ios – 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.如何让它去后台？

解决方法

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;

并在前面贴上标签