_album"
+            android:textColor="@color/boxing_white"/>
+
+        <TextView
+            android:id="@+id/finish_txt"
+            android:layout_width="0dp"
+            android:layout_height="wrap_content"
+            android:layout_weight="1"
+            android:gravity="right"
+            android:text="@string/boxing_finish"
+            android:textColor="@color/boxing_white"/>
+
+    </LinearLayout>
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/media_recycleview"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="@color/boxing_white1"
+        android:visibility="gone"/>
+
+    <ProgressBar
+        android:id="@+id/loading"
+        style="?android:attr/progressBarStyleLarge"
+        android:layout_width="wrap_content"
+        android:layout_height="match_parent"
+        android:layout_weight="1"
+        android:layout_gravity="center"
+        android:indeterminate="true"/>
+
+    <include
+        android:id="@+id/empty_txt"
+        layout="@layout/layout_boxing_empty_txt"/>
+
+</LinearLayout>

lib_media_selector/src/boxing-impl/res/layout/fragment_boxing_raw_image.xml

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+             android:layout_width="match_parent"
+             android:layout_height="match_parent">
+
+    <uk.co.senab.photoview.PhotoView
+        android:id="@+id/photo_view"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_gravity="center"
+        android:layout_margin="@dimen/boxing_item_half_spacing"/>
+
+    <ProgressBar
+        android:id="@+id/loading"
+        style="?android:attr/progressBarStyleLarge"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="center"
+        android:indeterminate="true"/>
+</FrameLayout>

lib_media_selector/src/boxing-impl/res/layout/layout_boxing_album.xml

@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<LinearLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="match_parent"
+    android:orientation="vertical">
+
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/album_recycleview"
+        android:layout_width="match_parent"
+        android:layout_height="300dp"
+        android:background="@color/boxing_white"
+        android:scrollbars="vertical"/>
+
+    <View
+        android:id="@+id/album_shadow"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:background="@color/boxing_colorPrimaryAlpha"/>
+
+</LinearLayout>

lib_media_selector/src/boxing-impl/res/layout/layout_boxing_album_item.xml

@@ -0,0 +1,71 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+                xmlns:tools="http://schemas.android.com/tools"
+                android:id="@+id/album_layout"
+                android:layout_width="match_parent"
+                android:layout_height="56dp"
+                android:background="?android:selectableItemBackground"
+                android:paddingTop="@dimen/boxing_item_spacing">
+
+    <ImageView
+        android:id="@+id/album_thumbnail"
+        android:layout_width="50dp"
+        android:layout_height="50dp"
+        android:layout_alignParentLeft="true"
+        android:layout_centerVertical="true"
+        android:layout_marginLeft="12dp"
+        android:scaleType="centerCrop"/>
+
+    <TextView
+        android:id="@+id/album_name"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_centerVertical="true"
+        android:layout_marginLeft="12dp"
+        android:layout_toRightOf="@id/album_thumbnail"
+        android:ellipsize="end"
+        android:maxEms="12"
+        android:singleLine="true"
+        android:textAppearance="@style/Boxing.TextAppearance.App.Medium"
+        android:textColor="@color/boxing_gray1"
+        tools:text="My Favorite Album"/>
+
+    <TextView
+        android:id="@+id/album_size"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_centerVertical="true"
+        android:layout_marginLeft="4dp"
+        android:layout_toRightOf="@id/album_name"
+        android:textAppearance="@style/Boxing.TextAppearance.App.Medium"
+        android:textColor="@color/boxing_gray1"
+        tools:text="(980)"/>
+
+    <ImageView
+        android:id="@+id/album_checked"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_alignParentRight="true"
+        android:layout_centerVertical="true"
+        android:layout_marginRight="8dp"
+        android:src="@drawable/ic_boxing_check_black"
+        android:visibility="gone"
+        tools:visibility="visible"/>
+</RelativeLayout>

lib_media_selector/src/boxing-impl/res/layout/layout_boxing_app_bar.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<androidx.appcompat.widget.Toolbar
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto"
+    android:id="@+id/nav_top_bar"
+    android:layout_width="match_parent"
+    android:layout_height="56dp"
+    app:theme="@style/Boxing.ToolbarTheme"/>
+

lib_media_selector/src/boxing-impl/res/layout/layout_boxing_empty_txt.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<TextView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/empty_txt"
+    android:layout_width="match_parent"
+    android:layout_height="0dp"
+    android:layout_gravity="center"
+    android:layout_weight="1"
+    android:drawablePadding="4dp"
+    android:gravity="center"
+    android:text="@string/boxing_nothing_found"
+    android:textColor="@color/boxing_black"
+    android:visibility="gone"
+    tools:visibility="visible"/>

lib_media_selector/src/boxing-impl/res/layout/layout_boxing_media_item.xml

@@ -0,0 +1,83 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<merge xmlns:android="http://schemas.android.com/apk/res/android"
+       xmlns:tools="http://schemas.android.com/tools"
+       android:layout_width="match_parent"
+       android:layout_height="match_parent">
+
+    <ImageView
+        android:id="@+id/media_item"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:layout_gravity="center"
+        android:scaleType="centerCrop"/>
+
+    <ImageView
+        android:id="@+id/media_item_check"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_gravity="right"
+        android:paddingTop="6dp"
+        android:paddingRight="6dp"
+        android:paddingBottom="12dp"
+        android:paddingLeft="12dp"
+        android:src="@drawable/shape_boxing_unchecked"/>
+
+    <FrameLayout
+        android:id="@+id/video_layout"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:layout_gravity="bottom"
+        android:background="@color/boxing_colorPrimaryAlpha"
+        android:paddingBottom="2dp"
+        android:paddingTop="4dp"
+        android:visibility="gone"
+        tools:visibility="visible">
+
+        <TextView
+            android:id="@+id/video_duration_txt"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center_vertical|left"
+            android:drawablePadding="4dp"
+            android:maxEms="6"
+            android:paddingLeft="4dp"
+            android:textAppearance="@style/Boxing.TextAppearance.App.Medium"
+            android:textColor="@color/boxing_white"
+            tools:text="00:30"/>
+
+        <TextView
+            android:id="@+id/video_size_txt"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center_vertical|right"
+            android:maxEms="4"
+            android:paddingRight="4dp"
+            android:textAppearance="@style/Boxing.TextAppearance.App.Medium"
+            android:textColor="@color/boxing_white"
+            tools:text="20M"/>
+    </FrameLayout>
+
+    <View
+        android:id="@+id/media_font_layout"
+        android:layout_width="match_parent"
+        android:layout_height="match_parent"
+        android:visibility="gone"
+        android:background="@color/boxing_black_alpha15"/>
+</merge>

lib_media_selector/src/boxing-impl/res/layout/layout_boxing_recycleview_header.xml

@@ -0,0 +1,35 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
+                android:id="@+id/camera_layout"
+                android:layout_width="match_parent"
+                android:layout_height="wrap_content"
+                android:background="@color/boxing_black"
+                android:foreground="?android:selectableItemBackground"
+                android:minHeight="100dp"
+                android:minWidth="100dp">
+
+    <ImageView
+        android:id="@+id/camera_img"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:layout_centerInParent="true"
+        android:textColor="@color/boxing_white"
+        android:textSize="14sp"/>
+</RelativeLayout>

lib_media_selector/src/boxing-impl/res/layout/layout_boxing_recycleview_item.xml

@@ -0,0 +1,23 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<com.bilibili.boxing_impl.view.MediaItemLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/media_layout"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content" />

lib_media_selector/src/boxing-impl/res/layout/layout_boxing_simple_media_item.xml

@@ -0,0 +1,25 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<ImageView
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/media_item"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:layout_gravity="center"
+    android:scaleType="centerCrop"/>

lib_media_selector/src/boxing-impl/res/menu/activity_boxing_image_viewer.xml

@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<menu xmlns:android="http://schemas.android.com/apk/res/android"
+    xmlns:app="http://schemas.android.com/apk/res-auto">
+
+    <item
+        android:id="@+id/menu_image_item_selected"
+        android:icon="@drawable/shape_boxing_unchecked"
+        android:title=""
+        app:showAsAction="always" />
+</menu>

lib_media_selector/src/boxing-impl/res/values-en/strings.xml

@@ -0,0 +1,48 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<resources>
+    <string name="boxing_ok">OK</string>
+    <string name="boxing_fab_label_camera">take a shot</string>
+
+    <string name="boxing_image_preview_title_fmt">%1$s/%2$s</string>
+    <string name="boxing_image_preview_ok_fmt">%1$s/%2$s OK</string>
+    <string name="boxing_image_select_ok_fmt">(%1$s/%2$s) OK</string>
+
+    <string name="boxing_max_image_over_fmt">%d picture is limited</string>
+    <string name="boxing_gif_too_big">the gif is too big!</string>
+    <string name="boxing_pick_single_video">Pick a video</string>
+    <string name="boxing_pick_multi_image">Pick pictures</string>
+    <string name="boxing_pick_single_image_crop">Pick a picture with crop</string>
+    <string name="boxing_pick_single_image">Pick a picture</string>
+    <string name="boxing_video_title">videos</string>
+    <string name="boxing_storage_deny">Device storage read error or temporarily unavailable. Please try again later</string>
+    <string name="boxing_finish">finish</string>
+    <string name="boxing_start_pick">start</string>
+    <string name="boxing_load_image_fail">load fail!</string>
+    <string name="boxing_storage_permission_deny">You need to access the storage device to select the picture
+        , please allow "storage space" right in the "System Settings" dialog box or authorization.</string>
+    <string name="boxing_camera_permission_deny">To access your camera to take pictures,
+        enable the "Use Camera" permission in the "System Settings" or Authorization dialog box.</string>
+    <string name="boxing_default_album">Pictures</string>
+    <string name="boxing_crop_error">sorry, error occurs when cropping</string>
+    <string name="boxing_nothing_found">nothing!</string>
+    <string name="boxing_too_many_picture_fmt">You can only select up to %d pictures</string>
+    <string name="boxing_default_album_name">Pictures</string>
+    <string name="boxing_preview">Preview</string>
+</resources>

lib_media_selector/src/boxing-impl/res/values/colors.xml

@@ -0,0 +1,37 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<resources>
+    <color name="boxing_colorPrimary">#000000</color>
+    <color name="boxing_colorPrimaryDark">#ff212121</color>
+    <color name="boxing_colorPrimaryAlpha">#44000000</color>
+    <color name="boxing_colorAccent">#FF4081</color>
+
+    <color name="boxing_gray">#999999</color>
+    <color name="boxing_gray1">#333333</color>
+
+    <color name="boxing_white">#ffffff</color>
+    <color name="boxing_white1">#fafafa</color>
+    <color name="boxing_white2">#eaeaea</color>
+
+    <color name="boxing_black">#000000</color>
+    <color name="boxing_black1">#1b1b1b</color>
+    <color name="boxing_black_alpha15">#26000000</color>
+    <color name="boxing_black_alpha20">#33000000</color>
+    <color name="boxing_black_alpha25">#3c000000</color>
+</resources>

lib_media_selector/src/boxing-impl/res/values/dimens.xml

@@ -0,0 +1,32 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<resources>
+    <dimen name="boxing_activity_horizontal_margin">16dp</dimen>
+    <dimen name="boxing_activity_vertical_margin">16dp</dimen>
+
+    <dimen name="boxing_text_size_xlarge">16sp</dimen>
+    <dimen name="boxing_text_size_large">14sp</dimen>
+    <dimen name="boxing_text_size_medium">12sp</dimen>
+    <dimen name="boxing_text_size_small">10sp</dimen>
+
+    <dimen name="boxing_item_spacing">8dp</dimen>
+    <dimen name="boxing_item_half_spacing">4dp</dimen>
+    <dimen name="boxing_media_margin">2dp</dimen>
+    <dimen name="boxing_corner_radius">2dp</dimen>
+</resources>

lib_media_selector/src/boxing-impl/res/values/strings.xml

@@ -0,0 +1,52 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<resources>
+    <string name="boxing_app_name">Boxing</string>
+    <string name="boxing_ok">确定</string>
+    <string name="boxing_fab_label_camera">拍照</string>
+
+    <string name="boxing_image_preview_title_fmt">%1$s/%2$s</string>
+    <string name="boxing_image_preview_ok_fmt">%1$s/%2$s 确定</string>
+    <string name="boxing_image_select_ok_fmt">(%1$s/%2$s) 确定</string>
+    <string name="boxing_album_images_fmt">(%d)</string>
+
+    <string name="boxing_max_image_over_fmt">你最多只能选择%d张图片</string>
+    <string name="boxing_gif_too_big">您选择的gif图片过大，请压缩后再上传</string>
+    <string name="boxing_pick_single_video">视频单选</string>
+    <string name="boxing_pick_multi_image">图片多选</string>
+    <string name="boxing_pick_single_image_crop">图片单选加裁剪</string>
+    <string name="boxing_pick_single_image">图片单选</string>
+    <string name="boxing_video_title">视频相册</string>
+    <string name="boxing_finish">完成</string>
+    <string name="boxing_start_pick">开始选图</string>
+    <string name="boxing_load_image_fail">肥肠抱歉，加载出错啦</string>
+    <string name="boxing_storage_permission_deny">需要访问你的存储设备来选择图片，请在“系统设置”或授权对话框中允许“存储空间”权限。</string>
+    <string name="boxing_camera_permission_deny">需要访问你的相机来拍照，请在“系统设置”或授权对话框中允许“使用相机”权限。</string>
+    <string name="boxing_storage_deny">设备存储读取出错或暂不可用，请稍候重试</string>
+    <string name="boxing_crop_error">肥肠抱歉，裁剪出错啦</string>
+    <string name="boxing_camera_unavailble">相机不可用,请检查相机权限！</string>
+    <string name="boxing_handling">处理中</string>
+    <string name="boxing_default_album">默认相册</string>
+    <string name="boxing_nothing_found">什么也找不到</string>
+    <string name="boxing_too_many_picture_fmt">您最多只能选择%d张图片</string>
+    <string name="boxing_default_album_name">所有相片</string>
+    <string name="boxing_preview">预览</string>
+
+
+</resources>

lib_media_selector/src/boxing-impl/res/values/styles.xml

@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<resources>
+
+    <style name="Boxing.AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
+        <item name="colorPrimary">@color/boxing_colorPrimary</item>
+        <item name="colorPrimaryDark">@color/boxing_colorPrimaryDark</item>
+        <item name="colorAccent">@color/boxing_colorAccent</item>
+    </style>
+
+    <!-- BoxingActivity Theme-->
+    <style name="Boxing.AppTheme.NoActionBar" parent="Boxing.AppTheme">
+        <item name="android:windowNoTitle">true</item>
+        <item name="android:fitsSystemWindows">false</item>
+    </style>
+
+    <style name="Boxing.PopupAnimation" parent="android:Animation">
+        <item name="android:windowEnterAnimation">@anim/boxing_fade_in</item>
+        <item name="android:windowExitAnimation">@anim/boxing_fade_out</item>
+    </style>
+
+    <style name="Boxing.ToolbarTheme" parent="Boxing.AppTheme.NoActionBar" >
+        <item name="titleTextColor">@color/boxing_white</item>
+        <item name="android:textColorSecondary">@color/boxing_white</item>
+        <item name="android:textColor">@color/boxing_white</item>
+        <item name="android:background">@color/boxing_colorPrimaryDark</item>
+    </style>
+
+    <!-- TextAppearance -->
+    <style name="Boxing.TextAppearance.App.Medium" parent="TextAppearance.AppCompat">
+        <item name="android:textSize">@dimen/boxing_text_size_medium</item>
+    </style>
+
+</resources>

lib_media_selector/src/boxing/java/com/bilibili/boxing/AbsBoxingActivity.java

@@ -0,0 +1,67 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing;
+
+import android.content.Intent;
+import android.os.Bundle;
+
+import com.bilibili.boxing.model.BoxingManager;
+import com.bilibili.boxing.model.config.BoxingConfig;
+import com.bilibili.boxing.model.entity.BaseMedia;
+import com.bilibili.boxing.presenter.PickerContract;
+import com.bilibili.boxing.presenter.PickerPresenter;
+
+import java.util.ArrayList;
+
+import androidx.annotation.NonNull;
+import androidx.appcompat.app.AppCompatActivity;
+
+/**
+ * A abstract class to connect {@link com.bilibili.boxing.presenter.PickerContract.View} and {@link com.bilibili.boxing.presenter.PickerContract.Presenter}.
+ * one job has to be done. override {@link #onCreateBoxingView(ArrayList)} to create a subclass for {@link AbsBoxingViewFragment}.
+ *
+ * @author ChenSL
+ */
+public abstract class AbsBoxingActivity extends AppCompatActivity implements Boxing.OnBoxingFinishListener {
+
+    @Override
+    protected void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        AbsBoxingViewFragment view = onCreateBoxingView(getSelectedMedias(getIntent()));
+        BoxingConfig pickerConfig = BoxingManager.getInstance().getBoxingConfig();
+        view.setPresenter(new PickerPresenter(view));
+        view.setPickerConfig(pickerConfig);
+        Boxing.get().setupFragment(view, this);
+    }
+
+    private ArrayList<BaseMedia> getSelectedMedias(Intent intent) {
+        return intent.getParcelableArrayListExtra(Boxing.EXTRA_SELECTED_MEDIA);
+    }
+
+    public BoxingConfig getBoxingConfig() {
+        return BoxingManager.getInstance().getBoxingConfig();
+    }
+
+    /**
+     * create a {@link PickerContract.View} attaching to
+     * {@link PickerContract.Presenter},call in {@link #onCreate(Bundle)}
+     */
+    @NonNull
+    public abstract AbsBoxingViewFragment onCreateBoxingView(ArrayList<BaseMedia> medias);
+
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/AbsBoxingViewActivity.java

@@ -0,0 +1,241 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing;
+
+import android.content.ContentResolver;
+import android.content.Intent;
+import android.os.Bundle;
+import android.os.PersistableBundle;
+import android.widget.ImageView;
+
+import com.bilibili.boxing.loader.IBoxingCallback;
+import com.bilibili.boxing.model.BoxingManager;
+import com.bilibili.boxing.model.config.BoxingConfig;
+import com.bilibili.boxing.model.entity.AlbumEntity;
+import com.bilibili.boxing.model.entity.BaseMedia;
+import com.bilibili.boxing.presenter.PickerContract;
+import com.bilibili.boxing.presenter.PickerPresenter;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.appcompat.app.AppCompatActivity;
+
+/**
+ * A abstract class which implements {@link PickerContract.View} for custom media view.
+ * For view big images.
+ *
+ * @author ChenSL
+ */
+public abstract class AbsBoxingViewActivity extends AppCompatActivity implements PickerContract.View {
+    ArrayList<BaseMedia> mSelectedImages;
+    String mAlbumId;
+    int mStartPos;
+
+    private PickerContract.Presenter mPresenter;
+
+    /**
+     * start loading when the permission request is completed.
+     * call {@link #loadMedias()} or {@link #loadMedias(int, String)}.
+     */
+    public abstract void startLoading();
+
+    /**
+     * override this method to handle the medias.
+     * make sure {@link #loadMedias()} ()} being called first.
+     *
+     * @param medias the results of medias
+     */
+    @Override
+    public void showMedia(@Nullable List<BaseMedia> medias, int allCount) {
+    }
+
+    @Override
+    public void showAlbum(@Nullable List<AlbumEntity> albums) {
+    }
+
+    /**
+     * to clear all medias the first time(the page number is 0). do some clean work.
+     */
+    @Override
+    public void clearMedia() {
+    }
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+        BoxingConfig config;
+        if (savedInstanceState != null) {
+            config = savedInstanceState.getParcelable(Boxing.EXTRA_CONFIG);
+        } else {
+            config = BoxingManager.getInstance().getBoxingConfig();
+        }
+        setPickerConfig(config);
+        parseSelectedMedias(savedInstanceState, getIntent());
+        setPresenter(new PickerPresenter(this));
+    }
+
+    private void parseSelectedMedias(Bundle savedInstanceState, Intent intent) {
+        if (savedInstanceState != null) {
+            mSelectedImages = savedInstanceState.getParcelableArrayList(Boxing.EXTRA_SELECTED_MEDIA);
+            mAlbumId = savedInstanceState.getString(Boxing.EXTRA_ALBUM_ID);
+            mStartPos = savedInstanceState.getInt(Boxing.EXTRA_START_POS, 0);
+        } else if (intent != null) {
+            mStartPos = intent.getIntExtra(Boxing.EXTRA_START_POS, 0);
+            mSelectedImages = intent.getParcelableArrayListExtra(Boxing.EXTRA_SELECTED_MEDIA);
+            mAlbumId = intent.getStringExtra(Boxing.EXTRA_ALBUM_ID);
+        }
+    }
+
+    @Override
+    public final void setPresenter(@NonNull PickerContract.Presenter presenter) {
+        this.mPresenter = presenter;
+    }
+
+    /**
+     * get the {@link ContentResolver}
+     */
+    @NonNull
+    @Override
+    public final ContentResolver getAppCr() {
+        return getApplicationContext().getContentResolver();
+    }
+
+    public final void loadRawImage(@NonNull ImageView img, @NonNull String path, int width, int height, IBoxingCallback callback) {
+        BoxingMediaLoader.getInstance().displayRaw(img, path, width, height, callback);
+    }
+
+    /**
+     * called the job is done.Click the ok button, take a photo from camera, crop a photo.
+     * most of the time, you do not have to override.
+     *
+     * @param medias the list of selection
+     */
+    @Override
+    public void onFinish(@NonNull List<BaseMedia> medias) {
+        Intent intent = new Intent();
+        intent.putParcelableArrayListExtra(Boxing.EXTRA_RESULT, (ArrayList<BaseMedia>) medias);
+    }
+
+    /**
+     * need crop or not
+     *
+     * @return true, need it.
+     */
+    public final boolean hasCropBehavior() {
+        BoxingConfig config = BoxingManager.getInstance().getBoxingConfig();
+        return config != null && config.isSingleImageMode() && config.getCropOption() != null;
+    }
+
+    /**
+     * to start the crop behavior, call it when {@link #hasCropBehavior()} return true.
+     *
+     * @param media       the media to be cropped.
+     * @param requestCode The integer request code originally supplied to
+     *                    startActivityForResult(), allowing you to identify who this
+     *                    result came from.
+     */
+    @Override
+    public final void startCrop(@NonNull BaseMedia media, int requestCode) {
+    }
+
+    /**
+     * set or update the config.most of the time, you do not have to call it.
+     *
+     * @param config {@link BoxingConfig}
+     */
+    @Override
+    public final void setPickerConfig(BoxingConfig config) {
+        if (config == null) {
+            return;
+        }
+        BoxingManager.getInstance().setBoxingConfig(config);
+    }
+
+    @Override
+    public void onSaveInstanceState(Bundle outState, PersistableBundle outPersistentState) {
+        super.onSaveInstanceState(outState, outPersistentState);
+        outState.putParcelable(Boxing.EXTRA_CONFIG, BoxingManager.getInstance().getBoxingConfig());
+    }
+
+    /**
+     * call this to clear resource.
+     */
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        if (mPresenter != null) {
+            mPresenter.destroy();
+        }
+    }
+
+    /**
+     * in {@link BoxingConfig.Mode#MULTI_IMG}, call this to pick the selected medias in all medias.
+     */
+    public final void checkSelectedMedia(List<BaseMedia> allMedias, List<BaseMedia> selectedMedias) {
+        mPresenter.checkSelectedMedia(allMedias, selectedMedias);
+    }
+
+    /**
+     * load first page of medias.
+     * use {@link #showMedia(List, int)} to get the result.
+     */
+    public final void loadMedias() {
+        mPresenter.loadMedias(0, AlbumEntity.DEFAULT_NAME);
+    }
+
+    /**
+     * load the medias for the specify page and album id.
+     * use {@link #showMedia(List, int)} to get the result.
+     *
+     * @param page    page numbers.
+     * @param albumId the album id is {@link AlbumEntity#mBucketId}.
+     */
+    public final void loadMedias(int page, String albumId) {
+        mPresenter.loadMedias(page, albumId);
+    }
+
+    /**
+     * get the max count set before
+     */
+    public final int getMaxCount() {
+        BoxingConfig config = BoxingManager.getInstance().getBoxingConfig();
+        if (config == null) {
+            return BoxingConfig.DEFAULT_SELECTED_COUNT;
+        }
+        return config.getMaxCount();
+    }
+
+    @NonNull
+    public final ArrayList<BaseMedia> getSelectedImages() {
+        if (mSelectedImages != null) {
+            return mSelectedImages;
+        }
+        return new ArrayList<>();
+    }
+
+    public final String getAlbumId() {
+        return mAlbumId;
+    }
+
+    public final int getStartPos() {
+        return mStartPos;
+    }
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/AbsBoxingViewFragment.java

@@ -0,0 +1,485 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing;
+
+import android.Manifest;
+import android.app.Activity;
+import android.content.ContentResolver;
+import android.content.Intent;
+import android.content.pm.PackageManager;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Bundle;
+import android.view.View;
+
+import com.bilibili.boxing.model.BoxingBuilderConfig;
+import com.bilibili.boxing.model.BoxingManager;
+import com.bilibili.boxing.model.config.BoxingConfig;
+import com.bilibili.boxing.model.config.BoxingCropOption;
+import com.bilibili.boxing.model.entity.AlbumEntity;
+import com.bilibili.boxing.model.entity.BaseMedia;
+import com.bilibili.boxing.model.entity.impl.ImageMedia;
+import com.bilibili.boxing.presenter.PickerContract;
+import com.bilibili.boxing.utils.CameraPickerHelper;
+
+import java.io.File;
+import java.lang.ref.WeakReference;
+import java.util.ArrayList;
+import java.util.List;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.core.content.ContextCompat;
+import androidx.fragment.app.Fragment;
+
+import static androidx.core.content.PermissionChecker.PERMISSION_GRANTED;
+
+
+/**
+ * A abstract class which implements {@link PickerContract.View} for custom media view.
+ * only one methods need to override {@link #startLoading()}, but there is more function to achieve by
+ * checking every method can override.
+ *
+ * @author ChenSL
+ */
+public abstract class AbsBoxingViewFragment extends Fragment implements PickerContract.View {
+    public static final String[] STORAGE_PERMISSIONS =
+            {Manifest.permission.WRITE_EXTERNAL_STORAGE, Manifest.permission.READ_EXTERNAL_STORAGE};
+    public static final String[] CAMERA_PERMISSIONS = {Manifest.permission.CAMERA};
+
+    private static final int REQUEST_CODE_PERMISSION = 233;
+
+    private PickerContract.Presenter mPresenter;
+    private CameraPickerHelper mCameraPicker;
+    private Boxing.OnBoxingFinishListener mOnFinishListener;
+
+    /**
+     * start loading when the permission request is completed.
+     * call {@link #loadMedias()} or {@link #loadMedias(int, String)}, call {@link #loadAlbum()} if albums needed.
+     */
+    public abstract void startLoading();
+
+    /**
+     * called when request {@link Manifest.permission#WRITE_EXTERNAL_STORAGE} and {@link Manifest.permission#CAMERA} permission error.
+     *
+     * @param e a IllegalArgumentException, IllegalStateException or SecurityException will be throw
+     */
+    public void onRequestPermissionError(String[] permissions, Exception e) {
+    }
+
+    /**
+     * called when request {@link Manifest.permission#WRITE_EXTERNAL_STORAGE} and {@link Manifest.permission#CAMERA} permission successfully.
+     */
+    public void onRequestPermissionSuc(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+    }
+
+    /**
+     * get the result of using camera to take a photo.
+     *
+     * @param media {@link BaseMedia}
+     */
+    public void onCameraFinish(BaseMedia media) {
+    }
+
+    /**
+     * called when camera start error
+     */
+    public void onCameraError() {
+    }
+
+    /**
+     * must override when care about the input medias, which means you call {@link #setSelectedBundle(ArrayList)} first.
+     * this method is called in {@link Fragment#onCreate(Bundle)}, so override this rather than {@link Fragment#onCreate(Bundle)}.
+     *
+     * @param bundle         If the fragment is being re-created from
+     *                       a previous saved state, this is the state.
+     * @param selectedMedias the input medias, the parameter of {@link #setSelectedBundle(ArrayList)}.
+     */
+    public void onCreateWithSelectedMedias(Bundle bundle, @Nullable List<BaseMedia> selectedMedias) {
+    }
+
+    /**
+     * override this method to handle the medias.
+     * make sure {@link #loadMedias()} ()} being called first.
+     *
+     * @param medias the results of medias
+     */
+    @Override
+    public void showMedia(@Nullable List<BaseMedia> medias, int allCount) {
+    }
+
+    /**
+     * override this method to handle the album.
+     * make sure {@link #loadAlbum()} being called first.
+     *
+     * @param albums the results of albums
+     */
+    @Override
+    public void showAlbum(@Nullable List<AlbumEntity> albums) {
+    }
+
+    /**
+     * to clear all medias the first time(the page number is 0). do some clean work.
+     */
+    @Override
+    public void clearMedia() {
+    }
+
+    @Override
+    public void onCreate(@Nullable Bundle savedInstanceState) {
+        BoxingConfig config;
+        if (savedInstanceState != null) {
+            config = savedInstanceState.getParcelable(Boxing.EXTRA_CONFIG);
+        } else {
+            config = BoxingManager.getInstance().getBoxingConfig();
+        }
+        setPickerConfig(config);
+        onCreateWithSelectedMedias(savedInstanceState, parseSelectedMedias(savedInstanceState, getArguments()));
+        super.onCreate(savedInstanceState);
+
+        initCameraPhotoPicker(savedInstanceState);
+    }
+
+    @Nullable
+    private ArrayList<BaseMedia> parseSelectedMedias(Bundle savedInstanceState, Bundle argument) {
+        ArrayList<BaseMedia> selectedMedias = null;
+        if (savedInstanceState != null) {
+            selectedMedias = savedInstanceState.getParcelableArrayList(Boxing.EXTRA_SELECTED_MEDIA);
+        } else if (argument != null) {
+            selectedMedias = argument.getParcelableArrayList(Boxing.EXTRA_SELECTED_MEDIA);
+        }
+        return selectedMedias;
+    }
+
+    private void initCameraPhotoPicker(Bundle savedInstanceState) {
+        BoxingConfig config = BoxingManager.getInstance().getBoxingConfig();
+        if (config == null || !config.isNeedCamera()) {
+            return;
+        }
+        mCameraPicker = new CameraPickerHelper(savedInstanceState);
+        mCameraPicker.setPickCallback(new CameraListener(this));
+    }
+
+    @Override
+    public void onViewCreated(View view, @Nullable Bundle savedInstanceState) {
+        super.onViewCreated(view, savedInstanceState);
+        checkPermissionAndLoad();
+    }
+
+    private void checkPermissionAndLoad() {
+        try {
+            if (!BoxingBuilderConfig.TESTING && Build.VERSION.SDK_INT >= Build.VERSION_CODES.M
+                    && ContextCompat.checkSelfPermission(getActivity(), STORAGE_PERMISSIONS[0]) != PERMISSION_GRANTED
+                    && ContextCompat.checkSelfPermission(getActivity(), STORAGE_PERMISSIONS[1]) != PERMISSION_GRANTED) {
+                requestPermissions(STORAGE_PERMISSIONS, REQUEST_CODE_PERMISSION);
+            } else {
+                startLoading();
+            }
+        } catch (IllegalArgumentException | IllegalStateException e) {
+            onRequestPermissionError(STORAGE_PERMISSIONS, e);
+        }
+
+    }
+
+
+    @Override
+    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
+        if (REQUEST_CODE_PERMISSION == requestCode) {
+            if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
+                onRequestPermissionSuc(requestCode, permissions, grantResults);
+            } else {
+                onRequestPermissionError(permissions,
+                        new SecurityException("request android.permission.READ_EXTERNAL_STORAGE error."));
+            }
+        }
+    }
+
+    /**
+     * called when you have input medias, then call {@link #onCreateWithSelectedMedias(Bundle, List)} to get the input medias.
+     *
+     * @param selectedMedias input medias
+     * @return {@link AbsBoxingViewFragment}
+     */
+    public final AbsBoxingViewFragment setSelectedBundle(ArrayList<BaseMedia> selectedMedias) {
+        Bundle bundle = new Bundle();
+        if (selectedMedias != null && !selectedMedias.isEmpty()) {
+            bundle.putParcelableArrayList(Boxing.EXTRA_SELECTED_MEDIA, selectedMedias);
+        }
+        setArguments(bundle);
+        return this;
+    }
+
+    @Override
+    public final void setPresenter(@NonNull PickerContract.Presenter presenter) {
+        this.mPresenter = presenter;
+    }
+
+    /**
+     * get the {@link ContentResolver}
+     */
+    @NonNull
+    @Override
+    public final ContentResolver getAppCr() {
+        return getActivity().getApplicationContext().getContentResolver();
+    }
+
+    /**
+     * if {@link AbsBoxingViewFragment} is not working with {@link AbsBoxingActivity}, it needs a listener to call
+     * when the jobs done.
+     *
+     * @param onFinishListener {@link Boxing.OnBoxingFinishListener}
+     */
+    final void setOnFinishListener(Boxing.OnBoxingFinishListener onFinishListener) {
+        mOnFinishListener = onFinishListener;
+    }
+
+    /**
+     * called the job is done.Click the ok button, take a photo from camera, crop a photo.
+     * most of the time, you do not have to override.
+     *
+     * @param medias the list of selection
+     */
+    @Override
+    public void onFinish(@NonNull List<BaseMedia> medias) {
+        Intent intent = new Intent();
+        intent.putParcelableArrayListExtra(Boxing.EXTRA_RESULT, (ArrayList<BaseMedia>) medias);
+        if (mOnFinishListener != null) {
+            mOnFinishListener.onBoxingFinish(intent, medias);
+        }
+
+    }
+
+    /**
+     * need crop or not
+     *
+     * @return true, need it.
+     */
+    public final boolean hasCropBehavior() {
+        BoxingConfig config = BoxingManager.getInstance().getBoxingConfig();
+        return config != null && config.isSingleImageMode() && config.getCropOption() != null;
+    }
+
+    /**
+     * to start the crop behavior, call it when {@link #hasCropBehavior()} return true.
+     *
+     * @param media       the media to be cropped.
+     * @param requestCode The integer request code originally supplied to
+     *                    startActivityForResult(), allowing you to identify who this
+     *                    result came from.
+     */
+    @Override
+    public final void startCrop(@NonNull BaseMedia media, int requestCode) {
+        BoxingCropOption cropConfig = BoxingManager.getInstance().getBoxingConfig().getCropOption();
+        BoxingCrop.getInstance().onStartCrop(getActivity(), this, cropConfig, media.getPath(), requestCode);
+    }
+
+    /**
+     * set or update the config.most of the time, you do not have to call it.
+     *
+     * @param config {@link BoxingConfig}
+     */
+    @Override
+    public final void setPickerConfig(BoxingConfig config) {
+        if (config == null) {
+            return;
+        }
+        BoxingManager.getInstance().setBoxingConfig(config);
+    }
+
+    @Override
+    public void onActivityResult(int requestCode, int resultCode, Intent data) {
+        super.onActivityResult(requestCode, resultCode, data);
+        if (mCameraPicker != null && requestCode == CameraPickerHelper.REQ_CODE_CAMERA) {
+            onCameraActivityResult(requestCode, resultCode);
+        }
+        if (hasCropBehavior()) {
+            onCropActivityResult(requestCode, resultCode, data);
+        }
+    }
+
+    @Override
+    public void onSaveInstanceState(Bundle outState) {
+        super.onSaveInstanceState(outState);
+        if (mCameraPicker != null) {
+            mCameraPicker.onSaveInstanceState(outState);
+        }
+        outState.putParcelable(Boxing.EXTRA_CONFIG, BoxingManager.getInstance().getBoxingConfig());
+    }
+
+    /**
+     * in {@link BoxingConfig.Mode#MULTI_IMG}, call this in {@link Fragment#onSaveInstanceState(Bundle)}.
+     *
+     * @param outState Bundle in which to place your saved state.
+     * @param selected the selected medias.
+     */
+    public final void onSaveMedias(Bundle outState, ArrayList<BaseMedia> selected) {
+        if (selected != null && !selected.isEmpty()) {
+            outState.putParcelableArrayList(Boxing.EXTRA_SELECTED_MEDIA, selected);
+        }
+    }
+
+    /**
+     * call this to clear resource.
+     */
+    @Override
+    public void onDestroy() {
+        super.onDestroy();
+        if (mPresenter != null) {
+            mPresenter.destroy();
+        }
+        if (mCameraPicker != null) {
+            mCameraPicker.release();
+        }
+    }
+
+    /**
+     * in {@link BoxingConfig.Mode#MULTI_IMG}, call this to pick the selected medias in all medias.
+     */
+    public final void checkSelectedMedia(List<BaseMedia> allMedias, List<BaseMedia> selectedMedias) {
+        mPresenter.checkSelectedMedia(allMedias, selectedMedias);
+    }
+
+    /**
+     * load first page of medias.
+     * use {@link #showMedia(List, int)} to get the result.
+     */
+    public final void loadMedias() {
+        mPresenter.loadMedias(0, AlbumEntity.DEFAULT_NAME);
+    }
+
+    /**
+     * load the medias for the specify page and album id.
+     * use {@link #showMedia(List, int)} to get the result.
+     *
+     * @param page    page numbers.
+     * @param albumId the album id is {@link AlbumEntity#mBucketId}.
+     */
+    public final void loadMedias(int page, String albumId) {
+        mPresenter.loadMedias(page, albumId);
+    }
+
+    /**
+     * extra call to load albums in database, use {@link #showAlbum(List)} to get result.
+     * In {@link BoxingConfig.Mode#VIDEO} it is not necessary.
+     */
+    public void loadAlbum() {
+        if (!BoxingManager.getInstance().getBoxingConfig().isVideoMode()) {
+            mPresenter.loadAlbums();
+        }
+    }
+
+    public final boolean hasNextPage() {
+        return mPresenter.hasNextPage();
+    }
+
+    public final boolean canLoadNextPage() {
+        return mPresenter.canLoadNextPage();
+    }
+
+    public final void onLoadNextPage() {
+        mPresenter.onLoadNextPage();
+    }
+
+    /**
+     * get the max count set before
+     */
+    public final int getMaxCount() {
+        BoxingConfig config = BoxingManager.getInstance().getBoxingConfig();
+        if (config == null) {
+           return BoxingConfig.DEFAULT_SELECTED_COUNT;
+        }
+        return config.getMaxCount();
+    }
+
+    /**
+     * successfully get result from camera in {@link #onActivityResult(int, int, Intent)}.
+     * call this after other operations.
+     */
+    public void onCameraActivityResult(int requestCode, int resultCode) {
+        mCameraPicker.onActivityResult(requestCode, resultCode);
+    }
+
+    /**
+     * successfully get result from crop in {@link #onActivityResult(int, int, Intent)}
+     */
+    public void onCropActivityResult(int requestCode, int resultCode, @NonNull Intent data) {
+        Uri output = BoxingCrop.getInstance().onCropFinish(resultCode, data);
+        if (output != null) {
+            List<BaseMedia> medias = new ArrayList<>(1);
+            ImageMedia media = new ImageMedia(String.valueOf(System.currentTimeMillis()), output.getPath());
+            medias.add(media);
+            onFinish(medias);
+        }
+    }
+
+    /**
+     * start camera to take a photo.
+     *
+     * @param activity      the caller activity.
+     * @param fragment      the caller fragment, may be null.
+     * @param subFolderPath the folder name in "DCIM/bili/boxing/"
+     */
+    public final void startCamera(Activity activity, Fragment fragment, String subFolderPath) {
+        try {
+            if (!BoxingBuilderConfig.TESTING && ContextCompat.checkSelfPermission(getActivity(), CAMERA_PERMISSIONS[0]) != PERMISSION_GRANTED) {
+                requestPermissions(CAMERA_PERMISSIONS, REQUEST_CODE_PERMISSION);
+            } else {
+                if (!BoxingManager.getInstance().getBoxingConfig().isVideoMode()) {
+                    mCameraPicker.startCamera(activity, fragment, subFolderPath);
+                }
+            }
+        } catch (IllegalArgumentException | IllegalStateException e) {
+            onRequestPermissionError(CAMERA_PERMISSIONS, e);
+        }
+    }
+
+    private static final class CameraListener implements CameraPickerHelper.Callback {
+        private WeakReference<AbsBoxingViewFragment> mWr;
+
+        CameraListener(AbsBoxingViewFragment fragment) {
+            mWr = new WeakReference<>(fragment);
+        }
+
+        @Override
+        public void onFinish(@NonNull CameraPickerHelper helper) {
+            AbsBoxingViewFragment fragment = mWr.get();
+            if (fragment == null) {
+                return;
+            }
+            File file = new File(helper.getSourceFilePath());
+
+            if (!file.exists()) {
+                onError(helper);
+                return;
+            }
+            ImageMedia cameraMedia = new ImageMedia(file);
+            cameraMedia.saveMediaStore(fragment.getAppCr());
+            fragment.onCameraFinish(cameraMedia);
+        }
+
+        @Override
+        public void onError(@NonNull CameraPickerHelper helper) {
+            AbsBoxingViewFragment fragment = mWr.get();
+            if (fragment == null) {
+                return;
+            }
+            fragment.onCameraError();
+        }
+
+    }
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/Boxing.java

@@ -0,0 +1,255 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing;
+
+import android.annotation.TargetApi;
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.os.Build;
+import android.os.Bundle;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.fragment.app.Fragment;
+
+import com.bilibili.boxing.model.BoxingManager;
+import com.bilibili.boxing.model.config.BoxingConfig;
+import com.bilibili.boxing.model.entity.BaseMedia;
+import com.bilibili.boxing.presenter.PickerPresenter;
+
+import java.util.ArrayList;
+import java.util.List;
+
+/**
+ * An entry for {@link AbsBoxingActivity} and {@link AbsBoxingViewFragment}.<br/>
+ * 1.call {@link #of(BoxingConfig)} to pick a mode.<br/>
+ * 2.to use {@link AbsBoxingActivity} + {@link AbsBoxingViewFragment} combination,
+ * call {@link #withIntent(Context, Class)} to make a intent and {@link #start(Activity)} to start a new Activity.<br/>
+ * to use {@link AbsBoxingViewFragment} only, just call {@link #setupFragment(AbsBoxingViewFragment, OnBoxingFinishListener)}.<br/>
+ * 3 4.to get result from a new Activity, call {@link #getResult(Intent)} in {@link Activity#onActivityResult(int, int, Intent)}.
+ *
+ * @author ChenSL
+ */
+public class Boxing {
+    public static final String EXTRA_SELECTED_MEDIA = "com.bilibili.boxing.Boxing.selected_media";
+    public static final String EXTRA_ALBUM_ID = "com.bilibili.boxing.Boxing.album_id";
+
+    static final String EXTRA_CONFIG = "com.bilibili.boxing.Boxing.config";
+    static final String EXTRA_RESULT = "com.bilibili.boxing.Boxing.result";
+    static final String EXTRA_START_POS = "com.bilibili.boxing.Boxing.start_pos";
+
+    private Intent mIntent;
+
+    private Boxing(BoxingConfig config) {
+        BoxingManager.getInstance().setBoxingConfig(config);
+        this.mIntent = new Intent();
+    }
+
+    /**
+     * get the media result.
+     */
+    @Nullable
+    public static ArrayList<BaseMedia> getResult(Intent data) {
+        if (data != null) {
+            return data.getParcelableArrayListExtra(EXTRA_RESULT);
+        }
+        return null;
+    }
+
+    /**
+     * call {@link #of(BoxingConfig)} first to specify the mode otherwise {@link BoxingConfig.Mode#MULTI_IMG} is used.<br/>
+     */
+    public static Boxing get() {
+        BoxingConfig config = BoxingManager.getInstance().getBoxingConfig();
+        if (config == null) {
+            config = new BoxingConfig(BoxingConfig.Mode.MULTI_IMG).needGif();
+            BoxingManager.getInstance().setBoxingConfig(config);
+        }
+        return new Boxing(config);
+    }
+
+    /**
+     * create a boxing entry.
+     *
+     * @param config {@link BoxingConfig}
+     */
+    public static Boxing of(BoxingConfig config) {
+        return new Boxing(config);
+    }
+
+    /**
+     * create a boxing entry.
+     *
+     * @param mode {@link BoxingConfig.Mode}
+     */
+    public static Boxing of(BoxingConfig.Mode mode) {
+        return new Boxing(new BoxingConfig(mode));
+    }
+
+    /**
+     * create a boxing entry. use {@link BoxingConfig.Mode#MULTI_IMG}.
+     */
+    public static Boxing of() {
+        BoxingConfig config = new BoxingConfig(BoxingConfig.Mode.MULTI_IMG).needGif();
+        return new Boxing(config);
+    }
+
+    /**
+     * get the intent build by boxing after call {@link #withIntent}.
+     */
+    public Intent getIntent() {
+        return mIntent;
+    }
+
+    /**
+     * same as {@link Intent#setClass(Context, Class)}
+     */
+    public Boxing withIntent(Context context, Class<?> cls) {
+        return withIntent(context, cls, null);
+    }
+
+    /**
+     * {@link Intent#setClass(Context, Class)} with input medias.
+     */
+    public Boxing withIntent(Context context, Class<?> cls, ArrayList<? extends BaseMedia> selectedMedias) {
+        mIntent.setClass(context, cls);
+        if (selectedMedias != null && !selectedMedias.isEmpty()) {
+            mIntent.putExtra(EXTRA_SELECTED_MEDIA, selectedMedias);
+        }
+        return this;
+    }
+
+    /**
+     * use to start image viewer.
+     *
+     * @param medias selected medias.
+     * @param pos    the start position.
+     */
+    public Boxing withIntent(Context context, Class<?> cls, ArrayList<? extends BaseMedia> medias, int pos) {
+        withIntent(context, cls, medias, pos, "");
+        return this;
+    }
+
+
+    /**
+     * use to start image viewer.
+     *
+     * @param medias  selected medias.
+     * @param pos     the start position.
+     * @param albumId the specify album id.
+     */
+    public Boxing withIntent(Context context, Class<?> cls, ArrayList<? extends BaseMedia> medias, int pos, String albumId) {
+        mIntent.setClass(context, cls);
+        if (medias != null && !medias.isEmpty()) {
+            mIntent.putExtra(EXTRA_SELECTED_MEDIA, medias);
+        }
+        if (pos >= 0) {
+            mIntent.putExtra(EXTRA_START_POS, pos);
+        }
+        if (albumId != null) {
+            mIntent.putExtra(EXTRA_ALBUM_ID, albumId);
+        }
+        return this;
+    }
+
+
+    /**
+     * same as {@link Activity#startActivity(Intent)}
+     */
+    public void start(@NonNull Activity activity) {
+        activity.startActivity(mIntent);
+    }
+
+    /**
+     * use to start raw image viewer.
+     *
+     * @param viewMode {@link BoxingConfig.ViewMode}
+     */
+    public void start(@NonNull Activity activity, BoxingConfig.ViewMode viewMode) {
+        BoxingManager.getInstance().getBoxingConfig().withViewer(viewMode);
+        activity.startActivity(mIntent);
+    }
+
+    /**
+     * same as {@link Activity#startActivityForResult(Intent, int, Bundle)}
+     */
+    public void start(@NonNull Activity activity, int requestCode) {
+        activity.startActivityForResult(mIntent, requestCode);
+    }
+
+    /**
+     * same as {@link Fragment#startActivityForResult(Intent, int, Bundle)}
+     */
+    public void start(@NonNull Fragment fragment, int requestCode) {
+        fragment.startActivityForResult(mIntent, requestCode);
+    }
+
+    /**
+     * use to start raw image viewer.
+     *
+     * @param viewMode {@link BoxingConfig.ViewMode}
+     */
+    public void start(@NonNull Fragment fragment, int requestCode, BoxingConfig.ViewMode viewMode) {
+        BoxingManager.getInstance().getBoxingConfig().withViewer(viewMode);
+        fragment.startActivityForResult(mIntent, requestCode);
+    }
+
+    /**
+     * same as {@link android.app.Fragment#startActivityForResult(Intent, int, Bundle)}
+     */
+    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
+    public void start(@NonNull android.app.Fragment fragment, int requestCode) {
+        fragment.startActivityForResult(mIntent, requestCode);
+    }
+
+    /**
+     * use to start raw image viewer.
+     *
+     * @param viewMode {@link BoxingConfig.ViewMode}
+     */
+    @TargetApi(Build.VERSION_CODES.HONEYCOMB)
+    public void start(@NonNull android.app.Fragment fragment, int requestCode, BoxingConfig.ViewMode viewMode) {
+        BoxingManager.getInstance().getBoxingConfig().withViewer(viewMode);
+        fragment.startActivityForResult(mIntent, requestCode);
+    }
+
+    /**
+     * set up a subclass of {@link AbsBoxingViewFragment} without a {@link AbsBoxingActivity}.
+     *
+     * @param fragment         subclass of {@link AbsBoxingViewFragment}
+     * @param onFinishListener a listener fo media result
+     */
+    public void setupFragment(@NonNull AbsBoxingViewFragment fragment, OnBoxingFinishListener onFinishListener) {
+        fragment.setPresenter(new PickerPresenter(fragment));
+        fragment.setOnFinishListener(onFinishListener);
+    }
+
+    /**
+     * work with a subclass of {@link AbsBoxingViewFragment} without a {@link AbsBoxingActivity}.
+     */
+    public interface OnBoxingFinishListener {
+
+        /**
+         * live with {@link com.bilibili.boxing.presenter.PickerContract.View#onFinish(List)}
+         *
+         * @param medias the selection of medias.
+         */
+        void onBoxingFinish(Intent intent, @Nullable List<BaseMedia> medias);
+    }
+
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/BoxingCrop.java

@@ -0,0 +1,74 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing;
+
+import android.app.Activity;
+import android.content.Intent;
+import android.net.Uri;
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+
+import com.bilibili.boxing.loader.IBoxingCrop;
+import com.bilibili.boxing.model.config.BoxingCropOption;
+
+/**
+ * A loader holding {@link IBoxingCrop} to crop images.
+ *
+ * @author ChenSL
+ */
+public class BoxingCrop {
+    private static final BoxingCrop INSTANCE = new BoxingCrop();
+    private IBoxingCrop mCrop;
+
+    private BoxingCrop() {
+    }
+
+    public static BoxingCrop getInstance() {
+        return INSTANCE;
+    }
+
+    public void init(@NonNull IBoxingCrop loader) {
+        this.mCrop = loader;
+    }
+
+    public void onStartCrop(Activity activity, Fragment fragment, @NonNull BoxingCropOption cropConfig,
+                            @NonNull String path, int requestCode) {
+        if (ensureLoader()) {
+            throw new IllegalStateException("init method should be called first");
+        }
+        if (cropConfig == null) {
+            throw new IllegalArgumentException("crop config is null.");
+        }
+        mCrop.onStartCrop(activity, fragment, cropConfig, path, requestCode);
+    }
+
+    public Uri onCropFinish(int resultCode, Intent data) {
+        if (ensureLoader()) {
+            throw new IllegalStateException("init method should be called first");
+        }
+        return mCrop.onCropFinish(resultCode, data);
+    }
+
+    public IBoxingCrop getCrop() {
+        return mCrop;
+    }
+
+    private boolean ensureLoader() {
+        return mCrop == null;
+    }
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/BoxingMediaLoader.java

@@ -0,0 +1,67 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing;
+
+import androidx.annotation.NonNull;
+import android.widget.ImageView;
+
+import com.bilibili.boxing.loader.IBoxingCallback;
+import com.bilibili.boxing.loader.IBoxingMediaLoader;
+
+/**
+ * A loader holding {@link IBoxingMediaLoader} to displayThumbnail medias.
+ *
+ * @author ChenSL
+ */
+public class BoxingMediaLoader {
+    private static final BoxingMediaLoader INSTANCE = new BoxingMediaLoader();
+    private IBoxingMediaLoader mLoader;
+
+    private BoxingMediaLoader() {
+    }
+
+    public static BoxingMediaLoader getInstance() {
+        return INSTANCE;
+    }
+
+    public void init(@NonNull IBoxingMediaLoader loader) {
+        this.mLoader = loader;
+    }
+
+    public void displayThumbnail(@NonNull ImageView img, @NonNull String path, int width, int height) {
+        if (ensureLoader()) {
+            throw new IllegalStateException("init method should be called first");
+        }
+        mLoader.displayThumbnail(img, path, width, height);
+    }
+
+    public void displayRaw(@NonNull ImageView img, @NonNull String path, int width, int height, IBoxingCallback callback) {
+        if (ensureLoader()) {
+            throw new IllegalStateException("init method should be called first");
+        }
+        mLoader.displayRaw(img, path, width, height, callback);
+    }
+
+    public IBoxingMediaLoader getLoader() {
+        return mLoader;
+    }
+
+    private boolean ensureLoader() {
+        return mLoader == null;
+    }
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/loader/IBoxingCallback.java

@@ -0,0 +1,36 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.loader;
+
+/**
+ * Simple callback only cares about success/fail.
+ *
+ * @author ChenSL
+ */
+public interface IBoxingCallback {
+
+    /**
+     * Successfully handle a task;
+     */
+    void onSuccess();
+
+    /**
+     * Error happened when running a task;
+     */
+    void onFail(Throwable t);
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/loader/IBoxingCrop.java

@@ -0,0 +1,55 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.loader;
+
+import android.content.Context;
+import android.content.Intent;
+import android.net.Uri;
+
+import com.bilibili.boxing.model.config.BoxingCropOption;
+
+import androidx.annotation.NonNull;
+import androidx.fragment.app.Fragment;
+
+/**
+ * Cropping interface.
+ *
+ * @author ChenSL
+ */
+public interface IBoxingCrop {
+
+    /***
+     * start crop operation.
+     *
+     * @param cropConfig  {@link BoxingCropOption}
+     * @param path        the absolute path of media.
+     * @param requestCode request code for the crop.
+     */
+    void onStartCrop(Context context, Fragment fragment, @NonNull BoxingCropOption cropConfig,
+                     @NonNull String path, int requestCode);
+
+
+    /**
+     * get the result of cropping.
+     *
+     * @param resultCode the code in {@link android.app.Activity#onActivityResult(int, int, Intent)}
+     * @param data       the data intent
+     * @return the cropped image uri.
+     */
+    Uri onCropFinish(int resultCode, Intent data);
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/loader/IBoxingMediaLoader.java

@@ -0,0 +1,50 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.loader;
+
+import android.widget.ImageView;
+
+import androidx.annotation.NonNull;
+
+/**
+ * Define how media display.
+ *
+ * @author ChenSL
+ */
+public interface IBoxingMediaLoader {
+    /**
+     * display thumbnail images for a ImageView.
+     *
+     * @param img     the display ImageView. Through ImageView.getTag(R.string.boxing_app_name) to get the absolute path of the exact path to display.
+     * @param absPath the absolute path to display, may be out of date when fast scrolling.
+     * @param width   the resize with for the image.
+     * @param height  the resize height for the image.
+     */
+    void displayThumbnail(@NonNull ImageView img, @NonNull String absPath, int width, int height);
+
+    /**
+     * display raw images for a ImageView, need more work to do.
+     *
+     * @param img      the display ImageView.Through ImageView.getTag(R.string.boxing_app_name) to get the absolute path of the exact path to display.
+     * @param absPath  the absolute path to display, may be out of date when fast scrolling.
+     * @param width the expected width, 0 means the raw width.
+     * @param height the expected height, 0 means the raw height.
+     * @param callback the callback for the load result.
+     */
+    void displayRaw(@NonNull ImageView img, @NonNull String absPath, int width, int height, IBoxingCallback callback);
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/model/BoxingBuilderConfig.java

@@ -0,0 +1,35 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.model;
+
+/**
+ * Marks for building and running
+ *
+ * @author ChenSL
+ */
+public class BoxingBuilderConfig {
+    /**
+     * mark for debug
+     */
+    public static final boolean DEBUG = false;
+
+    /**
+     * mark for unit testing
+     */
+    public static final boolean TESTING = false;
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/model/BoxingManager.java

@@ -0,0 +1,80 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.model;
+
+import android.content.ContentResolver;
+import androidx.annotation.NonNull;
+
+import com.bilibili.boxing.model.callback.IAlbumTaskCallback;
+import com.bilibili.boxing.model.callback.IMediaTaskCallback;
+import com.bilibili.boxing.model.config.BoxingConfig;
+import com.bilibili.boxing.model.task.IMediaTask;
+import com.bilibili.boxing.model.task.impl.AlbumTask;
+import com.bilibili.boxing.model.task.impl.ImageTask;
+import com.bilibili.boxing.model.task.impl.VideoTask;
+import com.bilibili.boxing.utils.BoxingExecutor;
+
+/**
+ * The Manager to load {@link IMediaTask} and {@link AlbumTask}, holding {@link BoxingConfig}.
+ *
+ * @author ChenSL
+ */
+public class BoxingManager {
+    private static final BoxingManager INSTANCE = new BoxingManager();
+
+    private BoxingConfig mConfig;
+
+    private BoxingManager() {
+    }
+
+    public static BoxingManager getInstance() {
+        return INSTANCE;
+    }
+
+    public void setBoxingConfig(BoxingConfig config) {
+        mConfig = config;
+    }
+
+    public BoxingConfig getBoxingConfig() {
+        return mConfig;
+    }
+
+    public void loadMedia(@NonNull final ContentResolver cr, final int page,
+                          final String id, @NonNull final IMediaTaskCallback callback) {
+        final IMediaTask task = mConfig.isVideoMode() ? new VideoTask() : new ImageTask();
+        BoxingExecutor.getInstance().runWorker(new Runnable() {
+            @Override
+            public void run() {
+                task.load(cr, page, id, callback);
+            }
+        });
+
+    }
+
+    public void loadAlbum(@NonNull final ContentResolver cr, @NonNull final IAlbumTaskCallback callback) {
+        BoxingExecutor.getInstance().runWorker(new Runnable() {
+
+            @Override
+            public void run() {
+                new AlbumTask().start(cr, callback);
+            }
+        });
+
+    }
+
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/model/callback/IAlbumTaskCallback.java

@@ -0,0 +1,41 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.model.callback;
+
+
+import com.bilibili.boxing.model.entity.AlbumEntity;
+
+import java.util.List;
+
+import androidx.annotation.Nullable;
+
+/**
+ * A callback for load album.
+ *
+ * @author ChenSL
+ */
+public interface IAlbumTaskCallback {
+
+    /**
+     * get all album in database
+     *
+     * @param list album list
+     */
+    void postAlbumList(@Nullable List<AlbumEntity> list);
+
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/model/callback/IMediaTaskCallback.java

@@ -0,0 +1,48 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.model.callback;
+
+
+import com.bilibili.boxing.model.entity.BaseMedia;
+
+import java.util.List;
+
+import androidx.annotation.Nullable;
+
+/**
+ * A callback to load {@link BaseMedia}.
+ *
+ * @author ChenSL
+ */
+public interface IMediaTaskCallback<T extends BaseMedia> {
+    /**
+     * get a page of medias in a album
+     *
+     * @param medias page of medias
+     * @param count  the count for the photo in album
+     */
+    void postMedia(@Nullable List<T> medias, int count);
+
+    /**
+     * judge the path needing filer
+     *
+     * @param path photo path
+     * @return true:be filter
+     */
+    boolean needFilter(String path);
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/model/config/BoxingConfig.java

@@ -0,0 +1,319 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.model.config;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import androidx.annotation.DrawableRes;
+
+/**
+ * The pick config.<br/>
+ * 1.{@link Mode} is necessary. <br/>
+ * 2.specify functions: camera, gif, paging. <br/>
+ * calling {@link #needCamera(int)} to displayThumbnail a camera icon. <br/>
+ * calling {@link #needGif()} to displayThumbnail gif photos. <br/>
+ * calling {@link #needPaging(boolean)} to create load medias page by page, by default is true.
+ *
+ * @author ChenSL
+ */
+public class BoxingConfig implements Parcelable {
+    public static final int DEFAULT_SELECTED_COUNT = 9;
+
+    private Mode mMode = Mode.SINGLE_IMG;
+    private ViewMode mViewMode = ViewMode.PREVIEW;
+    private BoxingCropOption mCropOption;
+
+    private int mMediaPlaceHolderRes;
+    private int mMediaCheckedRes;
+    private int mMediaUnCheckedRes;
+    private int mAlbumPlaceHolderRes;
+    private int mVideoDurationRes;
+    private int mCameraRes;
+
+    private boolean mNeedCamera;
+    private boolean mNeedGif;
+    private boolean mNeedPaging = true;
+
+    private int mMaxCount = DEFAULT_SELECTED_COUNT;
+
+    public enum Mode {
+        SINGLE_IMG, MULTI_IMG, VIDEO
+    }
+
+    public enum ViewMode {
+        PREVIEW, EDIT, PRE_EDIT
+    }
+
+    public BoxingConfig() {
+    }
+
+    public BoxingConfig(Mode mode) {
+        this.mMode = mode;
+    }
+
+    public boolean isNeedCamera() {
+        return mNeedCamera;
+    }
+
+    public boolean isNeedPaging() {
+        return mNeedPaging;
+    }
+
+    public Mode getMode() {
+        return mMode;
+    }
+
+    public ViewMode getViewMode() {
+        return mViewMode;
+    }
+
+    public BoxingCropOption getCropOption() {
+        return mCropOption;
+    }
+
+    /**
+     * get the max count set by {@link #withMaxCount(int)}, otherwise return 9.
+     */
+    public int getMaxCount() {
+        if (mMaxCount > 0) {
+            return mMaxCount;
+        }
+        return DEFAULT_SELECTED_COUNT;
+    }
+
+    /**
+     * get the image drawable resource by {@link BoxingConfig#withMediaPlaceHolderRes(int)}.
+     * @return >0, set a valid drawable resource; otherwise without a placeholder.
+     */
+    public @DrawableRes
+    int getMediaPlaceHolderRes() {
+        return mMediaPlaceHolderRes;
+    }
+
+    /**
+     * get the media checked drawable resource by {@link BoxingConfig#withMediaCheckedRes(int)}.
+     * @return >0, set a valid drawable resource; otherwise without a placeholder.
+     */
+    public @DrawableRes  int getMediaCheckedRes() {
+        return mMediaCheckedRes;
+    }
+
+    /**
+     * get the media unchecked drawable resource by {@link BoxingConfig#withMediaUncheckedRes(int)} (int)}.
+     * @return >0, set a valid drawable resource; otherwise without a placeholder.
+     */
+    public @DrawableRes int getMediaUnCheckedRes() {
+        return mMediaUnCheckedRes;
+    }
+
+    /**
+     * get the media unchecked drawable resource by {@link BoxingConfig#withMediaPlaceHolderRes(int)}.
+     * @return >0, set a valid drawable resource; otherwise without a placeholder.
+     */
+    public @DrawableRes int getCameraRes() {
+        return mCameraRes;
+    }
+
+    /**
+     * get the album drawable resource by {@link BoxingConfig#withAlbumPlaceHolderRes(int)}.
+     * @return >0, set a valid drawable resource; otherwise without a placeholder.
+     */
+    public @DrawableRes int getAlbumPlaceHolderRes() {
+        return mAlbumPlaceHolderRes;
+    }
+
+    /**
+     * get the video drawable resource by {@link BoxingConfig#withVideoDurationRes(int)}.
+     * @return >0, set a valid drawable resource; otherwise without a placeholder.
+     */
+    public @DrawableRes int getVideoDurationRes() {
+        return mVideoDurationRes;
+    }
+
+    public boolean isNeedLoading() {
+        return mViewMode == ViewMode.EDIT;
+    }
+
+    public boolean isNeedEdit() {
+        return mViewMode != ViewMode.PREVIEW;
+    }
+
+    public boolean isVideoMode() {
+        return mMode == Mode.VIDEO;
+    }
+
+    public boolean isMultiImageMode() {
+        return mMode == Mode.MULTI_IMG;
+    }
+
+    public boolean isSingleImageMode() {
+        return mMode == Mode.SINGLE_IMG;
+    }
+
+    public boolean isNeedGif() {
+        return mNeedGif;
+    }
+
+    /**
+     * call this means gif is needed.
+     */
+    public BoxingConfig needGif() {
+        this.mNeedGif = true;
+        return this;
+    }
+
+    /**
+     * set the camera res.
+     */
+    public BoxingConfig needCamera(@DrawableRes int cameraRes) {
+        this.mCameraRes = cameraRes;
+        this.mNeedCamera = true;
+        return this;
+    }
+
+    /**
+     * call this means paging is needed,by default is true.
+     */
+    public BoxingConfig needPaging(boolean needPaging) {
+        this.mNeedPaging = needPaging;
+        return this;
+    }
+
+    public BoxingConfig withViewer(ViewMode viewMode) {
+        this.mViewMode = viewMode;
+        return this;
+    }
+
+    public BoxingConfig withCropOption(BoxingCropOption cropOption) {
+        this.mCropOption = cropOption;
+        return this;
+    }
+
+    /**
+     * set the max count of selected medias in {@link Mode#MULTI_IMG}
+     * @param count max count
+     */
+    public BoxingConfig withMaxCount(int count) {
+        if (count < 1) {
+            return this;
+        }
+        this.mMaxCount = count;
+        return this;
+    }
+
+    /**
+     * set the image placeholder, default 0
+     */
+    public BoxingConfig withMediaPlaceHolderRes(@DrawableRes int mediaPlaceHolderRes) {
+        this.mMediaPlaceHolderRes = mediaPlaceHolderRes;
+        return this;
+    }
+
+    /**
+     * set the image placeholder, otherwise use default drawable.
+     */
+    public BoxingConfig withMediaCheckedRes(@DrawableRes int mediaCheckedResRes) {
+        this.mMediaCheckedRes = mediaCheckedResRes;
+        return this;
+    }
+
+    /**
+     * set the image placeholder, otherwise use default drawable.
+     */
+    public BoxingConfig withMediaUncheckedRes(@DrawableRes int mediaUncheckedRes) {
+        this.mMediaUnCheckedRes = mediaUncheckedRes;
+        return this;
+    }
+
+    /**
+     * set the album placeholder, default 0
+     */
+    public BoxingConfig withAlbumPlaceHolderRes(@DrawableRes int albumPlaceHolderRes) {
+        this.mAlbumPlaceHolderRes = albumPlaceHolderRes;
+        return this;
+    }
+
+    /**
+     * set the video duration resource in video mode, default 0
+     */
+    public BoxingConfig withVideoDurationRes(@DrawableRes int videoDurationRes) {
+        this.mVideoDurationRes = videoDurationRes;
+        return this;
+    }
+
+    @Override
+    public String toString() {
+        return "BoxingConfig{" +
+                "mMode=" + mMode +
+                ", mViewMode=" + mViewMode +
+                '}';
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeInt(this.mMode == null ? -1 : this.mMode.ordinal());
+        dest.writeInt(this.mViewMode == null ? -1 : this.mViewMode.ordinal());
+        dest.writeParcelable(this.mCropOption, flags);
+        dest.writeInt(this.mMediaPlaceHolderRes);
+        dest.writeInt(this.mMediaCheckedRes);
+        dest.writeInt(this.mMediaUnCheckedRes);
+        dest.writeInt(this.mAlbumPlaceHolderRes);
+        dest.writeInt(this.mVideoDurationRes);
+        dest.writeInt(this.mCameraRes);
+        dest.writeByte(this.mNeedCamera ? (byte) 1 : (byte) 0);
+        dest.writeByte(this.mNeedGif ? (byte) 1 : (byte) 0);
+        dest.writeByte(this.mNeedPaging ? (byte) 1 : (byte) 0);
+        dest.writeInt(this.mMaxCount);
+    }
+
+    protected BoxingConfig(Parcel in) {
+        int tmpMMode = in.readInt();
+        this.mMode = tmpMMode == -1 ? null : Mode.values()[tmpMMode];
+        int tmpMViewMode = in.readInt();
+        this.mViewMode = tmpMViewMode == -1 ? null : ViewMode.values()[tmpMViewMode];
+        this.mCropOption = in.readParcelable(BoxingCropOption.class.getClassLoader());
+        this.mMediaPlaceHolderRes = in.readInt();
+        this.mMediaCheckedRes = in.readInt();
+        this.mMediaUnCheckedRes = in.readInt();
+        this.mAlbumPlaceHolderRes = in.readInt();
+        this.mVideoDurationRes = in.readInt();
+        this.mCameraRes = in.readInt();
+        this.mNeedCamera = in.readByte() != 0;
+        this.mNeedGif = in.readByte() != 0;
+        this.mNeedPaging = in.readByte() != 0;
+        this.mMaxCount = in.readInt();
+    }
+
+    public static final Creator<BoxingConfig> CREATOR = new Creator<BoxingConfig>() {
+        @Override
+        public BoxingConfig createFromParcel(Parcel source) {
+            return new BoxingConfig(source);
+        }
+
+        @Override
+        public BoxingConfig[] newArray(int size) {
+            return new BoxingConfig[size];
+        }
+    };
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/model/config/BoxingCropOption.java

@@ -0,0 +1,118 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.model.config;
+
+import android.net.Uri;
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import androidx.annotation.NonNull;
+
+/**
+ * The cropping config, a cropped photo uri is needed at least.
+ *
+ * @author ChenSL
+ */
+public class BoxingCropOption implements Parcelable {
+    private Uri mDestination;
+    private float mAspectRatioX;
+    private float mAspectRatioY;
+    private int mMaxWidth;
+    private int mMaxHeight;
+
+    public BoxingCropOption(Uri destination) {
+        this.mDestination = destination;
+    }
+
+    public static BoxingCropOption with(@NonNull Uri destination) {
+        return new BoxingCropOption(destination);
+    }
+
+    public BoxingCropOption aspectRatio(float x, float y) {
+        this.mAspectRatioX = x;
+        this.mAspectRatioY = y;
+        return this;
+    }
+
+    public BoxingCropOption useSourceImageAspectRatio() {
+        this.mAspectRatioX = 0;
+        this.mAspectRatioY = 0;
+        return this;
+    }
+
+    public BoxingCropOption withMaxResultSize(int width, int height) {
+        this.mMaxWidth = width;
+        this.mMaxHeight = height;
+        return this;
+    }
+
+
+    public float getAspectRatioX() {
+        return mAspectRatioX;
+    }
+
+    public float getAspectRatioY() {
+        return mAspectRatioY;
+    }
+
+    public int getMaxHeight() {
+        return mMaxHeight;
+    }
+
+    public int getMaxWidth() {
+        return mMaxWidth;
+    }
+
+    public Uri getDestination() {
+        return mDestination;
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeParcelable(this.mDestination, flags);
+        dest.writeFloat(this.mAspectRatioX);
+        dest.writeFloat(this.mAspectRatioY);
+        dest.writeInt(this.mMaxWidth);
+        dest.writeInt(this.mMaxHeight);
+    }
+
+    BoxingCropOption(Parcel in) {
+        this.mDestination = in.readParcelable(Uri.class.getClassLoader());
+        this.mAspectRatioX = in.readFloat();
+        this.mAspectRatioY = in.readFloat();
+        this.mMaxWidth = in.readInt();
+        this.mMaxHeight = in.readInt();
+    }
+
+    public static final Creator<BoxingCropOption> CREATOR = new Creator<BoxingCropOption>() {
+        @Override
+        public BoxingCropOption createFromParcel(Parcel source) {
+            return new BoxingCropOption(source);
+        }
+
+        @Override
+        public BoxingCropOption[] newArray(int size) {
+            return new BoxingCropOption[size];
+        }
+    };
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/model/entity/AlbumEntity.java

@@ -0,0 +1,102 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.model.entity;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import java.util.ArrayList;
+import java.util.List;
+
+
+/**
+ * An entity for album.
+ *
+ * @author ChenSL
+ */
+public class AlbumEntity implements Parcelable {
+    public static final String DEFAULT_NAME = "";
+
+    public int mCount;
+    public boolean mIsSelected;
+
+    public String mBucketId;
+    public String mBucketName;
+    public List<BaseMedia> mImageList;
+
+    public AlbumEntity() {
+        mCount = 0;
+        mImageList = new ArrayList<>();
+        mIsSelected = false;
+    }
+
+    public static AlbumEntity createDefaultAlbum() {
+        AlbumEntity result = new AlbumEntity();
+        result.mBucketId = DEFAULT_NAME;
+        result.mIsSelected = true;
+        return result;
+    }
+
+    public boolean hasImages() {
+        return mImageList != null && mImageList.size() > 0;
+    }
+
+    @Override
+    public String toString() {
+        return "AlbumEntity{" +
+                "mCount=" + mCount +
+                ", mBucketName='" + mBucketName + '\'' +
+                ", mImageList=" + mImageList +
+                '}';
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeString(this.mBucketId);
+        dest.writeInt(this.mCount);
+        dest.writeString(this.mBucketName);
+        dest.writeList(this.mImageList);
+        dest.writeByte(this.mIsSelected ? (byte) 1 : (byte) 0);
+    }
+
+    protected AlbumEntity(Parcel in) {
+        this.mBucketId = in.readString();
+        this.mCount = in.readInt();
+        this.mBucketName = in.readString();
+        this.mImageList = new ArrayList<>();
+        in.readList(this.mImageList, BaseMedia.class.getClassLoader());
+        this.mIsSelected = in.readByte() != 0;
+    }
+
+    public static final Creator<AlbumEntity> CREATOR = new Creator<AlbumEntity>() {
+        @Override
+        public AlbumEntity createFromParcel(Parcel source) {
+            return new AlbumEntity(source);
+        }
+
+        @Override
+        public AlbumEntity[] newArray(int size) {
+            return new AlbumEntity[size];
+        }
+    };
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/model/entity/BaseMedia.java

@@ -0,0 +1,94 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.model.entity;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+/**
+ * The base entity for media.
+ *
+ * @author ChenSL
+ */
+public abstract class BaseMedia implements Parcelable {
+    protected enum TYPE {
+        IMAGE, VIDEO
+    }
+
+    protected String mPath;
+    protected String mId;
+    protected String mSize;
+
+    public BaseMedia() {
+    }
+
+    public BaseMedia(String id, String path) {
+        mId = id;
+        mPath = path;
+    }
+
+    public abstract TYPE getType();
+
+    public String getId() {
+        return mId;
+    }
+
+    public long getSize() {
+        try {
+            long result = Long.parseLong(mSize);
+            return result > 0 ? result : 0;
+        }catch (NumberFormatException size) {
+            return 0;
+        }
+    }
+
+    public void setId(String id) {
+        mId = id;
+    }
+
+    public void setSize(String size) {
+        mSize = size;
+    }
+
+    public String getPath(){
+        return mPath;
+    }
+
+    public void setPath(String path) {
+        mPath = path;
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        dest.writeString(this.mPath);
+        dest.writeString(this.mId);
+        dest.writeString(this.mSize);
+    }
+
+    protected BaseMedia(Parcel in) {
+        this.mPath = in.readString();
+        this.mId = in.readString();
+        this.mSize = in.readString();
+    }
+
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/model/entity/impl/ImageMedia.java

@@ -0,0 +1,340 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.model.entity.impl;
+
+
+import android.content.ContentResolver;
+import android.content.ContentValues;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.provider.MediaStore;
+import android.text.TextUtils;
+
+import com.bilibili.boxing.model.entity.BaseMedia;
+import com.bilibili.boxing.utils.BoxingExecutor;
+import com.bilibili.boxing.utils.BoxingExifHelper;
+import com.bilibili.boxing.utils.BoxingFileHelper;
+import com.bilibili.boxing.utils.CompressTask;
+import com.bilibili.boxing.utils.ImageCompressor;
+
+import java.io.File;
+
+import androidx.annotation.NonNull;
+
+
+/**
+ * Id and absolute path is necessary.Builder Mode can be used too.
+ * compress image through {@link #compress(ImageCompressor)}.
+ *
+ * @author ChenSL
+ */
+public class ImageMedia extends BaseMedia implements Parcelable {
+    private static final long MAX_GIF_SIZE = 1024 * 1024L;
+    private static final long MAX_IMAGE_SIZE = 1024 * 1024L;
+
+    private boolean mIsSelected;
+    private String mThumbnailPath;
+    private String mCompressPath;
+    private int mHeight;
+    private int mWidth;
+    private IMAGE_TYPE mImageType;
+    private String mMimeType;
+
+    public enum IMAGE_TYPE {
+        PNG, JPG, GIF
+    }
+
+    public ImageMedia(String id, String imagePath) {
+        super(id, imagePath);
+    }
+
+    public ImageMedia(@NonNull File file) {
+        this.mId = String.valueOf(System.currentTimeMillis());
+        this.mPath = file.getAbsolutePath();
+        this.mSize = String.valueOf(file.length());
+        this.mIsSelected = true;
+    }
+
+    public ImageMedia(Builder builder) {
+        super(builder.mId, builder.mImagePath);
+        this.mThumbnailPath = builder.mThumbnailPath;
+        this.mSize = builder.mSize;
+        this.mHeight = builder.mHeight;
+        this.mIsSelected = builder.mIsSelected;
+        this.mWidth = builder.mWidth;
+        this.mMimeType = builder.mMimeType;
+        this.mImageType = getImageTypeByMime(builder.mMimeType);
+    }
+
+    @Override
+    public TYPE getType() {
+        return TYPE.IMAGE;
+    }
+
+    public boolean isSelected() {
+        return mIsSelected;
+    }
+
+    public void setSelected(boolean selected) {
+        mIsSelected = selected;
+    }
+
+    public boolean isGifOverSize() {
+        return isGif() && getSize() > MAX_GIF_SIZE;
+    }
+
+    public boolean isGif() {
+        return getImageType() == IMAGE_TYPE.GIF;
+    }
+
+    public boolean compress(ImageCompressor imageCompressor) {
+        return CompressTask.compress(imageCompressor, this, MAX_IMAGE_SIZE);
+    }
+
+    /**
+     * @param maxSize the proximate max size for compression
+     * @return may be a little bigger than expected for performance.
+     */
+    public boolean compress(ImageCompressor imageCompressor, long maxSize) {
+        return CompressTask.compress(imageCompressor, this, maxSize);
+    }
+
+    /**
+     * get mime type displayed in database.
+     *
+     * @return "image/gif" or "image/jpeg".
+     */
+    public String getMimeType() {
+        if (getImageType() == IMAGE_TYPE.GIF) {
+            return "image/gif";
+        } else if (getImageType() == IMAGE_TYPE.JPG) {
+            return "image/jpeg";
+        }
+        return "image/jpeg";
+    }
+
+    public IMAGE_TYPE getImageType() {
+        return mImageType;
+    }
+
+    private IMAGE_TYPE getImageTypeByMime(String mimeType) {
+        if (!TextUtils.isEmpty(mimeType)) {
+            if ("image/gif".equals(mimeType)) {
+                return IMAGE_TYPE.GIF;
+            } else if ("image/png".equals(mimeType)) {
+                return IMAGE_TYPE.PNG;
+            } else {
+                return IMAGE_TYPE.JPG;
+            }
+        }
+        return IMAGE_TYPE.PNG;
+    }
+
+    public void setImageType(IMAGE_TYPE imageType) {
+        mImageType = imageType;
+    }
+
+    public String getId() {
+        return mId;
+    }
+
+    public int getHeight() {
+        return mHeight;
+    }
+
+    public int getWidth() {
+        return mWidth;
+    }
+
+    public String getCompressPath() {
+        return mCompressPath;
+    }
+
+    public void removeExif() {
+        BoxingExifHelper.removeExif(getPath());
+    }
+
+    /**
+     * save image to MediaStore.
+     */
+    public void saveMediaStore(final ContentResolver cr) {
+        BoxingExecutor.getInstance().runWorker(new Runnable() {
+            @Override
+            public void run() {
+                if (cr != null && !TextUtils.isEmpty(getId())) {
+                    ContentValues values = new ContentValues();
+                    values.put(MediaStore.Images.Media.TITLE, getId());
+                    values.put(MediaStore.Images.Media.MIME_TYPE, getMimeType());
+                    values.put(MediaStore.Images.Media.DATA, getPath());
+                    cr.insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
+                }
+            }
+        });
+
+    }
+
+    public void setCompressPath(String compressPath) {
+        mCompressPath = compressPath;
+    }
+
+    public void setSize(String size) {
+        mSize = size;
+    }
+
+    public void setHeight(int height) {
+        mHeight = height;
+    }
+
+    public void setWidth(int width) {
+        mWidth = width;
+    }
+
+    @Override
+    public String toString() {
+        return "ImageMedia{" +
+                ", mThumbnailPath='" + mThumbnailPath + '\'' +
+                ", mCompressPath='" + mCompressPath + '\'' +
+                ", mSize='" + mSize + '\'' +
+                ", mHeight=" + mHeight +
+                ", mWidth=" + mWidth;
+    }
+
+    @Override
+    public int hashCode() {
+        int result = mId.hashCode();
+        result = 31 * result + (mPath != null ? mPath.hashCode() : 0);
+        return result;
+    }
+
+    @NonNull
+    public String getThumbnailPath() {
+        if (BoxingFileHelper.isFileValid(mThumbnailPath)) {
+            return mThumbnailPath;
+        } else if (BoxingFileHelper.isFileValid(mCompressPath)) {
+            return mCompressPath;
+        }
+        return mPath;
+    }
+
+
+    @Override
+    public boolean equals(Object obj) {
+        if (this == obj) {
+            return true;
+        }
+        if (obj == null) {
+            return false;
+        }
+        if (getClass() != obj.getClass()) {
+            return false;
+        }
+        final ImageMedia other = (ImageMedia) obj;
+        return !(TextUtils.isEmpty(mPath) || TextUtils.isEmpty(other.mPath)) && this.mPath.equals(other.mPath);
+    }
+
+    public static class Builder {
+        private String mId;
+        private String mImagePath;
+        private boolean mIsSelected;
+        private String mThumbnailPath;
+        private String mSize;
+        private int mHeight;
+        private int mWidth;
+        private String mMimeType;
+
+        public Builder(String id, String path) {
+            this.mId = id;
+            this.mImagePath = path;
+        }
+
+        public Builder setSelected(boolean selected) {
+            this.mIsSelected = selected;
+            return this;
+        }
+
+        public Builder setThumbnailPath(String thumbnailPath) {
+            mThumbnailPath = thumbnailPath;
+            return this;
+        }
+
+        public Builder setHeight(int height) {
+            mHeight = height;
+            return this;
+        }
+
+        public Builder setWidth(int width) {
+            mWidth = width;
+            return this;
+        }
+
+        public Builder setMimeType(String mimeType) {
+            mMimeType = mimeType;
+            return this;
+        }
+
+        public Builder setSize(String size) {
+            this.mSize = size;
+            return this;
+        }
+
+        public ImageMedia build() {
+            return new ImageMedia(this);
+        }
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        super.writeToParcel(dest, flags);
+        dest.writeByte(this.mIsSelected ? (byte) 1 : (byte) 0);
+        dest.writeString(this.mThumbnailPath);
+        dest.writeString(this.mCompressPath);
+        dest.writeInt(this.mHeight);
+        dest.writeInt(this.mWidth);
+        dest.writeInt(this.mImageType == null ? -1 : this.mImageType.ordinal());
+        dest.writeString(this.mMimeType);
+    }
+
+    protected ImageMedia(Parcel in) {
+        super(in);
+        this.mIsSelected = in.readByte() != 0;
+        this.mThumbnailPath = in.readString();
+        this.mCompressPath = in.readString();
+        this.mHeight = in.readInt();
+        this.mWidth = in.readInt();
+        int tmpMImageType = in.readInt();
+        this.mImageType = tmpMImageType == -1 ? null : IMAGE_TYPE.values()[tmpMImageType];
+        this.mMimeType = in.readString();
+    }
+
+    public static final Creator<ImageMedia> CREATOR = new Creator<ImageMedia>() {
+        @Override
+        public ImageMedia createFromParcel(Parcel source) {
+            return new ImageMedia(source);
+        }
+
+        @Override
+        public ImageMedia[] newArray(int size) {
+            return new ImageMedia[size];
+        }
+    };
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/model/entity/impl/VideoMedia.java

@@ -0,0 +1,196 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.model.entity.impl;
+
+import android.os.Parcel;
+import android.os.Parcelable;
+
+import com.bilibili.boxing.model.entity.BaseMedia;
+
+import java.util.Locale;
+
+
+/**
+ * Entity represent a Video.
+ *
+ * @author ChenSL
+ */
+public class VideoMedia extends BaseMedia {
+    private static final long MB = 1024 * 1024;
+    
+    private String mTitle;
+    private String mDuration;
+    private String mDateTaken;
+    private String mMimeType;
+
+    private VideoMedia() {
+    }
+
+    @Override
+    public TYPE getType() {
+        return TYPE.VIDEO;
+    }
+
+    public VideoMedia(Builder builder) {
+        super(builder.mId, builder.mPath);
+        this.mTitle = builder.mTitle;
+        this.mDuration = builder.mDuration;
+        this.mSize = builder.mSize;
+        this.mDateTaken = builder.mDateTaken;
+        this.mMimeType = builder.mMimeType;
+    }
+
+    public String getDuration() {
+        try {
+            long duration = Long.parseLong(mDuration);
+            return formatTimeWithMin(duration);
+        } catch (NumberFormatException e) {
+            return "0:00";
+        }
+    }
+
+    public String formatTimeWithMin(long duration) {
+        if (duration <= 0) {
+            return String.format(Locale.US, "%02d:%02d", 0, 0);
+        }
+        long totalSeconds = duration / 1000;
+
+        long seconds = totalSeconds % 60;
+        long minutes = (totalSeconds / 60) % 60;
+        long hours = totalSeconds / 3600;
+
+        if (hours > 0) {
+            return String.format(Locale.US, "%02d:%02d", hours * 60 + minutes,
+                    seconds);
+        } else {
+            return String.format(Locale.US, "%02d:%02d", minutes, seconds);
+        }
+    }
+
+    public void setTitle(String title) {
+        mTitle = title;
+    }
+
+    public void setDuration(String duration) {
+        mDuration = duration;
+    }
+
+    public String getTitle() {
+        return mTitle;
+    }
+
+    public String getSizeByUnit() {
+        double size = getSize();
+        if (size == 0) {
+            return "0K";
+        }
+        if (size >= MB) {
+            double sizeInM = size / MB;
+            return String.format(Locale.getDefault(), "%.1f", sizeInM) + "M";
+        }
+        double sizeInK = size / 1024;
+        return String.format(Locale.getDefault(), "%.1f", sizeInK) + "K";
+    }
+
+    public String getDateTaken() {
+        return mDateTaken;
+    }
+
+    public String getMimeType() {
+        return mMimeType;
+    }
+
+    public static class Builder {
+        private String mId;
+        private String mTitle;
+        private String mPath;
+        private String mDuration;
+        private String mSize;
+        private String mDateTaken;
+        private String mMimeType;
+
+        public Builder(String id, String path) {
+            this.mId = id;
+            this.mPath = path;
+        }
+
+        public Builder setTitle(String title) {
+            this.mTitle = title;
+            return this;
+        }
+
+        public Builder setDuration(String duration) {
+            this.mDuration = duration;
+            return this;
+        }
+
+        public Builder setSize(String size) {
+            this.mSize = size;
+            return this;
+        }
+
+        public Builder setDataTaken(String dateTaken) {
+            this.mDateTaken = dateTaken;
+            return this;
+        }
+
+        public Builder setMimeType(String type) {
+            this.mMimeType = type;
+            return this;
+        }
+
+
+        public VideoMedia build() {
+            return new VideoMedia(this);
+        }
+    }
+
+    @Override
+    public int describeContents() {
+        return 0;
+    }
+
+    @Override
+    public void writeToParcel(Parcel dest, int flags) {
+        super.writeToParcel(dest, flags);
+        dest.writeString(this.mTitle);
+        dest.writeString(this.mDuration);
+        dest.writeString(this.mDateTaken);
+        dest.writeString(this.mMimeType);
+    }
+
+    protected VideoMedia(Parcel in) {
+        super(in);
+        this.mTitle = in.readString();
+        this.mDuration = in.readString();
+        this.mDateTaken = in.readString();
+        this.mMimeType = in.readString();
+    }
+
+    public static final Parcelable.Creator<VideoMedia> CREATOR = new Parcelable.Creator<VideoMedia>() {
+        @Override
+        public VideoMedia createFromParcel(Parcel source) {
+            return new VideoMedia(source);
+        }
+
+        @Override
+        public VideoMedia[] newArray(int size) {
+            return new VideoMedia[size];
+        }
+    };
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/model/task/IMediaTask.java

@@ -0,0 +1,36 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.model.task;
+
+import android.content.ContentResolver;
+
+import com.bilibili.boxing.model.callback.IMediaTaskCallback;
+import com.bilibili.boxing.model.entity.BaseMedia;
+
+
+/**
+ * The interface to load {@link BaseMedia}.
+ *
+ * @author ChenSL
+ */
+public interface IMediaTask<T extends BaseMedia> {
+    int PAGE_LIMIT = 1000;
+
+    void load(ContentResolver cr, int page, String id, IMediaTaskCallback<T> callback);
+
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/model/task/impl/AlbumTask.java

@@ -0,0 +1,187 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+package com.bilibili.boxing.model.task.impl;
+
+import android.content.ContentResolver;
+import android.database.Cursor;
+import android.provider.MediaStore.Images.Media;
+import android.text.TextUtils;
+
+import com.bilibili.boxing.model.BoxingManager;
+import com.bilibili.boxing.model.callback.IAlbumTaskCallback;
+import com.bilibili.boxing.model.config.BoxingConfig;
+import com.bilibili.boxing.model.entity.AlbumEntity;
+import com.bilibili.boxing.model.entity.impl.ImageMedia;
+import com.bilibili.boxing.utils.BoxingExecutor;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.WorkerThread;
+import androidx.collection.ArrayMap;
+
+/**
+ * A task to load albums.
+ *
+ * @author ChenSL
+ */
+@WorkerThread
+public class AlbumTask {
+    private static final String UNKNOWN_ALBUM_NAME = "unknow";
+    private static final String SELECTION_IMAGE_MIME_TYPE = Media.MIME_TYPE + "=? or " + Media.MIME_TYPE + "=? or " + Media.MIME_TYPE + "=? or " + Media.MIME_TYPE + "=?";
+    private static final String SELECTION_IMAGE_MIME_TYPE_WITHOUT_GIF = Media.MIME_TYPE + "=? or " + Media.MIME_TYPE + "=? or " + Media.MIME_TYPE + "=?";
+    private static final String SELECTION_ID = Media.BUCKET_ID + "=? and (" + SELECTION_IMAGE_MIME_TYPE + " )";
+    private static final String SELECTION_ID_WITHOUT_GIF = Media.BUCKET_ID + "=? and (" + SELECTION_IMAGE_MIME_TYPE_WITHOUT_GIF + " )";
+    private static final String[] SELECTION_ARGS_IMAGE_MIME_TYPE = {"image/jpeg", "image/png", "image/jpg", "image/gif"};
+    private static final String[] SELECTION_ARGS_IMAGE_MIME_TYPE_WITHOUT_GIF = {"image/jpeg", "image/png", "image/jpg"};
+    private int mUnknownAlbumNumber = 1;
+    private Map<String, AlbumEntity> mBucketMap;
+    private AlbumEntity mDefaultAlbum;
+    private BoxingConfig mPickerConfig;
+
+    public AlbumTask() {
+        this.mBucketMap = new ArrayMap<>();
+        this.mDefaultAlbum = AlbumEntity.createDefaultAlbum();
+        this.mPickerConfig = BoxingManager.getInstance().getBoxingConfig();
+    }
+
+    public void start(@NonNull final ContentResolver cr, @NonNull final IAlbumTaskCallback callback) {
+        buildAlbumInfo(cr);
+        getAlbumList(callback);
+    }
+
+    private void buildAlbumInfo(ContentResolver cr) {
+        String[] distinctBucketColumns = new String[]{Media.BUCKET_ID, Media.BUCKET_DISPLAY_NAME};
+        Cursor bucketCursor = null;
+        try {
+            bucketCursor = cr.query(Media.EXTERNAL_CONTENT_URI, distinctBucketColumns, "0==0)" + " GROUP BY (" + Media.BUCKET_ID, null,
+                    Media.DATE_MODIFIED + " desc");
+            if (bucketCursor != null && bucketCursor.moveToFirst()) {
+                do {
+                    String buckId = bucketCursor.getString(bucketCursor.getColumnIndex(Media.BUCKET_ID));
+                    String name = bucketCursor.getString(bucketCursor.getColumnIndex(Media.BUCKET_DISPLAY_NAME));
+                    AlbumEntity album = buildAlbumInfo(name, buckId);
+                    if (!TextUtils.isEmpty(buckId)) {
+                        buildAlbumCover(cr, buckId, album);
+                    }
+                } while (bucketCursor.moveToNext());
+            }
+        } finally {
+            if (bucketCursor != null) {
+                bucketCursor.close();
+            }
+        }
+    }
+
+    /**
+     * get the cover and count
+     *
+     * @param buckId album id
+     */
+    private void buildAlbumCover(ContentResolver cr, String buckId, AlbumEntity album) {
+        String[] photoColumn = new String[]{Media._ID, Media.DATA};
+        boolean isNeedGif = mPickerConfig != null && mPickerConfig.isNeedGif();
+        String selectionId = isNeedGif ? SELECTION_ID : SELECTION_ID_WITHOUT_GIF;
+        String[] args = isNeedGif ? SELECTION_ARGS_IMAGE_MIME_TYPE : SELECTION_ARGS_IMAGE_MIME_TYPE_WITHOUT_GIF;
+        String[] selectionArgs = new String[args.length + 1];
+        selectionArgs[0] = buckId;
+        for (int i = 1; i < selectionArgs.length; i++) {
+            selectionArgs[i] = args[i-1];
+        }
+        Cursor coverCursor = cr.query(Media.EXTERNAL_CONTENT_URI, photoColumn, selectionId,
+                selectionArgs, Media.DATE_MODIFIED + " desc");
+        try {
+            if (coverCursor != null && coverCursor.moveToFirst()) {
+                String picPath = coverCursor.getString(coverCursor.getColumnIndex(Media.DATA));
+                String id = coverCursor.getString(coverCursor.getColumnIndex(Media._ID));
+                album.mCount = coverCursor.getCount();
+                album.mImageList.add(new ImageMedia(id, picPath));
+                if (album.mImageList.size() > 0) {
+                    mBucketMap.put(buckId, album);
+                }
+            }
+        } finally {
+            if (coverCursor != null) {
+                coverCursor.close();
+            }
+        }
+    }
+
+    private void getAlbumList(@NonNull final IAlbumTaskCallback callback) {
+        mDefaultAlbum.mCount = 0;
+        List<AlbumEntity> tmpList = new ArrayList<>();
+        if (mBucketMap == null) {
+            postAlbums(callback, tmpList);
+            return;
+        }
+        for (Map.Entry<String, AlbumEntity> entry : mBucketMap.entrySet()) {
+            tmpList.add(entry.getValue());
+            mDefaultAlbum.mCount += entry.getValue().mCount;
+        }
+        if (tmpList.size() > 0 && tmpList.get(0) != null) {
+            mDefaultAlbum.mImageList = tmpList.get(0).mImageList;
+            tmpList.add(0, mDefaultAlbum);
+        }
+        postAlbums(callback, tmpList);
+        clear();
+    }
+
+    private void postAlbums(@NonNull final IAlbumTaskCallback callback, final List<AlbumEntity> result) {
+        BoxingExecutor.getInstance().runUI(new Runnable() {
+            @Override
+            public void run() {
+                callback.postAlbumList(result);
+            }
+        });
+    }
+
+    @NonNull
+    private AlbumEntity buildAlbumInfo(String bucketName, String bucketId) {
+        AlbumEntity album = null;
+        if (!TextUtils.isEmpty(bucketId)) {
+            album = mBucketMap.get(bucketId);
+        }
+        if (album == null) {
+            album = new AlbumEntity();
+            if (!TextUtils.isEmpty(bucketId)) {
+                album.mBucketId = bucketId;
+            } else {
+                album.mBucketId = String.valueOf(mUnknownAlbumNumber);
+                mUnknownAlbumNumber++;
+            }
+            if (!TextUtils.isEmpty(bucketName)) {
+                album.mBucketName = bucketName;
+            } else {
+                album.mBucketName = UNKNOWN_ALBUM_NAME;
+                mUnknownAlbumNumber++;
+            }
+            if (album.mImageList.size() > 0) {
+                mBucketMap.put(bucketId, album);
+            }
+        }
+        return album;
+    }
+
+    private void clear() {
+        if (mBucketMap != null) {
+            mBucketMap.clear();
+        }
+    }
+
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/model/task/impl/ImageTask.java

@@ -0,0 +1,231 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.model.task.impl;
+
+import android.content.ContentResolver;
+import android.database.Cursor;
+import android.os.Build;
+import android.provider.MediaStore.Images;
+import android.text.TextUtils;
+
+import com.bilibili.boxing.model.BoxingManager;
+import com.bilibili.boxing.model.callback.IMediaTaskCallback;
+import com.bilibili.boxing.model.config.BoxingConfig;
+import com.bilibili.boxing.model.entity.impl.ImageMedia;
+import com.bilibili.boxing.model.task.IMediaTask;
+import com.bilibili.boxing.utils.BoxingExecutor;
+import com.bilibili.boxing.utils.BoxingLog;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.WorkerThread;
+import androidx.collection.ArrayMap;
+
+/**
+ * A Task to load photos.
+ *
+ * @author ChenSL
+ */
+@WorkerThread
+public class ImageTask implements IMediaTask<ImageMedia> {
+    private static final String CONJUNCTION_SQL = "=? or";
+    private static final String SELECTION_IMAGE_MIME_TYPE = Images.Media.MIME_TYPE + CONJUNCTION_SQL + " " + Images.Media.MIME_TYPE + CONJUNCTION_SQL + " " + Images.Media.MIME_TYPE + CONJUNCTION_SQL + " " + Images.Media.MIME_TYPE + "=?";
+    private static final String SELECTION_IMAGE_MIME_TYPE_WITHOUT_GIF = Images.Media.MIME_TYPE + CONJUNCTION_SQL + " " + Images.Media.MIME_TYPE + CONJUNCTION_SQL + " " + Images.Media.MIME_TYPE + "=?";
+    private static final String SELECTION_ID = Images.Media.BUCKET_ID + "=? and (" + SELECTION_IMAGE_MIME_TYPE + " )";
+    private static final String SELECTION_ID_WITHOUT_GIF = Images.Media.BUCKET_ID + "=? and (" + SELECTION_IMAGE_MIME_TYPE_WITHOUT_GIF + " )";
+
+    private static final String IMAGE_JPEG = "image/jpeg";
+    private static final String IMAGE_PNG = "image/png";
+    private static final String IMAGE_JPG = "image/jpg";
+    private static final String IMAGE_GIF = "image/gif";
+    private static final String[] SELECTION_ARGS_IMAGE_MIME_TYPE = {IMAGE_JPEG, IMAGE_PNG, IMAGE_JPG, IMAGE_GIF};
+    private static final String[] SELECTION_ARGS_IMAGE_MIME_TYPE_WITHOUT_GIF = {IMAGE_JPEG, IMAGE_PNG, IMAGE_JPG};
+
+    private static final String DESC = " desc";
+
+    private BoxingConfig mPickerConfig;
+    private Map<String, String> mThumbnailMap;
+
+    public ImageTask() {
+        this.mThumbnailMap = new ArrayMap<>();
+        this.mPickerConfig = BoxingManager.getInstance().getBoxingConfig();
+    }
+
+    @Override
+    public void load(@NonNull final ContentResolver cr, final int page, final String id,
+                     @NonNull final IMediaTaskCallback<ImageMedia> callback) {
+        buildThumbnail(cr);
+        buildAlbumList(cr, id, page, callback);
+    }
+
+    private void buildThumbnail(ContentResolver cr) {
+        String[] projection = {Images.Thumbnails.IMAGE_ID, Images.Thumbnails.DATA};
+        queryThumbnails(cr, projection);
+    }
+
+    private void queryThumbnails(ContentResolver cr, String[] projection) {
+        Cursor cur = null;
+        try {
+            cur = Images.Thumbnails.queryMiniThumbnails(cr, Images.Thumbnails.EXTERNAL_CONTENT_URI,
+                    Images.Thumbnails.MINI_KIND, projection);
+            if (cur != null && cur.moveToFirst()) {
+                do {
+                    String imageId = cur.getString(cur.getColumnIndex(Images.Thumbnails.IMAGE_ID));
+                    String imagePath = cur.getString(cur.getColumnIndex(Images.Thumbnails.DATA));
+                    mThumbnailMap.put(imageId, imagePath);
+                } while (cur.moveToNext() && !cur.isLast());
+            }
+        } finally {
+            if (cur != null) {
+                cur.close();
+            }
+        }
+    }
+
+    private List<ImageMedia> buildAlbumList(ContentResolver cr, String bucketId, int page,
+                                            @NonNull final IMediaTaskCallback<ImageMedia> callback) {
+        List<ImageMedia> result = new ArrayList<>();
+        String columns[] = getColumns();
+        Cursor cursor = null;
+        try {
+            boolean isDefaultAlbum = TextUtils.isEmpty(bucketId);
+            boolean isNeedPaging = mPickerConfig == null || mPickerConfig.isNeedPaging();
+            boolean isNeedGif = mPickerConfig != null && mPickerConfig.isNeedGif();
+            int totalCount = getTotalCount(cr, bucketId, columns, isDefaultAlbum, isNeedGif);
+
+            String imageMimeType = isNeedGif ? SELECTION_IMAGE_MIME_TYPE : SELECTION_IMAGE_MIME_TYPE_WITHOUT_GIF;
+            String[] args = isNeedGif ? SELECTION_ARGS_IMAGE_MIME_TYPE : SELECTION_ARGS_IMAGE_MIME_TYPE_WITHOUT_GIF;
+            String order = isNeedPaging ? Images.Media.DATE_MODIFIED + DESC + " LIMIT "
+                    + page * IMediaTask.PAGE_LIMIT + " , " + IMediaTask.PAGE_LIMIT : Images.Media.DATE_MODIFIED + DESC;
+            String selectionId = isNeedGif ? SELECTION_ID : SELECTION_ID_WITHOUT_GIF;
+            cursor = query(cr, bucketId, columns, isDefaultAlbum, isNeedGif, imageMimeType, args, order, selectionId);
+            addItem(totalCount, result, cursor, callback);
+        } finally {
+            if (cursor != null) {
+                cursor.close();
+            }
+        }
+        return result;
+    }
+
+    private void addItem(final int allCount, final List<ImageMedia> result, Cursor cursor, @NonNull final IMediaTaskCallback<ImageMedia> callback) {
+        if (cursor != null && cursor.moveToFirst()) {
+            do {
+                String picPath = cursor.getString(cursor.getColumnIndex(Images.Media.DATA));
+                if (callback.needFilter(picPath)) {
+                    BoxingLog.d("path:" + picPath + " has been filter");
+                } else {
+                    String id = cursor.getString(cursor.getColumnIndex(Images.Media._ID));
+                    String size = cursor.getString(cursor.getColumnIndex(Images.Media.SIZE));
+                    String mimeType = cursor.getString(cursor.getColumnIndex(Images.Media.MIME_TYPE));
+                    int width = 0;
+                    int height = 0;
+                    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
+                        width = cursor.getInt(cursor.getColumnIndex(Images.Media.WIDTH));
+                        height = cursor.getInt(cursor.getColumnIndex(Images.Media.HEIGHT));
+                    }
+                    ImageMedia imageItem = new ImageMedia.Builder(id, picPath).setThumbnailPath(mThumbnailMap.get(id))
+                            .setSize(size).setMimeType(mimeType).setHeight(height).setWidth(width).build();
+                    if (!result.contains(imageItem)) {
+                        result.add(imageItem);
+                    }
+                }
+            } while (!cursor.isLast() && cursor.moveToNext());
+            postMedias(result, allCount, callback);
+        } else {
+            postMedias(result, 0, callback);
+        }
+        clear();
+    }
+
+    private void postMedias(final List<ImageMedia> result, final int count, @NonNull final IMediaTaskCallback<ImageMedia> callback) {
+        BoxingExecutor.getInstance().runUI(new Runnable() {
+            @Override
+            public void run() {
+                callback.postMedia(result, count);
+            }
+        });
+    }
+
+    private Cursor query(ContentResolver cr, String bucketId, String[] columns, boolean isDefaultAlbum,
+                         boolean isNeedGif, String imageMimeType, String[] args, String order, String selectionId) {
+        Cursor resultCursor;
+        if (isDefaultAlbum) {
+            resultCursor = cr.query(Images.Media.EXTERNAL_CONTENT_URI, columns, imageMimeType,
+                    args, order);
+        } else {
+            if (isNeedGif) {
+                resultCursor = cr.query(Images.Media.EXTERNAL_CONTENT_URI, columns, selectionId,
+                        new String[]{bucketId, args[0], args[1], args[2], args[3]}, order);
+            } else {
+                resultCursor = cr.query(Images.Media.EXTERNAL_CONTENT_URI, columns, selectionId,
+                        new String[]{bucketId, args[0], args[1], args[2]}, order);
+            }
+        }
+        return resultCursor;
+    }
+
+    @NonNull
+    private String[] getColumns() {
+        String[] columns;
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN) {
+            columns = new String[]{Images.Media._ID, Images.Media.DATA, Images.Media.SIZE, Images.Media.MIME_TYPE, Images.Media.WIDTH, Images.Media.HEIGHT};
+        } else {
+            columns = new String[]{Images.Media._ID, Images.Media.DATA, Images.Media.SIZE, Images.Media.MIME_TYPE};
+        }
+        return columns;
+    }
+
+    private int getTotalCount(ContentResolver cr, String bucketId, String[] columns, boolean isDefaultAlbum, boolean isNeedGif) {
+        Cursor allCursor = null;
+        int result = 0;
+        try {
+            if (isDefaultAlbum) {
+                allCursor = cr.query(Images.Media.EXTERNAL_CONTENT_URI, columns,
+                        SELECTION_IMAGE_MIME_TYPE, SELECTION_ARGS_IMAGE_MIME_TYPE,
+                        Images.Media.DATE_MODIFIED + DESC);
+            } else {
+                if (isNeedGif) {
+                    allCursor = cr.query(Images.Media.EXTERNAL_CONTENT_URI, columns, SELECTION_ID,
+                            new String[]{bucketId, IMAGE_JPEG, IMAGE_PNG, IMAGE_JPG, IMAGE_GIF}, Images.Media.DATE_MODIFIED + DESC);
+                } else {
+                    allCursor = cr.query(Images.Media.EXTERNAL_CONTENT_URI, columns, SELECTION_ID_WITHOUT_GIF,
+                            new String[]{bucketId, IMAGE_JPEG, IMAGE_PNG, IMAGE_JPG}, Images.Media.DATE_MODIFIED + DESC);
+                }
+            }
+            if (allCursor != null) {
+                result = allCursor.getCount();
+            }
+        } finally {
+            if (allCursor != null) {
+                allCursor.close();
+            }
+        }
+        return result;
+    }
+
+    private void clear() {
+        if (mThumbnailMap != null) {
+            mThumbnailMap.clear();
+        }
+    }
+
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/model/task/impl/VideoTask.java

@@ -0,0 +1,102 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.model.task.impl;
+
+import android.content.ContentResolver;
+import android.database.Cursor;
+import android.provider.MediaStore;
+
+import com.bilibili.boxing.model.callback.IMediaTaskCallback;
+import com.bilibili.boxing.model.entity.impl.VideoMedia;
+import com.bilibili.boxing.model.task.IMediaTask;
+import com.bilibili.boxing.utils.BoxingExecutor;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.WorkerThread;
+
+/**
+ * A Task to load {@link VideoMedia} in database.
+ *
+ * @author ChenSL
+ */
+@WorkerThread
+public class VideoTask implements IMediaTask<VideoMedia> {
+
+    private final static String[] MEDIA_COL = new String[]{
+            MediaStore.Video.Media.DATA,
+            MediaStore.Video.Media._ID,
+            MediaStore.Video.Media.TITLE,
+            MediaStore.Video.Media.MIME_TYPE,
+            MediaStore.Video.Media.SIZE,
+            MediaStore.Video.Media.DATE_TAKEN,
+            MediaStore.Video.Media.DURATION
+    };
+
+
+    @Override
+    public void load(final ContentResolver cr, final int page, String id, final IMediaTaskCallback<VideoMedia> callback) {
+        loadVideos(cr, page, callback);
+    }
+
+    private void loadVideos(ContentResolver cr, int page, @NonNull final IMediaTaskCallback<VideoMedia> callback) {
+        final List<VideoMedia> videoMedias = new ArrayList<>();
+        final Cursor cursor = cr.query(MediaStore.Video.Media.EXTERNAL_CONTENT_URI, MEDIA_COL, null, null,
+                MediaStore.Images.Media.DATE_MODIFIED + " desc" + " LIMIT " + page * IMediaTask.PAGE_LIMIT + " , " + IMediaTask.PAGE_LIMIT);
+        try {
+            int count = 0;
+            if (cursor != null && cursor.moveToFirst()) {
+                count = cursor.getCount();
+                do {
+                    String data = cursor.getString(cursor.getColumnIndex(MediaStore.Video.Media.DATA));
+                    String id = cursor.getString(cursor.getColumnIndex(MediaStore.Video.Media._ID));
+                    String title = cursor.getString(cursor.getColumnIndex(MediaStore.Video.Media.TITLE));
+                    String type = cursor.getString(cursor.getColumnIndex(MediaStore.Video.Media.MIME_TYPE));
+                    String size = cursor.getString(cursor.getColumnIndex(MediaStore.Video.Media.SIZE));
+                    String date = cursor.getString(cursor.getColumnIndex(MediaStore.Video.Media.DATE_TAKEN));
+                    String duration = cursor.getString(cursor.getColumnIndex(MediaStore.Video.Media.DURATION));
+                    VideoMedia video = new VideoMedia.Builder(id, data).setTitle(title).setDuration(duration)
+                            .setSize(size).setDataTaken(date).setMimeType(type).build();
+                    videoMedias.add(video);
+
+                } while (!cursor.isLast() && cursor.moveToNext());
+                postMedias(callback, videoMedias, count);
+            } else {
+                postMedias(callback, videoMedias, 0);
+            }
+        } finally {
+            if (cursor != null) {
+                cursor.close();
+            }
+        }
+
+    }
+
+    private void postMedias(@NonNull final IMediaTaskCallback<VideoMedia> callback,
+                            final List<VideoMedia> videoMedias, final int count) {
+        BoxingExecutor.getInstance().runUI(new Runnable() {
+            @Override
+            public void run() {
+                callback.postMedia(videoMedias, count);
+            }
+        });
+    }
+
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/presenter/PickerContract.java

@@ -0,0 +1,132 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.presenter;
+
+import android.content.ContentResolver;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import com.bilibili.boxing.model.config.BoxingConfig;
+import com.bilibili.boxing.model.entity.AlbumEntity;
+import com.bilibili.boxing.model.entity.BaseMedia;
+
+import java.util.List;
+
+/**
+ * This specifies the contract between the view and the presenter.
+ *
+ * @author ChenSL
+ */
+public interface PickerContract {
+
+    /**
+     * define the functions of the view, interacting with presenter
+     */
+    interface View {
+        /**
+         * set the presenter attaching to the view
+         */
+        void setPresenter(@NonNull Presenter presenter);
+
+        /**
+         * show a list  the {@link BaseMedia} in the view
+         */
+        void showMedia(@Nullable List<BaseMedia> medias, int allCount);
+
+        /**
+         * show all the {@link AlbumEntity} in the view
+         */
+        void showAlbum(@Nullable List<AlbumEntity> albums);
+
+        /**
+         * get the {@link ContentResolver} in the view
+         */
+        @NonNull
+        ContentResolver getAppCr();
+
+        /**
+         * call when the view should be finished or the process is finished
+         *
+         * @param medias the selection of medias.
+         */
+        void onFinish(@NonNull List<BaseMedia> medias);
+
+        /**
+         * clear all the {@link BaseMedia} in the view
+         */
+        void clearMedia();
+
+        /**
+         * start crop the {@link BaseMedia} in the single media mode
+         */
+        void startCrop(@NonNull BaseMedia media, int requestCode);
+
+        /**
+         * set or update the config.
+         *
+         * @param config {@link BoxingConfig}
+         */
+        void setPickerConfig(BoxingConfig config);
+
+    }
+
+    /**
+     * define the function of presenter, to control the module to load data and to tell view to displayRaw the data
+     */
+    interface Presenter {
+        /**
+         * load the specify data from {@link ContentResolver}
+         *
+         * @param page    the page need to load
+         * @param albumId album albumId
+         */
+        void loadMedias(int page, String albumId);
+
+        /**
+         * load all the album from {@link ContentResolver}
+         */
+        void loadAlbums();
+
+        /**
+         * destroy the presenter and set the view null
+         */
+        void destroy();
+
+        /**
+         * has more data to load
+         *
+         * @return true, have more
+         */
+        boolean hasNextPage();
+
+        boolean canLoadNextPage();
+
+        /**
+         * load next page
+         */
+        void onLoadNextPage();
+
+        /**
+         * Determine the selected allMedias according to mSelectedMedias
+         *
+         * @param allMedias      all medias
+         * @param selectedMedias the medias to be selected
+         */
+        void checkSelectedMedia(List<BaseMedia> allMedias, List<BaseMedia> selectedMedias);
+    }
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/presenter/PickerPresenter.java

@@ -0,0 +1,178 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.presenter;
+
+import android.content.ContentResolver;
+import android.text.TextUtils;
+
+import com.bilibili.boxing.model.BoxingManager;
+import com.bilibili.boxing.model.callback.IAlbumTaskCallback;
+import com.bilibili.boxing.model.callback.IMediaTaskCallback;
+import com.bilibili.boxing.model.entity.AlbumEntity;
+import com.bilibili.boxing.model.entity.BaseMedia;
+import com.bilibili.boxing.model.entity.impl.ImageMedia;
+import com.bilibili.boxing.model.task.IMediaTask;
+
+import java.io.File;
+import java.lang.ref.WeakReference;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+
+/**
+ * A presenter implement {@link com.bilibili.boxing.presenter.PickerContract.Presenter}.
+ *
+ * @author ChenSL
+ */
+public class PickerPresenter implements PickerContract.Presenter {
+    private PickerContract.View mTasksView;
+
+    private int mTotalPage;
+    private int mCurrentPage;
+    private boolean mIsLoadingNextPage;
+
+    private String mCurrentAlbumId;
+    private LoadMediaCallback mLoadMediaCallback;
+    private LoadAlbumCallback mLoadAlbumCallback;
+
+    public PickerPresenter(PickerContract.View tasksView) {
+        this.mTasksView = tasksView;
+        this.mTasksView.setPresenter(this);
+        this.mLoadMediaCallback = new LoadMediaCallback(this);
+        this.mLoadAlbumCallback = new LoadAlbumCallback(this);
+    }
+
+    @Override
+    public void loadMedias(int page, String albumId) {
+        mCurrentAlbumId = albumId;
+        if (page == 0) {
+            mTasksView.clearMedia();
+            mCurrentPage = 0;
+        }
+        ContentResolver cr = mTasksView.getAppCr();
+        BoxingManager.getInstance().loadMedia(cr, page, albumId, mLoadMediaCallback);
+    }
+
+    @Override
+    public void loadAlbums() {
+        ContentResolver cr = mTasksView.getAppCr();
+        BoxingManager.getInstance().loadAlbum(cr, mLoadAlbumCallback);
+    }
+
+    @Override
+    public void destroy() {
+        mTasksView = null;
+    }
+
+    @Override
+    public boolean hasNextPage() {
+        return mCurrentPage < mTotalPage;
+    }
+
+    @Override
+    public boolean canLoadNextPage() {
+        return !mIsLoadingNextPage;
+    }
+
+    @Override
+    public void onLoadNextPage() {
+        mCurrentPage++;
+        mIsLoadingNextPage = true;
+        loadMedias(mCurrentPage, mCurrentAlbumId);
+    }
+
+    @Override
+    public void checkSelectedMedia(List<BaseMedia> allMedias, List<BaseMedia> selectedMedias) {
+        if (allMedias == null || allMedias.size() == 0) {
+            return;
+        }
+        Map<String, ImageMedia> map = new HashMap<>(allMedias.size());
+        for (BaseMedia allMedia : allMedias) {
+            if (!(allMedia instanceof ImageMedia)) {
+                return;
+            }
+            ImageMedia media = (ImageMedia) allMedia;
+            media.setSelected(false);
+            map.put(media.getPath(), media);
+        }
+        if (selectedMedias == null || selectedMedias.size() < 0) {
+            return;
+        }
+        for (BaseMedia media : selectedMedias) {
+            if (map.containsKey(media.getPath())) {
+                map.get(media.getPath()).setSelected(true);
+            }
+        }
+    }
+
+    private static class LoadMediaCallback implements IMediaTaskCallback<BaseMedia> {
+        private WeakReference<PickerPresenter> mWr;
+
+        LoadMediaCallback(PickerPresenter presenter) {
+            mWr = new WeakReference<>(presenter);
+        }
+
+        private PickerPresenter getPresenter() {
+            return mWr.get();
+        }
+
+        @Override
+        public void postMedia(List<BaseMedia> medias, int count) {
+            PickerPresenter presenter = getPresenter();
+            if (presenter == null) {
+                return;
+            }
+            PickerContract.View view = presenter.mTasksView;
+            if (view != null) {
+                view.showMedia(medias, count);
+            }
+            presenter.mTotalPage = count / IMediaTask.PAGE_LIMIT;
+            presenter.mIsLoadingNextPage = false;
+        }
+
+        @Override
+        public boolean needFilter(String path) {
+            return TextUtils.isEmpty(path) || !(new File(path).exists());
+        }
+    }
+
+    private static class LoadAlbumCallback implements IAlbumTaskCallback {
+        private WeakReference<PickerPresenter> mWr;
+
+        LoadAlbumCallback(PickerPresenter presenter) {
+            mWr = new WeakReference<>(presenter);
+        }
+
+        private PickerPresenter getPresenter() {
+            return mWr.get();
+        }
+
+        @Override
+        public void postAlbumList(List<AlbumEntity> list) {
+            PickerPresenter presenter = getPresenter();
+            if (presenter == null) {
+                return;
+            }
+            if (presenter.mTasksView != null) {
+                presenter.mTasksView.showAlbum(list);
+            }
+        }
+    }
+
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/utils/BoxingExecutor.java

@@ -0,0 +1,91 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.utils;
+
+import android.os.Handler;
+import android.os.Looper;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+
+import java.util.concurrent.Callable;
+import java.util.concurrent.ExecutorService;
+import java.util.concurrent.Executors;
+import java.util.concurrent.FutureTask;
+
+/**
+ * @author ChenSL
+ */
+public class BoxingExecutor {
+    private static final BoxingExecutor INSTANCE = new BoxingExecutor();
+
+    private ExecutorService mExecutorService;
+
+    private BoxingExecutor() {
+    }
+
+    public static BoxingExecutor getInstance() {
+        return INSTANCE;
+    }
+
+    public void runWorker(@NonNull Runnable runnable) {
+        ensureWorkerHandlerNotNull();
+        try {
+            mExecutorService.execute(runnable);
+        } catch (Exception e) {
+            BoxingLog.d("runnable stop running unexpected. " + e.getMessage());
+        }
+    }
+
+    @Nullable
+    public FutureTask<Boolean> runWorker(@NonNull Callable<Boolean> callable) {
+        ensureWorkerHandlerNotNull();
+        FutureTask<Boolean> task = null;
+        try {
+            task = new FutureTask<>(callable);
+            mExecutorService.submit(task);
+            return task;
+        } catch (Exception e) {
+            BoxingLog.d("callable stop running unexpected. " + e.getMessage());
+        }
+        return task;
+    }
+
+    public void runUI(@NonNull Runnable runnable) {
+        if (Looper.myLooper() == Looper.getMainLooper()) {
+            runnable.run();
+            return;
+        }
+        Handler handler = ensureUiHandlerNotNull();
+        try {
+            handler.post(runnable);
+        } catch (Exception e) {
+            BoxingLog.d("update UI task fail. " + e.getMessage());
+        }
+    }
+
+    private void ensureWorkerHandlerNotNull() {
+        if (mExecutorService == null) {
+            mExecutorService = Executors.newCachedThreadPool();
+        }
+    }
+
+    private Handler ensureUiHandlerNotNull() {
+        return new Handler(Looper.getMainLooper());
+    }
+
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/utils/BoxingExifHelper.java

@@ -0,0 +1,87 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.utils;
+
+import android.media.ExifInterface;
+import android.os.Build;
+import android.text.TextUtils;
+
+import java.io.IOException;
+
+/**
+ * @author ChenSL
+ */
+
+public class BoxingExifHelper {
+
+    public static void removeExif(String path) {
+        if (!TextUtils.isEmpty(path)) {
+            return;
+        }
+        ExifInterface exifInterface;
+        try {
+            exifInterface = new ExifInterface(path);
+        } catch (IOException ignore) {
+            return;
+        }
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+            exifInterface.setAttribute(ExifInterface.TAG_ARTIST, "");
+            exifInterface.setAttribute(ExifInterface.TAG_RESOLUTION_UNIT, "0");
+            exifInterface.setAttribute(ExifInterface.TAG_DATETIME_ORIGINAL, "");
+            exifInterface.setAttribute(ExifInterface.TAG_MAKER_NOTE, "0");
+        }
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
+            exifInterface.setAttribute(ExifInterface.TAG_DATETIME_DIGITIZED, "");
+        }
+        exifInterface.setAttribute(ExifInterface.TAG_MAKE, "");
+        exifInterface.setAttribute(ExifInterface.TAG_MODEL, "");
+        exifInterface.setAttribute(ExifInterface.TAG_ORIENTATION, "0");
+
+        exifInterface.setAttribute(ExifInterface.TAG_DATETIME, "");
+        exifInterface.setAttribute(ExifInterface.TAG_GPS_LATITUDE, "");
+        exifInterface.setAttribute(ExifInterface.TAG_GPS_LONGITUDE, "");
+
+        exifInterface.setAttribute(ExifInterface.TAG_GPS_LATITUDE, "");
+
+    }
+
+    static int getRotateDegree(String path) {
+        int result = 0;
+        try {
+            ExifInterface exif = new ExifInterface(path);
+            int orientation = exif.getAttributeInt(
+                    ExifInterface.TAG_ORIENTATION,
+                    ExifInterface.ORIENTATION_NORMAL);
+            switch (orientation) {
+                case ExifInterface.ORIENTATION_ROTATE_90:
+                    result = 90;
+                    break;
+                case ExifInterface.ORIENTATION_ROTATE_180:
+                    result = 180;
+                    break;
+                case ExifInterface.ORIENTATION_ROTATE_270:
+                    result = 270;
+                    break;
+            }
+        } catch (IOException ignore) {
+            return 0;
+        }
+        return result;
+    }
+
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/utils/BoxingFileHelper.java

@@ -0,0 +1,103 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.utils;
+
+import android.content.Context;
+import android.os.Environment;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import android.text.TextUtils;
+
+import java.io.File;
+import java.util.concurrent.ExecutionException;
+
+/**
+ * A file helper to make thing easier.
+ *
+ * @author ChenSL
+ */
+public class BoxingFileHelper {
+    public static final String DEFAULT_SUB_DIR = "/bili/boxing";
+
+    public static boolean createFile(String path) throws ExecutionException, InterruptedException {
+        if (TextUtils.isEmpty(path)) {
+            return false;
+        }
+        final File file = new File(path);
+        return file.exists() || file.mkdirs();
+
+    }
+
+    @Nullable
+    public static String getCacheDir(@NonNull Context context) {
+        if (context == null) {
+            return null;
+        }
+        context = context.getApplicationContext();
+        File cacheDir = context.getCacheDir();
+        if (cacheDir == null) {
+            BoxingLog.d("cache dir do not exist.");
+            return null;
+        }
+        String result = cacheDir.getAbsolutePath() + "/boxing";
+        try {
+            BoxingFileHelper.createFile(result);
+        } catch (ExecutionException | InterruptedException e) {
+            BoxingLog.d("cache dir " + result + " not exist");
+            return null;
+        }
+        BoxingLog.d("cache dir is: " + result);
+        return result;
+    }
+
+    @Nullable
+    public static String getBoxingPathInDCIM() {
+        return getExternalDCIM(null);
+    }
+
+    @Nullable
+    public static String getExternalDCIM(String subDir) {
+        if (Environment.MEDIA_MOUNTED.equals(Environment.getExternalStorageState())) {
+            File file = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DCIM);
+            if (file == null) {
+                return null;
+            }
+            String dir = "/bili/boxing";
+            if (!TextUtils.isEmpty(subDir)) {
+                dir = subDir;
+            }
+            String result = file.getAbsolutePath() + dir;
+            BoxingLog.d("external DCIM is: " + result);
+            return result;
+        }
+        BoxingLog.d("external DCIM do not exist.");
+        return null;
+    }
+
+    public static boolean isFileValid(String path) {
+        if (TextUtils.isEmpty(path)) {
+            return false;
+        }
+        File file = new File(path);
+        return isFileValid(file);
+    }
+
+    static boolean isFileValid(File file) {
+        return file != null && file.exists() && file.isFile() && file.length() > 0 && file.canRead();
+    }
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/utils/BoxingLog.java

@@ -0,0 +1,37 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.utils;
+
+import android.util.Log;
+
+import com.bilibili.boxing.model.BoxingBuilderConfig;
+
+/**
+ * Debug log tool.
+ *
+ * @author ChenSL
+ */
+public class BoxingLog {
+    private static final String TAG = "com.bilibili.boxing";
+
+    public static void d(String log) {
+        if (BoxingBuilderConfig.DEBUG && !BoxingBuilderConfig.TESTING) {
+            Log.d(TAG, log);
+        }
+    }
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/utils/CameraPickerHelper.java

@@ -0,0 +1,308 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.utils;
+
+import android.app.Activity;
+import android.content.ActivityNotFoundException;
+import android.content.Context;
+import android.content.Intent;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Matrix;
+import android.hardware.Camera;
+import android.net.Uri;
+import android.os.Build;
+import android.os.Bundle;
+import android.os.Parcel;
+import android.os.Parcelable;
+import android.provider.MediaStore;
+
+import com.bilibili.boxing.AbsBoxingViewFragment;
+
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.util.concurrent.Callable;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.FutureTask;
+
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.core.content.FileProvider;
+import androidx.fragment.app.Fragment;
+
+/**
+ * A helper to start camera.<br/>
+ * used by {@link AbsBoxingViewFragment}
+ *
+ * @author ChenSL
+ */
+public class CameraPickerHelper {
+    private static final int MAX_CAMER_PHOTO_SIZE = 4 * 1024 * 1024;
+    public static final int REQ_CODE_CAMERA = 0x2001;
+    private static final String STATE_SAVED_KEY = "com.bilibili.boxing.utils.CameraPickerHelper.saved_state";
+
+    private String mSourceFilePath;
+    private File mOutputFile;
+    private Callback mCallback;
+
+    public interface Callback {
+        void onFinish(@NonNull CameraPickerHelper helper);
+
+        void onError(@NonNull CameraPickerHelper helper);
+    }
+
+    public CameraPickerHelper(@Nullable Bundle savedInstance) {
+        if (savedInstance != null) {
+            SavedState state = savedInstance.getParcelable(STATE_SAVED_KEY);
+            if (state != null) {
+                mOutputFile = state.mOutputFile;
+                mSourceFilePath = state.mSourceFilePath;
+            }
+        }
+    }
+
+    public void setPickCallback(Callback callback) {
+        this.mCallback = callback;
+    }
+
+    public void onSaveInstanceState(Bundle out) {
+        SavedState state = new SavedState();
+        state.mOutputFile = mOutputFile;
+        state.mSourceFilePath = mSourceFilePath;
+        out.putParcelable(STATE_SAVED_KEY, state);
+    }
+
+    /**
+     * start system camera to take a picture
+     *
+     * @param activity      not null if fragment is null.
+     * @param fragment      not null if activity is null.
+     * @param subFolderPath a folder in external DCIM,must start with "/".
+     */
+    public void startCamera(final Activity activity, final Fragment fragment, final String subFolderPath) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.M || !takePhotoSecure(activity, fragment, subFolderPath)) {
+            FutureTask<Boolean> task = BoxingExecutor.getInstance().runWorker(new Callable<Boolean>() {
+                @Override
+                public Boolean call() throws Exception {
+                    try {
+                        // try...try...try
+                        Camera camera = Camera.open();
+                        camera.release();
+                    } catch (Exception e) {
+                        BoxingLog.d("camera is not available.");
+                        return false;
+                    }
+                    return true;
+                }
+            });
+            try {
+                if (task != null && task.get()) {
+                    startCameraIntent(activity, fragment, subFolderPath, MediaStore.ACTION_IMAGE_CAPTURE, REQ_CODE_CAMERA);
+                } else {
+                    callbackError();
+                }
+            } catch (InterruptedException | ExecutionException ignore) {
+                callbackError();
+            }
+
+        }
+    }
+
+    private boolean takePhotoSecure(Activity activity, Fragment fragment, String subDir) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.JELLY_BEAN_MR1) {
+            try {
+                startCameraIntent(activity, fragment, subDir, MediaStore.ACTION_IMAGE_CAPTURE, REQ_CODE_CAMERA);
+                return true;
+            } catch (ActivityNotFoundException ignore) {
+                return false;
+            }
+        }
+        return false;
+    }
+
+    private void callbackFinish() {
+        if (mCallback != null) {
+            mCallback.onFinish(CameraPickerHelper.this);
+        }
+    }
+
+    private void callbackError() {
+        if (mCallback != null) {
+            mCallback.onError(CameraPickerHelper.this);
+        }
+    }
+
+    private void startActivityForResult(Activity activity, Fragment fragment, final Intent intent, final int reqCodeCamera) throws ActivityNotFoundException {
+        if (fragment == null) {
+            activity.startActivityForResult(intent, reqCodeCamera);
+        } else {
+            fragment.startActivityForResult(intent, reqCodeCamera);
+        }
+    }
+
+    private void startCameraIntent(final Activity activity, final Fragment fragment, String subFolder,
+                                   final String action, final int requestCode) {
+        final String cameraOutDir = BoxingFileHelper.getExternalDCIM(subFolder);
+        try {
+            if (BoxingFileHelper.createFile(cameraOutDir)) {
+                mOutputFile = new File(cameraOutDir, System.currentTimeMillis() + ".jpg");
+                mSourceFilePath = mOutputFile.getPath();
+                Intent intent = new Intent(action);
+                Uri uri = getFileUri(activity.getApplicationContext(), mOutputFile);
+                intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
+                try {
+                    startActivityForResult(activity, fragment, intent, requestCode);
+                } catch (ActivityNotFoundException ignore) {
+                    callbackError();
+                }
+
+            }
+        } catch (ExecutionException | InterruptedException e) {
+            BoxingLog.d("create file" + cameraOutDir + " error.");
+        }
+
+    }
+
+    private Uri getFileUri(@NonNull Context context, @NonNull File file) {
+        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
+            return FileProvider.getUriForFile(context,
+                    context.getApplicationContext().getPackageName() + ".file.provider", mOutputFile);
+        } else {
+            return Uri.fromFile(file);
+        }
+    }
+
+    public String getSourceFilePath() {
+        return mSourceFilePath;
+    }
+
+    /**
+     * deal with the system camera's shot.
+     */
+    public boolean onActivityResult(final int requestCode, final int resultCode) {
+        if (requestCode != REQ_CODE_CAMERA) {
+            return false;
+        }
+        if (resultCode != Activity.RESULT_OK) {
+            callbackError();
+            return false;
+        }
+        FutureTask<Boolean> task = BoxingExecutor.getInstance().runWorker(new Callable<Boolean>() {
+            @Override
+            public Boolean call() throws Exception {
+                return rotateImage(resultCode);
+            }
+        });
+        try {
+            if (task != null && task.get()) {
+                callbackFinish();
+            } else {
+                callbackError();
+            }
+        } catch (InterruptedException | ExecutionException ignore) {
+            callbackError();
+        }
+        return true;
+    }
+
+    private boolean rotateSourceFile(File file) throws IOException {
+        if (file == null || !file.exists()) {
+            return false;
+        }
+        FileOutputStream outputStream = null;
+        Bitmap bitmap = null;
+        Bitmap outBitmap = null;
+        try {
+            int degree = BoxingExifHelper.getRotateDegree(file.getAbsolutePath());
+            if (degree == 0) {
+                return true;
+            }
+            int quality = file.length() >= MAX_CAMER_PHOTO_SIZE ? 90 : 100;
+            Matrix matrix = new Matrix();
+            matrix.postRotate(degree);
+            BitmapFactory.Options options = new BitmapFactory.Options();
+            options.inJustDecodeBounds = false;
+            bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
+            outBitmap = Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, false);
+            outputStream = new FileOutputStream(file);
+            outBitmap.compress(Bitmap.CompressFormat.JPEG, quality, outputStream);
+            outputStream.flush();
+            return true;
+        } finally {
+            if (outputStream != null) {
+                try {
+                    outputStream.close();
+                } catch (IOException e) {
+                    BoxingLog.d("IOException when output stream closing!");
+                }
+            }
+            if (bitmap != null) {
+                bitmap.recycle();
+            }
+            if (outBitmap != null) {
+                outBitmap.recycle();
+            }
+        }
+    }
+
+    private boolean rotateImage(int resultCode) throws IOException {
+        return resultCode == Activity.RESULT_OK && rotateSourceFile(mOutputFile);
+    }
+
+    public void release() {
+        mOutputFile = null;
+    }
+
+    private static class SavedState implements Parcelable {
+        private File mOutputFile;
+        private String mSourceFilePath;
+
+        SavedState() {
+        }
+
+        @Override
+        public int describeContents() {
+            return 0;
+        }
+
+        @Override
+        public void writeToParcel(Parcel dest, int flags) {
+            dest.writeSerializable(this.mOutputFile);
+            dest.writeString(this.mSourceFilePath);
+        }
+
+        SavedState(Parcel in) {
+            this.mOutputFile = (File) in.readSerializable();
+            this.mSourceFilePath = in.readString();
+        }
+
+        public static final Creator<SavedState> CREATOR = new Creator<SavedState>() {
+            @Override
+            public SavedState createFromParcel(Parcel source) {
+                return new SavedState(source);
+            }
+
+            @Override
+            public SavedState[] newArray(int size) {
+                return new SavedState[size];
+            }
+        };
+    }
+
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/utils/CompressTask.java

@@ -0,0 +1,84 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.utils;
+
+import android.content.Context;
+
+import com.bilibili.boxing.model.entity.impl.ImageMedia;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.concurrent.Callable;
+import java.util.concurrent.ExecutionException;
+import java.util.concurrent.FutureTask;
+
+/**
+ * A compress task for {@link ImageMedia}
+ * @author ChenSL
+ */
+public class CompressTask {
+    public static boolean compress(Context context, final ImageMedia image) {
+        return compress(new ImageCompressor(context), image, ImageCompressor.MAX_LIMIT_SIZE_LONG);
+    }
+
+    /**
+     * @param imageCompressor see {@link ImageCompressor}.
+     * @param maxSize the proximate max size for compression
+     * @return may be a little bigger than expected for performance.
+     */
+    public static boolean compress(final ImageCompressor imageCompressor, final ImageMedia image, final long maxSize) {
+        if (imageCompressor == null || image == null || maxSize <= 0) {
+            return false;
+        }
+        FutureTask<Boolean> task = BoxingExecutor.getInstance().runWorker(new Callable<Boolean>() {
+            @Override
+            public Boolean call() throws Exception {
+                final String path = image.getPath();
+                File compressSaveFile = imageCompressor.getCompressOutFile(path);
+                File needCompressFile = new File(path);
+                if (BoxingFileHelper.isFileValid(compressSaveFile)) {
+                    image.setCompressPath(compressSaveFile.getAbsolutePath());
+                    return true;
+                }
+                if (!BoxingFileHelper.isFileValid(needCompressFile)) {
+                    return false;
+                } else if (image.getSize() < maxSize) {
+                    image.setCompressPath(path);
+                    return true;
+                } else {
+                    try {
+                        File result = imageCompressor.compress(needCompressFile, maxSize);
+                        boolean suc = BoxingFileHelper.isFileValid(result);
+                        image.setCompressPath(suc ? result.getAbsolutePath() : null);
+                        return suc;
+                    } catch (IOException | OutOfMemoryError | NullPointerException | IllegalArgumentException e) {
+                        image.setCompressPath(null);
+                        BoxingLog.d("image compress fail!");
+                    }
+                }
+                return false;
+            }
+        });
+        try {
+            return task != null && task.get();
+        } catch (InterruptedException | ExecutionException ignore) {
+            return false;
+        }
+    }
+
+}

lib_media_selector/src/boxing/java/com/bilibili/boxing/utils/ImageCompressor.java

@@ -0,0 +1,351 @@
+/*
+ *  Copyright (C) 2017 Bilibili
+ *
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ *
+ *          http://www.apache.org/licenses/LICENSE-2.0
+ *
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+package com.bilibili.boxing.utils;
+
+import android.content.Context;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
+import android.graphics.Matrix;
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import android.text.TextUtils;
+
+import java.io.ByteArrayOutputStream;
+import java.io.File;
+import java.io.FileOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+import java.io.UnsupportedEncodingException;
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+import java.util.Locale;
+
+
+/**
+ * A compress for image.
+ *
+ * @author ChenSL
+ */
+public class ImageCompressor {
+    public static final long MAX_LIMIT_SIZE_LONG = 1024 * 1024L;
+
+    private static final char HEX_DIGITS[] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F'};
+    private static final int MAX_WIDTH = 3024;
+    private static final int MAX_HEIGHT = 4032;
+    private static final long MAX_LIMIT_SIZE = 300 * 1024L;
+
+    private static final String COMPRESS_FILE_PREFIX = "compress-";
+
+    private File mOutFileFile;
+
+    public ImageCompressor(@NonNull File cachedRootDir) {
+        if (cachedRootDir != null) {
+            mOutFileFile = new File(cachedRootDir.getAbsolutePath() + File.separator + ".compress" + File.separator);
+        }
+    }
+
+    public ImageCompressor(@NonNull Context context) {
+        if (context != null) {
+            String rootDir = BoxingFileHelper.getCacheDir(context);
+            if (TextUtils.isEmpty(rootDir)) {
+                throw new IllegalStateException("the cache dir is null");
+            }
+            mOutFileFile = new File(rootDir + File.separator + ".compress" + File.separator);
+        }
+    }
+
+    public File compress(@NonNull File file) throws IOException, NullPointerException, IllegalArgumentException {
+        return compress(file, MAX_LIMIT_SIZE);
+    }
+
+    /**
+     * @param file file to compress.
+     * @param maxsize the proximate max size for compression, not for the image with large ratio.
+     * @return may be a little bigger than expected for performance.
+     */
+    public File compress(@NonNull File file, long maxsize) throws IOException, NullPointerException, IllegalArgumentException {
+        if (!file.exists()) {
+            throw new IllegalArgumentException("file not found : " + file.getAbsolutePath());
+        }
+        if (!isLegalFile(file)) {
+            throw new IllegalArgumentException("file is not a legal file : " + file.getAbsolutePath());
+        }
+        if (mOutFileFile == null) {
+            throw new NullPointerException("the external cache dir is null");
+        }
+        BitmapFactory.Options checkOptions = new BitmapFactory.Options();
+        checkOptions.inJustDecodeBounds = true;
+        String absPath = file.getAbsolutePath();
+        int angle = BoxingExifHelper.getRotateDegree(absPath);
+        BitmapFactory.decodeFile(absPath, checkOptions);
+
+        if (checkOptions.outWidth <= 0 || checkOptions.outHeight <= 0) {
+            throw new IllegalArgumentException("file is not a legal bitmap with 0 with or 0 height : " + file.getAbsolutePath());
+        }
+        int width = checkOptions.outWidth;
+        int height = checkOptions.outHeight;
+        File outFile = createCompressFile(file);
+        if (outFile == null) {
+            throw new NullPointerException("the compressed file create fail, the compressed path is null.");
+        }
+        if (!isLargeRatio(width, height)) {
+            int[] display = getCompressDisplay(width, height);
+            Bitmap bitmap = compressDisplay(absPath, display[0], display[1]);
+            Bitmap rotatedBitmap = rotatingImage(angle, bitmap);
+            if (bitmap != rotatedBitmap) {
+                bitmap.recycle();
+            }
+            saveBitmap(rotatedBitmap, outFile);
+            rotatedBitmap.recycle();
+            compressQuality(outFile, maxsize, 20);
+        } else {
+            if (checkOptions.outHeight >= MAX_HEIGHT && checkOptions.outWidth >= MAX_WIDTH) {
+                checkOptions.inSampleSize = 2;
+            }
+            checkOptions.inJustDecodeBounds = false;
+            Bitmap originBitmap = BitmapFactory.decodeFile(absPath, checkOptions);
+            Bitmap rotatedBitmap = rotatingImage(angle, originBitmap);
+            if (originBitmap != rotatedBitmap) {
+                originBitmap.recycle();
+            }
+            saveBitmap(originBitmap, outFile);
+            rotatedBitmap.recycle();
+            compressQuality(outFile, MAX_LIMIT_SIZE_LONG, 50);
+        }
+        BoxingLog.d("compress suc: " + outFile.getAbsolutePath());
+        return outFile;
+    }
+
+    private Bitmap rotatingImage(int angle, Bitmap bitmap) {
+        if (angle == 0) {
+            return bitmap;
+        }
+        //rotate image
+        Matrix matrix = new Matrix();
+        matrix.postRotate(angle);
+
+        //create a new image
+        return Bitmap.createBitmap(bitmap, 0, 0, bitmap.getWidth(), bitmap.getHeight(), matrix, true);
+    }
+
+    private void saveBitmap(Bitmap bitmap, File outFile) throws IOException {
+        FileOutputStream fos = new FileOutputStream(outFile);
+        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);
+        try {
+            fos.flush();
+        } finally {
+            try {
+                if (fos != null) {
+                    fos.close();
+                }
+            } catch (IOException e) {
+                BoxingLog.d("IOException when saving a bitmap");
+            }
+        }
+    }
+
+    /**
+     * @param width  must > 0
+     * @param height must > 0
+     */
+    private int[] getCompressDisplay(int width, int height) {
+        int thumbWidth = width % 2 == 1 ? width + 1 : width;
+        int thumbHeight = height % 2 == 1 ? height + 1 : height;
+        int[] results = new int[]{thumbWidth, thumbHeight};
+
+        width = thumbWidth > thumbHeight ? thumbHeight : thumbWidth;
+        height = thumbWidth > thumbHeight ? thumbWidth : thumbHeight;
+        float scale = (float) width / height;
+        if (scale <= 1 && scale >= 0.5625) {
+            if (height < 1664) {
+                thumbWidth = width;
+                thumbHeight = height;
+            } else if (height >= 1664 && height < 4990) {
+                thumbWidth = width / 2;
+                thumbHeight = height / 2;
+            } else if (height >= 4990 && height < 10240) {
+                thumbWidth = width / 4;
+                thumbHeight = height / 4;
+            } else {
+                int multiple = height / 1280 == 0 ? 1 : height / 1280;
+                thumbWidth = width / multiple;
+                thumbHeight = height / multiple;
+            }
+        } else if (scale <= 0.5625 && scale > 0.5) {
+            if (height < 1280) {
+                thumbWidth = width;
+                thumbHeight = height;
+            } else {
+                int multiple = height / 1280 == 0 ? 1 : height / 1280;
+                thumbWidth = width / multiple;
+                thumbHeight = height / multiple;
+            }
+        } else {
+            int multiple = (int) Math.ceil(height / (1280.0 / scale));
+            thumbWidth = width / multiple;
+            thumbHeight = height / multiple;
+        }
+        results[0] = thumbWidth;
+        results[1] = thumbHeight;
+        return results;
+    }
+
+    /**
+     * @param width  must > 0
+     * @param height must > 0
+     */
+    private Bitmap compressDisplay(String imagePath, int width, int height) {
+        BitmapFactory.Options options = new BitmapFactory.Options();
+        options.inJustDecodeBounds = true;
+        BitmapFactory.decodeFile(imagePath, options);
+
+        int outH = options.outHeight;
+        int outW = options.outWidth;
+        int inSampleSize = 1;
+
+        if (outH > height || outW > width) {
+            int halfH = outH / 2;
+            int halfW = outW / 2;
+            while ((halfH / inSampleSize) > height && (halfW / inSampleSize) > width) {
+                inSampleSize *= 2;
+            }
+        }
+
+        options.inSampleSize = inSampleSize;
+
+        options.inJustDecodeBounds = false;
+
+        int heightRatio = (int) Math.ceil(options.outHeight / (float) height);
+        int widthRatio = (int) Math.ceil(options.outWidth / (float) width);
+
+        if (heightRatio > 1 || widthRatio > 1) {
+            if (heightRatio > widthRatio) {
+                options.inSampleSize = heightRatio;
+            } else {
+                options.inSampleSize = widthRatio;
+            }
+        }
+        options.inJustDecodeBounds = false;
+
+        return BitmapFactory.decodeFile(imagePath, options);
+    }
+
+    private void compressQuality(File outFile, long maxSize, int maxQuality) throws IOException {
+        long length = outFile.length();
+        int quality = 90;
+        if (length > maxSize) {
+            ByteArrayOutputStream bos = new ByteArrayOutputStream();
+            BoxingLog.d("source file size : " + outFile.length() + ",path : " + outFile);
+            while (true) {
+                compressPhotoByQuality(outFile, bos, quality);
+                long size = bos.size();
+                BoxingLog.d("compressed file size : " + size);
+                if (quality <= maxQuality) {
+                    break;
+                }
+                if (size < maxSize) {
+                    break;
+                } else {
+                    quality -= 10;
+                    bos.reset();
+                }
+            }
+            OutputStream fos = new FileOutputStream(outFile);
+            bos.writeTo(fos);
+            bos.flush();
+            fos.close();
+            bos.close();
+        }
+    }
+
+    private void compressPhotoByQuality(File file, final OutputStream os, final int quality) throws IOException, OutOfMemoryError {
+        BoxingLog.d("start compress quality... ");
+        BitmapFactory.Options options = new BitmapFactory.Options();
+        options.inPreferredConfig = Bitmap.Config.RGB_565;
+        Bitmap bitmap = BitmapFactory.decodeFile(file.getAbsolutePath(), options);
+        if (bitmap != null) {
+            bitmap.compress(Bitmap.CompressFormat.JPEG, quality, os);
+            bitmap.recycle();
+        } else {
+            throw new NullPointerException("bitmap is null when compress by quality");
+        }
+    }
+
+    private File createCompressFile(File file) throws IOException {
+        File outFile = getCompressOutFile(file);
+        if (!mOutFileFile.exists()) {
+            mOutFileFile.mkdirs();
+        }
+        BoxingLog.d("compress out file : " + outFile);
+        outFile.createNewFile();
+        return outFile;
+    }
+
+    public @Nullable File getCompressOutFile(File file) {
+        String path = getCompressOutFilePath(file);
+        return TextUtils.isEmpty(path) ? null: new File(path);
+    }
+
+    public @Nullable File getCompressOutFile(String filePth) {
+        String path = getCompressOutFilePath(filePth);
+        return TextUtils.isEmpty(path) ? null: new File(path);
+    }
+
+    public @Nullable String getCompressOutFilePath(File file) {
+        return getCompressOutFilePath(file.getAbsolutePath());
+    }
+
+    public @Nullable String getCompressOutFilePath(String filePath) {
+        try {
+            return mOutFileFile + File.separator + COMPRESS_FILE_PREFIX + signMD5(filePath.getBytes("UTF-8")) + ".jpg";
+        } catch (UnsupportedEncodingException e) {
+            return null;
+        }
+    }
+
+    public String signMD5(byte[] source) {
+        try {
+            MessageDigest digest = MessageDigest.getInstance("MD5");
+            return signDigest(source, digest);
+        } catch (NoSuchAlgorithmException e) {
+            BoxingLog.d("have no md5");
+        }
+        return null;
+    }
+
+    private String signDigest(byte[] source, MessageDigest digest) {
+        digest.update(source);
+        byte[] data = digest.digest();
+        int j = data.length;
+        char str[] = new char[j * 2];
+        int k = 0;
+        for (byte byte0 : data) {
+            str[k++] = HEX_DIGITS[byte0 >>> 4 & 0xf];
+            str[k++] = HEX_DIGITS[byte0 & 0xf];
+        }
+        return new String(str).toLowerCase(Locale.getDefault());
+    }
+
+    private boolean isLargeRatio(int width, int height) {
+        return width / height >= 3 || height / width >= 3;
+    }
+
+    private boolean isLegalFile(File file) {
+        return file != null && file.exists() && file.isFile() && file.length() > 0;
+    }
+}

lib_media_selector/src/boxing/res/values/strings.xml

@@ -0,0 +1,20 @@
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<resources>
+
+</resources>

lib_media_selector/src/boxing/res/xml/boxing_file_provider.xml

@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+  ~  Copyright (C) 2017 Bilibili
+  ~
+  ~  Licensed under the Apache License, Version 2.0 (the "License");
+  ~  you may not use this file except in compliance with the License.
+  ~  You may obtain a copy of the License at
+  ~
+  ~          http://www.apache.org/licenses/LICENSE-2.0
+  ~
+  ~  Unless required by applicable law or agreed to in writing, software
+  ~  distributed under the License is distributed on an "AS IS" BASIS,
+  ~  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  ~ See the License for the specific language governing permissions and
+  ~ limitations under the License.
+  ~
+  -->
+
+<paths>
+    <cache-path name="internal" path="boxing" />
+
+    <external-path name="external" path="DCIM/bili/boxing" />
+
+</paths>

lib_media_selector/src/main/AndroidManifest.xml

@@ -1,27 +1,29 @@
-<manifest package="com.ztiany.mediaselector"
-          xmlns:android="http://schemas.android.com/apk/res/android">
+<manifest xmlns:android="http://schemas.android.com/apk/res/android"
+    package="com.ztiany.mediaselector">
 
     <application>
 
         <activity
             android:name="com.yalantis.ucrop.UCropActivity"
             android:screenOrientation="portrait"
-            android:theme="@style/Theme.AppCompat.Light.NoActionBar"/>
+            android:theme="@style/Theme.AppCompat.Light.NoActionBar" />
 
         <activity
-            android:name=".LimitedBoxingActivity"
+            android:name="com.bilibili.boxing_impl.ui.BoxingActivity"
             android:launchMode="singleTop"
             android:screenOrientation="portrait"
-            android:theme="@style/Boxing.AppTheme.NoActionBar">
-        </activity>
+            android:theme="@style/Boxing.AppTheme.NoActionBar" />
 
         <activity
-            android:name=".LimitedBoxingViewActivity"
+            android:name="com.bilibili.boxing_impl.ui.BoxingViewActivity"
             android:launchMode="singleTop"
             android:screenOrientation="portrait"
-            android:theme="@style/Boxing.AppTheme.NoActionBar">
-        </activity>
+            android:theme="@style/Boxing.AppTheme.NoActionBar" />
 
+        <activity
+            android:name="com.bilibili.boxing_impl.ui.BoxingBottomSheetActivity"
+            android:screenOrientation="portrait"
+            android:theme="@style/Boxing.AppTheme.NoActionBar" />
 
     </application>