Add focusable prop

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

@@ -190,6 +190,7 @@ class ReactExoplayerView extends FrameLayout implements
     private Dynamic textTrackValue;
     private ReadableArray textTracks;
     private boolean disableFocus;
+    private boolean focusable = true;
     private boolean disableBuffering;
     private long contentStartTime = -1L;
     private boolean disableDisconnectError;
@@ -284,6 +285,8 @@ class ReactExoplayerView extends FrameLayout implements
 
         addView(exoPlayerView, 0, layoutParams);
 
+        exoPlayerView.setFocusable(this.focusable);
+
         mainHandler = new Handler();
     }
 
@@ -571,7 +574,7 @@ class ReactExoplayerView extends FrameLayout implements
                 }
             }
         }, 1);
-        
+
     }
 
     private void initializePlayerCore(ReactExoplayerView self) {
@@ -1119,7 +1122,7 @@ class ReactExoplayerView extends FrameLayout implements
         WritableArray videoTracks = Arguments.createArray();
 
         MappingTrackSelector.MappedTrackInfo info = trackSelector.getCurrentMappedTrackInfo();
-        
+
         if (info == null || trackRendererIndex == C.INDEX_UNSET) {
             return videoTracks;
         }
@@ -1578,7 +1581,7 @@ class ReactExoplayerView extends FrameLayout implements
             for (int j = 0; j < group.length; j++) {
                 allTracks.add(j);
             }
-            
+
             // Valiate list of all tracks and add only supported formats
             int supportedFormatLength = 0;
             ArrayList<Integer> supportedTrackList = new ArrayList<Integer>();
@@ -1737,13 +1740,18 @@ class ReactExoplayerView extends FrameLayout implements
         this.disableFocus = disableFocus;
     }
 
+    public void setFocusable(boolean focusable) {
+        this.focusable = focusable;
+        exoPlayerView.setFocusable(this.focusable);
+    }
+
     public void setBackBufferDurationMs(int backBufferDurationMs) {
         Runtime runtime = Runtime.getRuntime();
         long usedMemory = runtime.totalMemory() - runtime.freeMemory();
         long freeMemory = runtime.maxMemory() - usedMemory;
         long reserveMemory = (long)minBackBufferMemoryReservePercent * runtime.maxMemory();
         if (reserveMemory > freeMemory) {
-            // We don't have enough memory in reserve so we will 
+            // We don't have enough memory in reserve so we will
             Log.w("ExoPlayer Warning", "Not enough reserve memory, setting back buffer to 0ms to reduce memory pressure!");
             this.backBufferDurationMs = 0;
             return;