change MainActivity to waterfall layout

app/src/main/java/com/frank/ffmpeg/activity/EqualizerActivity.kt

@@ -38,7 +38,7 @@ class EqualizerActivity : BaseActivity(), OnSeeBarListener {
     private var mAudioPlayer: AudioPlayer? = null
     private var visualizerView: VisualizerView? = null
     private var equalizerAdapter: EqualizerAdapter? = null
-    private var audioPath = Environment.getExternalStorageDirectory().path + "/boy.mp3"
+    private var audioPath = Environment.getExternalStorageDirectory().path + "/know_play.mp3"
 
     override val layoutId: Int
         get() = R.layout.activity_equalizer

app/src/main/java/com/frank/ffmpeg/activity/MainActivity.kt

@@ -3,8 +3,12 @@ package com.frank.ffmpeg.activity
 import android.content.Intent
 import android.os.Bundle
 import android.view.View
+import androidx.recyclerview.widget.RecyclerView
+import androidx.recyclerview.widget.StaggeredGridLayoutManager
 
 import com.frank.ffmpeg.R
+import com.frank.ffmpeg.adapter.WaterfallAdapter
+import com.frank.ffmpeg.listener.OnItemClickListener
 
 /**
  * The main entrance of all Activity
@@ -18,49 +22,66 @@ class MainActivity : BaseActivity() {
     override fun onCreate(savedInstanceState: Bundle?) {
         super.onCreate(savedInstanceState)
 
-        initViewsWithClick(
-                R.id.btn_audio,
-                R.id.btn_video,
-                R.id.btn_media,
-                R.id.btn_play,
-                R.id.btn_push,
-                R.id.btn_live,
-                R.id.btn_filter,
-                R.id.btn_preview,
-                R.id.btn_probe,
-                R.id.btn_audio_effect
-        )
+        initView()
     }
 
-    override fun onViewClick(view: View) {
+    private fun initView() {
+        val list = listOf(
+                getString(R.string.audio_handle),
+                getString(R.string.video_handle),
+                getString(R.string.media_handle),
+                getString(R.string.video_push),
+                getString(R.string.video_live),
+                getString(R.string.video_filter),
+                getString(R.string.video_preview),
+                getString(R.string.media_probe),
+                getString(R.string.audio_effect))
+
+        val viewWaterfall: RecyclerView = findViewById(R.id.list_main_item)
+        val layoutManager = StaggeredGridLayoutManager(2, StaggeredGridLayoutManager.VERTICAL)
+        viewWaterfall.layoutManager = layoutManager
+
+        val adapter = WaterfallAdapter(list)
+        adapter.setOnItemClickListener(object : OnItemClickListener {
+            override fun onItemClick(position: Int) {
+                doClick(position)
+            }
+        })
+        viewWaterfall.adapter = adapter
+    }
+
+    private fun doClick(pos: Int) {
         val intent = Intent()
-        when (view.id) {
-            R.id.btn_audio//handle audio
+        when (pos) {
+            0 //handle audio
             -> intent.setClass(this@MainActivity, AudioHandleActivity::class.java)
-            R.id.btn_video//handle video
+            1 //handle video
             -> intent.setClass(this@MainActivity, VideoHandleActivity::class.java)
-            R.id.btn_media//handle media
+            2 //handle media
             -> intent.setClass(this@MainActivity, MediaHandleActivity::class.java)
-            R.id.btn_play//media play
-            -> intent.setClass(this@MainActivity, MediaPlayerActivity::class.java)
-            R.id.btn_push//pushing
+            3 //pushing
             -> intent.setClass(this@MainActivity, PushActivity::class.java)
-            R.id.btn_live//realtime living with rtmp stream
+            4 //realtime living with rtmp stream
             -> intent.setClass(this@MainActivity, LiveActivity::class.java)
-            R.id.btn_filter//filter effect
+            5 //filter effect
             -> intent.setClass(this@MainActivity, FilterActivity::class.java)
-            R.id.btn_preview//preview thumbnail
+            6 //preview thumbnail
             -> intent.setClass(this@MainActivity, VideoPreviewActivity::class.java)
-            R.id.btn_probe//probe media format
+            7 //probe media format
             -> intent.setClass(this@MainActivity, ProbeFormatActivity::class.java)
-            R.id.btn_audio_effect//audio effect
+            8 //audio effect
             -> intent.setClass(this@MainActivity, AudioEffectActivity::class.java)
+//            -> intent.setClass(this@MainActivity, MediaPlayerActivity::class.java)
             else -> {
             }
         }
         startActivity(intent)
     }
 
+    override fun onViewClick(view: View) {
+
+    }
+
     override fun onSelectedFile(filePath: String) {
 
     }

app/src/main/java/com/frank/ffmpeg/adapter/WaterfallAdapter.kt

@@ -0,0 +1,72 @@
+package com.frank.ffmpeg.adapter
+
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import androidx.recyclerview.widget.RecyclerView
+import com.frank.ffmpeg.R
+import com.frank.ffmpeg.listener.OnItemClickListener
+import java.util.*
+
+/**
+ * waterfall layout adapter
+ * Created by frank on 2021/9/27.
+ */
+class WaterfallAdapter() : RecyclerView.Adapter<RecyclerView.ViewHolder>() {
+
+    companion object {
+        const val DEFAULT_MARGIN = 5
+    }
+
+    private var itemList: List<String>? = null
+
+    private var heightList: ArrayList<Int>? = null
+
+    private var onItemClickListener: OnItemClickListener? = null
+
+    constructor(itemList: List<String>?) : this() {
+        this.itemList = itemList
+
+        heightList = arrayListOf(itemList!!.size)
+        for (i in itemList.indices) {
+            val height = Random().nextInt(20) + DEFAULT_MARGIN
+            heightList?.add(height)
+        }
+    }
+
+    fun setOnItemClickListener(onItemClickListener: OnItemClickListener) {
+        this.onItemClickListener = onItemClickListener
+    }
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): RecyclerView.ViewHolder {
+        return RandomHolder(LayoutInflater.from(parent.context).inflate(R.layout.item_waterfall ,parent, false))
+    }
+
+    override fun getItemCount(): Int {
+        return itemList?.size ?: 0
+    }
+
+    override fun onBindViewHolder(holder: RecyclerView.ViewHolder, position: Int) {
+        val randomHolder = holder as RandomHolder
+        val layoutParams:ViewGroup.MarginLayoutParams =
+                randomHolder.txtComponent.layoutParams as ViewGroup.MarginLayoutParams
+        var margin = DEFAULT_MARGIN
+        if (heightList!![position] > DEFAULT_MARGIN) margin = heightList!![position]
+        layoutParams.topMargin = margin
+        layoutParams.bottomMargin = margin
+        randomHolder.txtComponent.layoutParams = layoutParams
+
+        randomHolder.txtComponent.text = itemList!![position]
+        if (onItemClickListener != null) {
+            randomHolder.txtComponent.setOnClickListener {
+                onItemClickListener!!.onItemClick(randomHolder.absoluteAdapterPosition)
+            }
+        }
+    }
+
+    private inner class RandomHolder internal constructor(itemView: View) : RecyclerView.ViewHolder(itemView) {
+        internal val txtComponent :TextView = itemView.findViewById(R.id.txt_component)
+    }
+
+}

app/src/main/res/layout/activity_main.xml

@@ -1,89 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
-    android:layout_height="match_parent">
+    android:layout_height="match_parent"
+    android:layout_marginStart="16dp"
+    android:layout_marginEnd="16dp">
 
-    <ScrollView
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/list_main_item"
         android:layout_width="match_parent"
-        android:layout_height="match_parent">
-        <LinearLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:orientation="vertical"
-            android:gravity="center_horizontal">
-
-            <Button
-                android:id="@+id/btn_audio"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:layout_marginTop="40dp"
-                android:text="@string/audio_handle"/>
-
-            <Button
-                android:id="@+id/btn_video"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:text="@string/video_handle"
-                android:layout_marginTop="10dp" />
-
-            <Button
-                android:id="@+id/btn_media"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:text="@string/media_handle"
-                android:layout_marginTop="10dp" />
-
-            <Button
-                android:id="@+id/btn_play"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:text="@string/media_play"
-                android:layout_marginTop="10dp"
-                android:visibility="gone"/>
-
-            <Button
-                android:id="@+id/btn_push"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:text="@string/video_push"
-                android:layout_marginTop="10dp" />
-
-            <Button
-                android:id="@+id/btn_live"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:text="@string/video_live"
-                android:layout_marginTop="10dp" />
-
-            <Button
-                android:id="@+id/btn_filter"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:text="@string/video_filter"
-                android:layout_marginTop="10dp" />
-
-            <Button
-                android:id="@+id/btn_preview"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:text="@string/video_preview"
-                android:layout_marginTop="10dp" />
-
-            <Button
-                android:id="@+id/btn_probe"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:text="@string/media_probe"
-                android:layout_marginTop="10dp" />
-
-            <Button
-                android:id="@+id/btn_audio_effect"
-                android:layout_width="wrap_content"
-                android:layout_height="wrap_content"
-                android:text="@string/audio_effect"
-                android:layout_marginTop="10dp" />
-
-        </LinearLayout>
-    </ScrollView>
+        android:layout_height="wrap_content"
+        android:layout_centerInParent="true" />
 
 </RelativeLayout>

app/src/main/res/layout/item_waterfall.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="wrap_content" android:layout_height="wrap_content">
+
+    <TextView
+        android:id="@+id/txt_component"
+        android:layout_width="wrap_content"
+        android:layout_height="wrap_content"
+        android:textColor="@color/colorPrimary"
+        android:textSize="16sp"
+        android:gravity="center"
+        android:clickable="true"
+        android:focusable="true"
+        android:paddingStart="10dp"
+        android:paddingEnd="10dp"
+        android:background="@drawable/btn_rect"/>
+
+</LinearLayout>