Extend TrackSelectionDialog for usage in PlayerActivity.

We need additional initial selection settings and a configurable title.
The update logic for the track selection parameters moved to a static helper
method in TrackSelectionDialog.

PiperOrigin-RevId: 233713788

demos/main/src/main/java/com/google/android/exoplayer2/demo/DownloadTracker.java

@@ -241,12 +241,14 @@ public class DownloadTracker implements DownloadManager.Listener {
       mappedTrackInfo = downloadHelper.getMappedTrackInfo(/* periodIndex= */ 0);
       trackSelectionDialog = new TrackSelectionDialog();
       trackSelectionDialog.init(
+          /* titleId= */ R.string.exo_download_description,
           mappedTrackInfo,
+          /* initialSelection= */ DownloadHelper.DEFAULT_TRACK_SELECTOR_PARAMETERS,
           /* allowAdaptiveSelections =*/ false,
           /* allowMultipleOverrides= */ true,
           /* onClickListener= */ this,
           /* onDismissListener= */ this);
-      trackSelectionDialog.show(fragmentManager, "download");
+      trackSelectionDialog.show(fragmentManager, /* tag= */ null);
     }
 
     @Override

demos/main/src/main/java/com/google/android/exoplayer2/demo/PlayerActivity.java

@@ -15,13 +15,13 @@
  */
 package com.google.android.exoplayer2.demo;
 
-import android.app.Activity;
 import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.net.Uri;
 import android.os.Bundle;
 import android.support.annotation.NonNull;
 import android.support.annotation.Nullable;
+import android.support.v7.app.AppCompatActivity;
 import android.util.Pair;
 import android.view.KeyEvent;
 import android.view.View;
@@ -65,7 +65,6 @@ import com.google.android.exoplayer2.trackselection.TrackSelectionArray;
 import com.google.android.exoplayer2.ui.DebugTextViewHelper;
 import com.google.android.exoplayer2.ui.PlayerControlView;
 import com.google.android.exoplayer2.ui.PlayerView;
-import com.google.android.exoplayer2.ui.TrackSelectionDialogBuilder;
 import com.google.android.exoplayer2.ui.spherical.SphericalSurfaceView;
 import com.google.android.exoplayer2.upstream.DataSource;
 import com.google.android.exoplayer2.upstream.HttpDataSource;
@@ -80,7 +79,7 @@ import java.util.List;
 import java.util.UUID;
 
 /** An activity that plays media using {@link SimpleExoPlayer}. */
-public class PlayerActivity extends Activity
+public class PlayerActivity extends AppCompatActivity
     implements OnClickListener, PlaybackPreparer, PlayerControlView.VisibilityListener {
 
   public static final String DRM_SCHEME_EXTRA = "drm_scheme";
@@ -125,6 +124,7 @@ public class PlayerActivity extends Activity
 
   private PlayerView playerView;
   private LinearLayout debugRootView;
+  private Button selectTracksButton;
   private TextView debugTextView;
 
   private DataSource.Factory dataSourceFactory;
@@ -160,10 +160,10 @@ public class PlayerActivity extends Activity
     }
 
     setContentView(R.layout.player_activity);
-    View rootView = findViewById(R.id.root);
-    rootView.setOnClickListener(this);
     debugRootView = findViewById(R.id.controls_root);
     debugTextView = findViewById(R.id.debug_text_view);
+    selectTracksButton = findViewById(R.id.select_tracks_button);
+    selectTracksButton.setOnClickListener(this);
 
     playerView = findViewById(R.id.player_view);
     playerView.setControllerVisibilityListener(this);
@@ -272,6 +272,7 @@ public class PlayerActivity extends Activity
 
   @Override
   public void onSaveInstanceState(Bundle outState) {
+    super.onSaveInstanceState(outState);
     updateTrackSelectorParameters();
     updateStartPosition();
     outState.putParcelable(KEY_TRACK_SELECTOR_PARAMETERS, trackSelectorParameters);
@@ -292,23 +293,9 @@ public class PlayerActivity extends Activity
 
   @Override
   public void onClick(View view) {
-    if (view.getParent() == debugRootView) {
-      MappedTrackInfo mappedTrackInfo = trackSelector.getCurrentMappedTrackInfo();
-      if (mappedTrackInfo != null) {
-        CharSequence title = ((Button) view).getText();
-        int rendererIndex = (int) view.getTag();
-        int rendererType = mappedTrackInfo.getRendererType(rendererIndex);
-        boolean allowAdaptiveSelections =
-            rendererType == C.TRACK_TYPE_VIDEO
-                || (rendererType == C.TRACK_TYPE_AUDIO
-                    && mappedTrackInfo.getTypeSupport(C.TRACK_TYPE_VIDEO)
-                        == MappedTrackInfo.RENDERER_SUPPORT_NO_TRACKS);
-        new TrackSelectionDialogBuilder(/* context= */ this, title, trackSelector, rendererIndex)
-            .setShowDisableOption(true)
-            .setAllowAdaptiveSelections(allowAdaptiveSelections)
-            .build()
-            .show();
-      }
+    if (view == selectTracksButton) {
+      TrackSelectionDialog dialog = TrackSelectionDialog.createForTrackSelector(trackSelector);
+      dialog.show(getSupportFragmentManager(), /* tag= */ null);
     }
   }
 
@@ -454,7 +441,7 @@ public class PlayerActivity extends Activity
       player.seekTo(startWindow, startPosition);
     }
     player.prepare(mediaSource, !haveStartPosition, false);
-    updateButtonVisibilities();
+    updateButtonVisibility();
   }
 
   private MediaSource buildMediaSource(Uri uri) {
@@ -605,41 +592,9 @@ public class PlayerActivity extends Activity
 
   // User controls
 
-  private void updateButtonVisibilities() {
-    debugRootView.removeAllViews();
-    if (player == null) {
-      return;
-    }
-
-    MappedTrackInfo mappedTrackInfo = trackSelector.getCurrentMappedTrackInfo();
-    if (mappedTrackInfo == null) {
-      return;
-    }
-
-    for (int i = 0; i < mappedTrackInfo.getRendererCount(); i++) {
-      TrackGroupArray trackGroups = mappedTrackInfo.getTrackGroups(i);
-      if (trackGroups.length != 0) {
-        Button button = new Button(this);
-        int label;
-        switch (player.getRendererType(i)) {
-          case C.TRACK_TYPE_AUDIO:
-            label = R.string.exo_track_selection_title_audio;
-            break;
-          case C.TRACK_TYPE_VIDEO:
-            label = R.string.exo_track_selection_title_video;
-            break;
-          case C.TRACK_TYPE_TEXT:
-            label = R.string.exo_track_selection_title_text;
-            break;
-          default:
-            continue;
-        }
-        button.setText(label);
-        button.setTag(i);
-        button.setOnClickListener(this);
-        debugRootView.addView(button);
-      }
-    }
+  private void updateButtonVisibility() {
+    selectTracksButton.setEnabled(
+        player != null && trackSelector.getCurrentMappedTrackInfo() != null);
   }
 
   private void showControls() {
@@ -675,7 +630,7 @@ public class PlayerActivity extends Activity
       if (playbackState == Player.STATE_ENDED) {
         showControls();
       }
-      updateButtonVisibilities();
+      updateButtonVisibility();
     }
 
     @Override
@@ -694,7 +649,7 @@ public class PlayerActivity extends Activity
         initializePlayer();
       } else {
         updateStartPosition();
-        updateButtonVisibilities();
+        updateButtonVisibility();
         showControls();
       }
     }
@@ -702,7 +657,7 @@ public class PlayerActivity extends Activity
     @Override
     @SuppressWarnings("ReferenceEquality")
     public void onTracksChanged(TrackGroupArray trackGroups, TrackSelectionArray trackSelections) {
-      updateButtonVisibilities();
+      updateButtonVisibility();
       if (trackGroups != lastSeenTrackGroupArray) {
         MappedTrackInfo mappedTrackInfo = trackSelector.getCurrentMappedTrackInfo();
         if (mappedTrackInfo != null) {

demos/main/src/main/java/com/google/android/exoplayer2/demo/TrackSelectionDialog.java

@@ -33,9 +33,11 @@ import android.view.View;
 import android.view.ViewGroup;
 import com.google.android.exoplayer2.C;
 import com.google.android.exoplayer2.source.TrackGroupArray;
+import com.google.android.exoplayer2.trackselection.DefaultTrackSelector;
 import com.google.android.exoplayer2.trackselection.DefaultTrackSelector.SelectionOverride;
 import com.google.android.exoplayer2.trackselection.MappingTrackSelector.MappedTrackInfo;
 import com.google.android.exoplayer2.ui.TrackSelectionView;
+import com.google.android.exoplayer2.util.Assertions;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.List;
@@ -46,12 +48,54 @@ public final class TrackSelectionDialog extends DialogFragment {
   private final SparseArray<TrackSelectionViewFragment> tabFragments;
   private final List<CharSequence> tabTitles;
 
+  private int titleId;
   private MappedTrackInfo mappedTrackInfo;
+  private DefaultTrackSelector.Parameters initialSelection;
   private boolean allowAdaptiveSelections;
   private boolean allowMultipleOverrides;
   private DialogInterface.OnClickListener onClickListener;
   private DialogInterface.OnDismissListener onDismissListener;
 
+  /**
+   * Creates and initialized a dialog with a {@link DefaultTrackSelector} and automatically updates
+   * the track selector's parameters when tracks are selected.
+   *
+   * @param trackSelector A {@link DefaultTrackSelector}.
+   */
+  public static TrackSelectionDialog createForTrackSelector(DefaultTrackSelector trackSelector) {
+    MappedTrackInfo mappedTrackInfo =
+        Assertions.checkNotNull(trackSelector.getCurrentMappedTrackInfo());
+    TrackSelectionDialog trackSelectionDialog = new TrackSelectionDialog();
+    DefaultTrackSelector.Parameters parameters = trackSelector.getParameters();
+    trackSelectionDialog.init(
+        /* titleId= */ R.string.track_selection_title,
+        mappedTrackInfo,
+        /* initialSelection = */ parameters,
+        /* allowAdaptiveSelections =*/ true,
+        /* allowMultipleOverrides= */ false,
+        /* onClickListener= */ (dialog, which) -> {
+          DefaultTrackSelector.ParametersBuilder builder = parameters.buildUpon();
+          for (int i = 0; i < mappedTrackInfo.getRendererCount(); i++) {
+            builder
+                .clearSelectionOverrides(/* rendererIndex= */ i)
+                .setRendererDisabled(
+                    /* rendererIndex= */ i,
+                    trackSelectionDialog.getIsDisabled(/* rendererIndex= */ i));
+            List<SelectionOverride> overrides =
+                trackSelectionDialog.getOverrides(/* rendererIndex= */ i);
+            if (!overrides.isEmpty()) {
+              builder.setSelectionOverride(
+                  /* rendererIndex= */ i,
+                  mappedTrackInfo.getTrackGroups(/* rendererIndex= */ i),
+                  overrides.get(0));
+            }
+          }
+          trackSelector.setParameters(builder);
+        },
+        /* onDismissListener= */ (dialog) -> {});
+    return trackSelectionDialog;
+  }
+
   /** Creates the dialog. */
   public TrackSelectionDialog() {
     tabFragments = new SparseArray<>();
@@ -63,7 +107,10 @@ public final class TrackSelectionDialog extends DialogFragment {
   /**
    * Initializes the dialog.
    *
+   * @param titleId The resource id of the dialog title.
    * @param mappedTrackInfo The {@link MappedTrackInfo} to display.
+   * @param initialSelection The {@link DefaultTrackSelector.Parameters} describing the initial
+   *     track selection.
    * @param allowAdaptiveSelections Whether adaptive selections (consisting of more than one track)
    *     can be made.
    * @param allowMultipleOverrides Whether tracks from multiple track groups can be selected.
@@ -72,12 +119,16 @@ public final class TrackSelectionDialog extends DialogFragment {
    *     dismissed.
    */
   public void init(
+      int titleId,
       MappedTrackInfo mappedTrackInfo,
+      DefaultTrackSelector.Parameters initialSelection,
       boolean allowAdaptiveSelections,
       boolean allowMultipleOverrides,
       DialogInterface.OnClickListener onClickListener,
       DialogInterface.OnDismissListener onDismissListener) {
+    this.titleId = titleId;
     this.mappedTrackInfo = mappedTrackInfo;
+    this.initialSelection = initialSelection;
     this.allowAdaptiveSelections = allowAdaptiveSelections;
     this.allowMultipleOverrides = allowMultipleOverrides;
     this.onClickListener = onClickListener;
@@ -112,7 +163,7 @@ public final class TrackSelectionDialog extends DialogFragment {
   @Override
   public Dialog onCreateDialog(Bundle savedInstanceState) {
     return new AlertDialog.Builder(getActivity())
-        .setTitle(R.string.exo_download_description)
+        .setTitle(titleId)
         .setPositiveButton(android.R.string.ok, onClickListener)
         .setNegativeButton(android.R.string.cancel, /* listener= */ null)
         .create();
@@ -140,7 +191,12 @@ public final class TrackSelectionDialog extends DialogFragment {
       }
       TrackSelectionViewFragment tabFragment = new TrackSelectionViewFragment();
       tabFragment.init(
-          mappedTrackInfo, /* rendererIndex= */ i, allowAdaptiveSelections, allowMultipleOverrides);
+          mappedTrackInfo,
+          /* rendererIndex= */ i,
+          initialSelection.getRendererDisabled(/* rendererIndex= */ i),
+          initialSelection.getSelectionOverride(/* rendererIndex= */ i, trackGroupArray),
+          allowAdaptiveSelections,
+          allowMultipleOverrides);
       tabFragments.put(i, tabFragment);
       tabTitles.add(trackTypeString);
     }
@@ -196,6 +252,8 @@ public final class TrackSelectionDialog extends DialogFragment {
 
     private MappedTrackInfo mappedTrackInfo;
     private int rendererIndex;
+    private boolean initialIsDisabled;
+    @Nullable private SelectionOverride initialOverride;
     private boolean allowAdaptiveSelections;
     private boolean allowMultipleOverrides;
 
@@ -204,10 +262,14 @@ public final class TrackSelectionDialog extends DialogFragment {
     public void init(
         MappedTrackInfo mappedTrackInfo,
         int rendererIndex,
+        boolean initialIsDisabled,
+        @Nullable SelectionOverride initialOverride,
         boolean allowAdaptiveSelections,
         boolean allowMultipleOverrides) {
       this.mappedTrackInfo = mappedTrackInfo;
       this.rendererIndex = rendererIndex;
+      this.initialIsDisabled = initialIsDisabled;
+      this.initialOverride = initialOverride;
       this.allowAdaptiveSelections = allowAdaptiveSelections;
       this.allowMultipleOverrides = allowMultipleOverrides;
     }
@@ -227,8 +289,10 @@ public final class TrackSelectionDialog extends DialogFragment {
       trackSelectionView.init(
           mappedTrackInfo,
           rendererIndex,
-          /* isDisabled= */ false,
-          /* overrides= */ Collections.emptyList());
+          initialIsDisabled,
+          initialOverride == null
+              ? Collections.emptyList()
+              : Collections.singletonList(initialOverride));
       return rootView;
     }
   }

demos/main/src/main/res/layout/player_activity.xml

@@ -42,7 +42,15 @@
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
         android:orientation="horizontal"
-        android:visibility="gone"/>
+        android:visibility="gone">
+
+      <Button android:id="@+id/select_tracks_button"
+          android:layout_width="wrap_content"
+          android:layout_height="wrap_content"
+          android:text="@string/track_selection_title"
+          android:enabled="false"/>
+
+    </LinearLayout>
 
   </LinearLayout>
 

demos/main/src/main/res/values/strings.xml

@@ -17,6 +17,8 @@
 
   <string name="application_name">ExoPlayer</string>
 
+  <string name="track_selection_title">Select tracks</string>
+
   <string name="unexpected_intent_action">Unexpected intent action: <xliff:g id="action">%1$s</xliff:g></string>
 
   <string name="error_cleartext_not_permitted">Cleartext traffic not permitted</string>

demos/main/src/main/res/values/styles.xml

@@ -15,7 +15,7 @@
 -->
 <resources xmlns:android="http://schemas.android.com/apk/res/android">
 
-  <style name="PlayerTheme" parent="android:Theme.Holo">
+  <style name="PlayerTheme" parent="Theme.AppCompat.NoActionBar">
     <item name="android:windowNoTitle">true</item>
     <item name="android:windowBackground">@android:color/black</item>
   </style>