introducing onExternalPlaybackActiveChange

Video.js

@@ -172,6 +172,12 @@ export default class Video extends Component {
       this.props.onPlaybackRateChange(event.nativeEvent);
     }
   };
+  
+  _onExternalPlaybackChange = (event) => {
+    if (this.props.onExternalPlaybackChange) {
+      this.props.onExternalPlaybackChange(event.nativeEvent);
+    }
+  }
 
   _onAudioBecomingNoisy = () => {
     if (this.props.onAudioBecomingNoisy) {
@@ -246,6 +252,7 @@ export default class Video extends Component {
       onPlaybackRateChange: this._onPlaybackRateChange,
       onAudioFocusChanged: this._onAudioFocusChanged,
       onAudioBecomingNoisy: this._onAudioBecomingNoisy,
+      onExternalPlaybackChange: this._onExternalPlaybackChange,
     });
 
     if (this.props.poster && this.state.showPoster) {
@@ -379,6 +386,7 @@ Video.propTypes = {
   onPlaybackRateChange: PropTypes.func,
   onAudioFocusChanged: PropTypes.func,
   onAudioBecomingNoisy: PropTypes.func,
+  onExternalPlaybackChange: PropTypes.func,
 
   /* Required by react-native */
   scaleX: PropTypes.number,

ios/Video/RCTVideo.h

@@ -35,6 +35,7 @@
 @property (nonatomic, copy) RCTBubblingEventBlock onPlaybackStalled;
 @property (nonatomic, copy) RCTBubblingEventBlock onPlaybackResume;
 @property (nonatomic, copy) RCTBubblingEventBlock onPlaybackRateChange;
+@property (nonatomic, copy) RCTBubblingEventBlock onExternalPlaybackChange;
 
 - (instancetype)initWithEventDispatcher:(RCTEventDispatcher *)eventDispatcher NS_DESIGNATED_INITIALIZER;
 

ios/Video/RCTVideo.m

@@ -12,6 +12,7 @@ static NSString *const playbackBufferEmptyKeyPath = @"playbackBufferEmpty";
 static NSString *const readyForDisplayKeyPath = @"readyForDisplay";
 static NSString *const playbackRate = @"rate";
 static NSString *const timedMetadata = @"timedMetadata";
+static NSString *const externalPlaybackActive = @"externalPlaybackActive";
 
 static int const RCTVideoUnset = -1;
 
@@ -35,6 +36,7 @@ static int const RCTVideoUnset = -1;
   /* Required to publish events */
   RCTEventDispatcher *_eventDispatcher;
   BOOL _playbackRateObserverRegistered;
+  BOOL _isExternalPlaybackActiveObserverRegistered;
   BOOL _videoLoadStarted;
 
   bool _pendingSeek;
@@ -74,6 +76,7 @@ static int const RCTVideoUnset = -1;
     _eventDispatcher = eventDispatcher;
     
     _playbackRateObserverRegistered = NO;
+    _isExternalPlaybackActiveObserverRegistered = NO;
     _playbackStalled = NO;
     _rate = 1.0;
     _volume = 1.0;
@@ -333,12 +336,19 @@ static int const RCTVideoUnset = -1;
         [_player removeObserver:self forKeyPath:playbackRate context:nil];
         _playbackRateObserverRegistered = NO;
       }
+      if (_isExternalPlaybackActiveObserverRegistered) {
+        [_player removeObserver:self forKeyPath:externalPlaybackActive context:nil];
+        _isExternalPlaybackActiveObserverRegistered = NO;
+      }
         
       _player = [AVPlayer playerWithPlayerItem:_playerItem];
       _player.actionAtItemEnd = AVPlayerActionAtItemEndNone;
         
       [_player addObserver:self forKeyPath:playbackRate options:0 context:nil];
       _playbackRateObserverRegistered = YES;
+      
+      [_player addObserver:self forKeyPath:externalPlaybackActive options:0 context:nil];
+      _isExternalPlaybackActiveObserverRegistered = YES;
         
       [self addPlayerTimeObserver];
         
@@ -646,6 +656,12 @@ static int const RCTVideoUnset = -1;
         _playbackStalled = NO;
       }
     }
+    else if([keyPath isEqualToString:externalPlaybackActive]) {
+        if(self.onExternalPlaybackChange) {
+          self.onExternalPlaybackChange(@{@"isExternalPlaybackActive": [NSNumber numberWithBool:_player.isExternalPlaybackActive],
+                                          @"target": self.reactTag});
+        }
+    }
   } else {
     [super observeValueForKeyPath:keyPath ofObject:object change:change context:context];
   }
@@ -1290,6 +1306,10 @@ static int const RCTVideoUnset = -1;
     [_player removeObserver:self forKeyPath:playbackRate context:nil];
     _playbackRateObserverRegistered = NO;
   }
+  if (_isExternalPlaybackActiveObserverRegistered) {
+    [_player removeObserver:self forKeyPath:externalPlaybackActive context:nil];
+    _isExternalPlaybackActiveObserverRegistered = NO;
+  }
   _player = nil;
   
   [self removePlayerLayer];

ios/Video/RCTVideoManager.m

@@ -56,6 +56,7 @@ RCT_EXPORT_VIEW_PROPERTY(onReadyForDisplay, RCTBubblingEventBlock);
 RCT_EXPORT_VIEW_PROPERTY(onPlaybackStalled, RCTBubblingEventBlock);
 RCT_EXPORT_VIEW_PROPERTY(onPlaybackResume, RCTBubblingEventBlock);
 RCT_EXPORT_VIEW_PROPERTY(onPlaybackRateChange, RCTBubblingEventBlock);
+RCT_EXPORT_VIEW_PROPERTY(onExternalPlaybackChange, RCTBubblingEventBlock);
 
 - (NSDictionary *)constantsToExport
 {