ios - 如何将 Storyboard 中的 UIButton 添加到 iOS 中 AVPlayer 的顶部？

Question

我正在我的应用程序中执行类似于 Uber 的视频启动。我在 Storyboard底部的 Storyboard中添加了两个按钮， Storyboard中的间距相等。现在我正在添加 AVPlayer 来播放 NSBundle 中的视频。在运行应用程序时，视频正在播放，但我在底部看不到我的按钮。为什么会这样？请建议..

   - (void)createVideoPlayer {

    NSString *filePath = [[NSBundle mainBundle] pathForResource:@"welcome_video" ofType:@"mp4"];
    NSURL *url = [NSURL fileURLWithPath:filePath];

    AVPlayerItem *playerItem = [AVPlayerItem playerItemWithURL:url];

    self.player = [AVPlayer playerWithPlayerItem:playerItem];
    self.player.volume = PLAYER_VOLUME;

    AVPlayerLayer *playerLayer = [AVPlayerLayer playerLayerWithPlayer:self.player];
    playerLayer.videoGravity = UIViewContentModeScaleToFill;
    playerLayer.frame = self.playerView.layer.bounds;
    [self.playerView.layer addSublayer:playerLayer];

    [self.player play];

    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(moviePlayDidEnd:) name:AVPlayerItemDidPlayToEndTimeNotification object:self.player.currentItem];
}

- (void)moviePlayDidEnd:(NSNotification*)notification{

    AVPlayerItem *item = [notification object];
    [item seekToTime:kCMTimeZero];
    [self.player play];
}

Storyboard中按钮的屏幕截图:


模拟器中的输出:



您可以看到缺少按钮和 注意:这些按钮的约束是正确的，我可以在每次预览中看到它们...

Answer 1

您需要调用bringSubviewToFront带上您的Button AVPlayer 上的导出正面和可见添加后AVPlyer你认为的实例。

[self.view bringSubviewToFront:buttonOutlet];