ios - 在 AVPlayer 顶部绘制按钮

Question

我必须在视频顶部绘制标签或按钮 relay next previous , leave comment 。视频列表有它，一旦用户从表中选择一个项目，它需要播放，播放器播放完成后，那些按钮或标签应该出现在视频顶部

这是我的代码:

comPlayerControl = AVPlayerViewController()

if let player = comPlayerControl {

    let videoURL: String = "http://cdnapi.kaltura.com/p/11/sp/11/playManifest/entryId/"+selectedSubmission.transcodeRefId+"/format/applehttp/protocol/http/a.m3u8"
    let playerItem = AVPlayerItem(URL: NSURL(string: videoURL)! )
    commmentPlayer = AVPlayer(playerItem: playerItem)
    player.player = commmentPlayer
    player.view.frame = videoCell.frame
    player.view.sizeToFit()

    player.showsPlaybackControls = true
    NSNotificationCenter.defaultCenter().addObserver(
        self, 
        selector: #selector(CommentsTableViewController.playerDidFinishPlaying(_:)),
        name: AVPlayerItemDidPlayToEndTimeNotification, 
        object: playerItem
    )

    comPlayerControl.delegate = self
    videoCell.addSubview(player.view)
}

func playerDidFinishPlaying(note: NSNotification) {
    print("Video Finished")
    let DynamicView=UIView(frame: CGRectMake(100, 200, 100, 100))
    DynamicView.backgroundColor=UIColor.greenColor()
    DynamicView.layer.cornerRadius=25
    DynamicView.layer.borderWidth=2
    DynamicView.layer.zPosition = 1;
    comPlayerControl.view.addSubview(DynamicView)
}

这样的要求

Answer 1

您正在使用 AVPlayerViewController，因此没有理由像 Alessandro Ornano 的回答那样访问应用程序的窗口。为什么要重新发明轮子？每个 AVPlayerViewController 都有一个 contentOverlayView允许您在播放器和控件之间放置 View 的属性。

首先，创建一个新的 AVPlayerItem 并监听关于该项目的 AVPlayerItemDidPlayToEndTimeNotification 通知。将项目加载到播放器并开始播放。

项目完成后，您指定用于监听 AVPlayerItemDidPlayToEndTimeNotification 通知的选择器将被调用。在该选择器中，直接访问 contentOverlayView 并添加您的按钮:

在一些 View Controller 或其他对象中:

let playerVC = AVPlayerViewController()

// ...

func setupPlayer {

    let playerItem = AVPlayerItem(...)
    playerVC.player?.replaceCurrentItemWithPlayerItem(playerItem)
    NSNotificationCenter.defaultCenter().addObserver(self, selector: #selector(VC.itemFinished), name: AVPlayerItemDidPlayToEndTimeNotification, object: playerItem)
    self.presentViewController(playerVC, animated: true) { 
        self.playerVC.player?.play()
    }
}

func itemFinished() {
    let btn = UIButton(type: .System)
    btn.addTarget(self, action: #selector(VC.buttonTapped), forControlEvents: .TouchUpInside)
    self.playerVC.contentOverlayView?.addSubview(btn)
}

func buttonTapped() {
    print("button was tapped")
    // replay/comment logic here
}

如评论(和 rejected edit)中所述，按钮在 contentOverlayView 中可能不起作用。有关替代解决方案，请参阅 Pyro's answer .

您还可以子类化 AVPlayerViewController 并在子类的实例中执行所有操作，但 Apple warns against that :

Do not subclass AVPlayerViewController. Overriding this class’s methods is unsupported and results in undefined behavior.