Swift AVPlayerItem完成后关闭 [英] Swift AVPlayerItem close when finished

问题描述

我对Swift和iOS开发非常陌生，所以请原谅我的无知.

I'm extremely new to Swift and iOS development, so please forgive my ignorance.

我正在尝试在视频播放完毕后自动关闭AVPlayer.我曾考虑附加"playerDidFinishPlaying"侦听器以接收通知，但是一旦收到通知，便找不到关闭控制器的方法/事件.我希望模仿单击完成"按钮的操作.

I'm trying to have the AVPlayer close automatically when the video is done playing. I've thought to attach the "playerDidFinishPlaying" listener to receive the notification, but once I have it, I can't find the method/event to close the Controller. I'm looking to mimic the action of clicking the "Done" button.

这是一小段代码.希望这是足够的信息.如果没有，我可以提供更多信息

Here is a small snippet of code. Hopefully this is enough information. If not, I can provide further info

let destination = segue.destinationViewController as! AVPlayerViewController
let url = NSURL(string: "video url")
destination.player = AVPlayer(URL: url!)
destination.player?.play()

我添加了以下通知，但是同样，一旦获得通知，我不确定该怎么做...

I've added the following notification, but again, I'm not sure what to do with it once I have it...

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

func playerDidFinishPlaying(note:NSNotification){
    print("finished")
    // close window/controller
}

最后，我知道我需要删除观察者，但是我不确定何时何地这样做.任何帮助将不胜感激.

Lastly, I know I'll need to remove the observer, but I'm not sure when or where to do so. Any help is greatly appreciated.

推荐答案

要关闭"控制器，应调用dismissViewControllerAnimated(true, completion: nil)

In order to "close" the controller, you should call dismissViewControllerAnimated(true, completion: nil)

因此代码如下:

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

func playerDidFinishPlaying(note:NSNotification){
    print("finished")
    dismissViewControllerAnimated(true, completion: nil)
}

如果您的viewController位于UINavigationController堆栈中，则还可以执行以下操作:

if your viewController is inside of a UINavigationController stack, you can also do:

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

func playerDidFinishPlaying(note:NSNotification){
    print("finished")
    navigationController?.popViewControllerAnimated(true)
}

要删除观察者，您可以在deinit{}内执行:

And for remove the observer, you can do within deinit{}:

deinit {
    NSNotificationCenter.defaultCenter().removeObserver(self)
}

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