AVPlayerViewController确实退出了全屏

Question

I'm trying to know when an AVPlayerViewController was dismissed or exited full screen in order to change its parent view controller layout but I'm having no luck finding a delegate method that tells me when it happens.

I've tried adding an observer on the view controller like so:

player = AVPlayer(URL: NSURL(fileURLWithPath: videoPath))
playerController = AVPlayerViewController()
playerController?.delegate = self
playerController!.player = player

playerController?.contentOverlayView?.addObserver(self, forKeyPath: "bounds", options: NSKeyValueObservingOptions.New, context: nil)
addChildViewController(playerController!)

but it's never triggered.

I just want to know when playerController is being dismissed or user exited full screen.

Answer 1

You can handle it in the parent view controller's viewWillAppear: method.

func viewWillAppear(_ animated: Bool) {
    super.viewWillAppear(animated)

    if let playerController = playerController {
        // handle exit of playerController here...
    }
}

Answer 2

如果要跟踪用户退出全屏或视频状态，则可以使用MPMoviePlayerController。