我尝试播放一些"媒体",但在AVPlayer开始播放时,我不知道它是音频还是视频。
我连接了播放器图层,它很好用。
self.avPlayerLayer = [AVPlayerLayer playerLayerWithPlayer:[[PCPlayerManager sharedManager] audioPlayer]];
avPlayerLayer.videoGravity = AVLayerVideoGravityResizeAspect;
avPlayerLayer.frame = CGRectMake(0, 0, videoView.frame.size.width, videoView.frame.size.height);
[videoView.layer addSublayer:avPlayerLayer];
但是我该如何检查是否有视频,以便添加/删除一些选项?