AVPlayer - UILabel在视频中不可见

NSString *urlPath; 
    NSURL *videoUrl; 

    urlPath = [[NSBundle mainBundle] pathForResource:@"fogLoop" ofType:@"mp4"]; 
    videoUrl = [NSURL fileURLWithPath:urlPath]; 

    avPlayer = [AVPlayer playerWithURL:videoUrl]; 
    avPlayerLayer = [AVPlayerLayer playerLayerWithPlayer:avPlayer]; 

    avPlayerLayer.frame = videoView.layer.bounds; 

    avPlayerLayer.videoGravity = AVLayerVideoGravityResizeAspectFill; 

    [videoView.layer addSublayer: avPlayerLayer]; 

    avPlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone; 

    [[NSNotificationCenter defaultCenter] addObserver:self 
              selector:@selector(playerItemDidReachEnd:) 
               name:AVPlayerItemDidPlayToEndTimeNotification 
               object:[avPlayer currentItem]]; 

    [avPlayer play];

我在这个视图上有几个UILabel。我只是想将视频作为背景元素。有了这段代码，它似乎可以播放所有UI元素。我如何让它进入背景？AVPlayer - UILabel在视频中不可见

来源

2013-02-18 objectiveccoder001

你能解释avPlayer和avPlayerLayer的类型？ – 2016-05-31 06:11:18

您可以使用视图图层（它是CALayer对象）的zPosition属性来更改视图的z-index。

theView.layer.zPosition = 1;

，并把标签前

来源

2013-02-18 09:21:12

这让我疯狂 - 感谢您的简单解决方案！ – 2017-04-08 22:05:59

AVPlayer - UILabel在视频中不可见

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