优化Android 11上的文件选择

app/src/main/java/io/legado/app/ui/book/local/ImportBookActivity.kt

@@ -4,11 +4,11 @@ import android.annotation.SuppressLint
 import android.app.Activity
 import android.content.Intent
 import android.net.Uri
+import android.os.Build
 import android.os.Bundle
 import android.provider.DocumentsContract
 import android.view.Menu
 import android.view.MenuItem
-import android.view.View
 import androidx.appcompat.widget.PopupMenu
 import androidx.documentfile.provider.DocumentFile
 import androidx.lifecycle.LiveData
@@ -119,36 +119,32 @@ class ImportBookActivity : VMBaseActivity<ImportBookViewModel>(R.layout.activity
     }
 
     private fun upRootDoc() {
-        AppConfig.importBookPath?.let {
-            if (it.isContentPath()) {
-                val rootUri = Uri.parse(it)
-                rootDoc = DocumentFile.fromTreeUri(this, rootUri)
-                subDocs.clear()
-            } else {
-                rootDoc = null
-                subDocs.clear()
-                path = it
-            }
-        } ?: let {
-            // 没有权限就显示一个授权提示和按钮
-            if (PermissionsCompat.check(this, *Permissions.Group.STORAGE)) {
-                hint_per.visibility = View.GONE
-            } else {
-                hint_per.visibility = View.VISIBLE
-                tv_request_per.onClick {
+        AppConfig.importBookPath?.let { lastPath ->
+            when {
+                lastPath.isContentPath() -> {
+                    val rootUri = Uri.parse(lastPath)
+                    rootDoc = DocumentFile.fromTreeUri(this, rootUri)
+                    subDocs.clear()
+                    upPath()
+                }
+                Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q -> {
+                    FilePicker.selectFolder(this, requestCodeSelectFolder)
+                }
+                lastPath.isNotBlank() -> {
                     PermissionsCompat.Builder(this)
                         .addPermissions(*Permissions.Group.STORAGE)
                         .rationale(R.string.tip_perm_request_storage)
                         .onGranted {
-                            hint_per.visibility = View.GONE
-                            initData()
-                            upRootDoc()
+                            rootDoc = null
+                            subDocs.clear()
+                            path = lastPath
+                            upPath()
                         }
                         .request()
                 }
+                else -> FilePicker.selectFolder(this, requestCodeSelectFolder)
             }
         }
-        upPath()
     }
 
     @SuppressLint("SetTextI18n")
@@ -183,6 +179,7 @@ class ImportBookActivity : VMBaseActivity<ImportBookViewModel>(R.layout.activity
                 }
             }
         } ?: let {
+            if (path.isBlank()) return
             tv_path.text = path.replace(sdPath, "SD")
             val docList = arrayListOf<DocItem>()
             File(path).listFiles()?.forEach {

app/src/main/java/io/legado/app/ui/filepicker/FilePicker.kt

@@ -24,7 +24,7 @@ object FilePicker {
         otherFun: ((action: String) -> Unit)? = null
     ) {
         val selectList = arrayListOf(activity.getString(R.string.sys_folder_picker))
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.R) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
             selectList.add(activity.getString(R.string.app_folder_picker))
         }
         otherActions?.let {
@@ -69,7 +69,7 @@ object FilePicker {
         otherFun: ((action: String) -> Unit)? = null
     ) {
         val selectList = arrayListOf(fragment.getString(R.string.sys_folder_picker))
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.R) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
             selectList.add(fragment.getString(R.string.app_folder_picker))
         }
         otherActions?.let {
@@ -115,7 +115,7 @@ object FilePicker {
         otherFun: ((action: String) -> Unit)? = null
     ) {
         val selectList = arrayListOf(activity.getString(R.string.sys_file_picker))
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.R) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
             selectList.add(activity.getString(R.string.app_file_picker))
         }
         otherActions?.let {
@@ -174,7 +174,7 @@ object FilePicker {
         otherFun: ((action: String) -> Unit)? = null
     ) {
         val selectList = arrayListOf(fragment.getString(R.string.sys_file_picker))
-        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.R) {
+        if (Build.VERSION.SDK_INT < Build.VERSION_CODES.Q) {
             selectList.add(fragment.getString(R.string.app_file_picker))
         }
         otherActions?.let {

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

@@ -73,40 +73,4 @@
         android:layout_height="wrap_content"
         app:layout_constraintBottom_toBottomOf="parent" />
 
-    <LinearLayout
-        android:id="@+id/hint_per"
-        app:layout_constraintBottom_toBottomOf="parent"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toTopOf="parent"
-        android:orientation="vertical"
-        android:padding="36dp"
-        android:gravity="center"
-        android:visibility="gone"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content">
-
-        <TextView
-            android:text="@string/tip_local_perm_request_storage"
-            android:layout_marginBottom="16dp"
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content">
-        </TextView>
-
-        <io.legado.app.ui.widget.text.AccentBgTextView
-            android:id="@+id/tv_request_per"
-            android:layout_width="wrap_content"
-            android:layout_height="wrap_content"
-            android:layout_marginStart="8dp"
-            android:paddingLeft="20dp"
-            android:paddingRight="20dp"
-            android:minHeight="42dp"
-            android:gravity="center"
-            android:text="@string/request_permission"
-            android:textSize="14sp"
-            app:radius="30dp" />
-
-    </LinearLayout>
-
-
 </androidx.constraintlayout.widget.ConstraintLayout>