Toggle playback controls according to standard Android click handling.

We currently toggle the view in onTouchEvent ACTION_DOWN which is non-standard
and causes problems when used in a ViewGroup intercepting touch events.

Switch to standard Android click handling instead which is also what most
other player apps are doing.

Issue:#5784
PiperOrigin-RevId: 245219728

RELEASENOTES.md

@@ -8,6 +8,8 @@
 * UI:
   * Allow setting `DefaultTimeBar` attributes on `PlayerView` and
     `PlayerControlView`.
+  * Change playback controls toggle from touch down to touch up events
+    ([#5784](https://github.com/google/ExoPlayer/issues/5784)).
   * Fix issue where playback controls were not kept visible on key presses
     ([#5963](https://github.com/google/ExoPlayer/issues/5963)).
 * Add a playWhenReady flag to MediaSessionConnector.PlaybackPreparer methods

library/ui/src/main/java/com/google/android/exoplayer2/ui/PlayerView.java

@@ -303,6 +303,7 @@ public class PlayerView extends FrameLayout implements AdsLoader.AdViewProvider
   private boolean controllerHideDuringAds;
   private boolean controllerHideOnTouch;
   private int textureViewRotation;
+  private boolean isTouching;
 
   public PlayerView(Context context) {
     this(context, null);
@@ -1048,11 +1049,21 @@ public class PlayerView extends FrameLayout implements AdsLoader.AdViewProvider
   }
 
   @Override
-  public boolean onTouchEvent(MotionEvent ev) {
-    if (ev.getActionMasked() != MotionEvent.ACTION_DOWN) {
+  public boolean onTouchEvent(MotionEvent event) {
+    switch (event.getAction()) {
+      case MotionEvent.ACTION_DOWN:
+        isTouching = true;
+        return true;
+      case MotionEvent.ACTION_UP:
+        if (isTouching) {
+          isTouching = false;
+          performClick();
+          return true;
+        }
+        return false;
+      default:
         return false;
     }
-    return performClick();
   }
 
   @Override