swift - 如何删除我在播放 AVplayer Swift 时添加的图层

Question

我有一个应用程序，它会多次重新进入相​​同的 View ，每次都会为 mp4 视频创建一个图层，因为这些图层没有被删除，或者至少这是我的猜测，所以会造成内存蠕变。我怎样才能删除添加的图层？

override func viewWillAppear(animated: Bool) {



     let videoURL: NSURL = NSBundle.mainBundle().URLForResource("info2", withExtension: "mp4")!


        mygtukas = AVPlayer(URL: videoURL)
        mygtukas?.actionAtItemEnd = .None
        mygtukas?.muted = true



        let playerLayer = AVPlayerLayer(player: mygtukas)
        playerLayer.videoGravity = AVLayerVideoGravityResizeAspectFill
        playerLayer.zPosition = 1
        playerLayer.frame = CGRect(x:20.0, y: 703.0, width: 36.0, height: 36.0)


        view.layer.addSublayer(playerLayer)

        mygtukas?.play()

        NSNotificationCenter.defaultCenter().addObserver(self,
            selector: "loopVideo",
            name: AVPlayerItemDidPlayToEndTimeNotification,
            object:nil)




}

Answer 1

这应该有效:

将 playerLayer 设为类实例并尝试以下操作。调用内部 loopVideo 方法:

playerLayer.removeFromSuperlayer()