ios - Swift:调整 AVPlayerLayer 的大小以匹配其父容器的边界

Question

我使用 AVPlayer 和 AVPlayerLayer(Swift，iOS 8.2)播放本地视频，我需要调整 AVPlayerLayer 的大小(introPlayerLayer) 当其父 View (introView) 调整大小时，包括方向更改。到目前为止，我所尝试的一切似乎都不起作用，而且 playerLayer 的大小和位置不正确。

AVPlayer 使用本地 mp4 视频设置，AVPlayerLayer 使用该播放器初始化。然后该图层作为子图层添加到父 View 。

这是我的代码:

func playIntro() {
    let path = NSBundle.mainBundle().pathForResource("intro", ofType: "mp4")
    let url  = NSURL.fileURLWithPath(path!)
    let introPlayer           = AVPlayer(URL: url)
    introPlayer.allowsExternalPlayback = false

    var introPlayerLayer = AVPlayerLayer(player: introPlayer)
    introView.layer.addSublayer(introPlayerLayer)
    introPlayerLayer.frame = introView.bounds

    NSNotificationCenter.defaultCenter().addObserver(self, selector: "playerDidFinishPlaying:", name: AVPlayerItemDidPlayToEndTimeNotification, object: introPlayer.currentItem)

    introView.hidden = false
    introPlayer.play()
}

我应该将 AVPlayerLayer 添加为 UIView 的子层，还是应该子类化父容器 (UIView)，如图所示在 https://developer.apple.com/library/ios/documentation/AudioVideo/Conceptual/AVFoundationPG/Articles/02_Playback.html 的“玩家 View ”部分.如果是这样，我将如何在 Swift 中编写 PlayerView 子类(在 Objective-C 中显示)？预先感谢您的任何帮助。

Answer 1

swift 3。

private func playVideo() {
        guard let path = Bundle.main.path(forResource: "video", ofType:"mp4") else {
            debugPrint("video.m4v not found")
            return
        }
        let player = AVPlayer(url: URL(fileURLWithPath: path))
        var playerLayer: AVPlayerLayer?
        playerLayer = AVPlayerLayer(player: player)
        playerLayer?.videoGravity = AVLayerVideoGravityResizeAspectFill
        playerLayer!.frame = self.view.frame
        self.view!.layer.addSublayer(playerLayer!)
        player.play()

    }