private void TryDisposePlayer() { if (_player != null) { try { _videoLayer.RemoveObserver(this, new NSString("videoRect"), _videoLayer.Handle); _videoLayer.RemoveFromSuperLayer(); _player.CurrentItem?.RemoveObserver(this, new NSString("loadedTimeRanges"), _player.Handle); _player.CurrentItem?.RemoveObserver(this, new NSString("status"), _player.Handle); _player.CurrentItem?.RemoveObserver(this, new NSString("duration"), _player.Handle); _player.RemoveObserver(this, new NSString("rate"), RateObservationContext.Handle); _player.RemoveTimeObserver(_periodicTimeObserverObject); _player.RemoveAllItems(); } finally { _itemFailedToPlayToEndTimeNotification?.Dispose(); _playbackStalledNotification?.Dispose(); _didPlayToEndTimeNotification?.Dispose(); _videoLayer?.Dispose(); _player?.CurrentItem?.Dispose(); _player?.Dispose(); _player = null; } } }