Merge pull request #1088 from react-native-community/bugfix/multiple-ios-onload

Prevent iOS onLoad event during seeking

ios/RCTVideo.m

@@ -25,6 +25,7 @@ static NSString *const timedMetadata = @"timedMetadata";
   /* Required to publish events */
   RCTEventDispatcher *_eventDispatcher;
   BOOL _playbackRateObserverRegistered;
+  BOOL _videoLoadStarted;
 
   bool _pendingSeek;
   float _pendingSeekTime;
@@ -316,6 +317,7 @@ static NSString *const timedMetadata = @"timedMetadata";
                                         });
     }
   });
+  _videoLoadStarted = YES;
 }
 
 - (AVPlayerItem*)playerItemForSource:(NSDictionary *)source
@@ -352,18 +354,12 @@ static NSString *const timedMetadata = @"timedMetadata";
 - (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary *)change context:(void *)context
 {
   if (object == _playerItem) {
-
     // When timeMetadata is read the event onTimedMetadata is triggered
-    if ([keyPath isEqualToString: timedMetadata])
-    {
-
-
+    if ([keyPath isEqualToString:timedMetadata]) {
       NSArray<AVMetadataItem *> *items = [change objectForKey:@"new"];
       if (items && ![items isEqual:[NSNull null]] && items.count > 0) {
-
         NSMutableArray *array = [NSMutableArray new];
         for (AVMetadataItem *item in items) {
-
           NSString *value = item.value;
           NSString *identifier = item.identifier;
           
@@ -405,11 +401,12 @@ static NSString *const timedMetadata = @"timedMetadata";
               || (preferredTransform.tx == 0 && preferredTransform.ty == 0))
           {
             orientation = @"landscape";
-          } else
+          } else {
             orientation = @"portrait";
           }
+        }
         
-      if(self.onVideoLoad) {
+        if (self.onVideoLoad && _videoLoadStarted) {
           self.onVideoLoad(@{@"duration": [NSNumber numberWithFloat:duration],
                              @"currentTime": [NSNumber numberWithFloat:CMTimeGetSeconds(_playerItem.currentTime)],
                              @"canPlayReverse": [NSNumber numberWithBool:_playerItem.canPlayReverse],
@@ -426,7 +423,7 @@ static NSString *const timedMetadata = @"timedMetadata";
                              @"textTracks": [self getTextTrackInfo],
                              @"target": self.reactTag});
         }
-
+        _videoLoadStarted = NO;
         
         [self attachListeners];
         [self applyModifiers];