handle racing conditions when props are setted on exoplayer

CHANGELOG.md

@@ -1,5 +1,8 @@
 ## Changelog
 
+### next
+* Handle racing conditions when props are setted on exoplayer
+
 ### Version 4.4.2
 * Change compileOnly to implementation on gradle (for newer gradle versions and react-native 0.59 support) [#1592](https://github.com/react-native-community/react-native-video/pull/1592)
 * Replaced RCTBubblingEventBlock events by RCTDirectEventBlock to avoid event name collisions [#1625](https://github.com/react-native-community/react-native-video/pull/1625)

android-exoplayer/src/main/java/com/brentvatne/exoplayer/ReactExoplayerView.java

@@ -333,6 +333,11 @@ class ReactExoplayerView extends FrameLayout implements
     }
 
     private void initializePlayer() {
+        ReactExoplayerView self = this;
+
+        new Handler().postDelayed(new Runnable() {
+            @Override
+            public void run() {
                 if (player == null) {
                     TrackSelection.Factory videoTrackSelectionFactory = new AdaptiveTrackSelection.Factory(BANDWIDTH_METER);
                     trackSelector = new DefaultTrackSelector(videoTrackSelectionFactory);
@@ -342,11 +347,11 @@ class ReactExoplayerView extends FrameLayout implements
                     DefaultAllocator allocator = new DefaultAllocator(true, C.DEFAULT_BUFFER_SEGMENT_SIZE);
                     DefaultLoadControl defaultLoadControl = new DefaultLoadControl(allocator, minBufferMs, maxBufferMs, bufferForPlaybackMs, bufferForPlaybackAfterRebufferMs, -1, true);
                     player = ExoPlayerFactory.newSimpleInstance(getContext(), trackSelector, defaultLoadControl);
-            player.addListener(this);
+                    player.addListener(self);
-            player.setMetadataOutput(this);
+                    player.setMetadataOutput(self);
                     exoPlayerView.setPlayer(player);
-            audioBecomingNoisyReceiver.setListener(this);
+                    audioBecomingNoisyReceiver.setListener(self);
-            BANDWIDTH_METER.addEventListener(new Handler(), this);
+                    BANDWIDTH_METER.addEventListener(new Handler(), self);
                     setPlayWhenReady(!isPaused);
                     playerNeedsSource = true;
 
@@ -381,6 +386,8 @@ class ReactExoplayerView extends FrameLayout implements
                 // Initializing the playerControlView
                 initializePlayerControl();
             }
+        }, 1);
+    }
 
     private MediaSource buildMediaSource(Uri uri, String overrideExtension) {
         int type = Util.inferContentType(!TextUtils.isEmpty(overrideExtension) ? "." + overrideExtension
@@ -439,8 +446,9 @@ class ReactExoplayerView extends FrameLayout implements
             updateResumePosition();
             player.release();
             player.setMetadataOutput(null);
-            player = null;
             trackSelector = null;
+            player = null;
+
         }
         progressHandler.removeMessages(SHOW_PROGRESS);
         themedReactContext.removeLifecycleEventListener(this);
@@ -906,6 +914,7 @@ class ReactExoplayerView extends FrameLayout implements
     }
 
     public void setSelectedTrack(int trackType, String type, Dynamic value) {
+        if (player == null) return;
         int rendererIndex = getTrackRendererIndex(trackType);
         if (rendererIndex == C.INDEX_UNSET) {
             return;