Question

    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。我只想把视频作为背景元素。使用此代码，它似乎可以播放所有UI元素。如何让它转到后台？

Answer 1

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

 theView.layer.zPosition = 1;

并将标签带到前面

AVPlayer - UILabel在视频中不可见

1 个答案: