Ios AVPlayerViewController在播放后退出全屏

您好，我用avplayervewcontroller替换了MPMoviePlayerController，因为MPMoviePlayerController已被弃用。 我快到了，但有一个问题。我的电影以视图中的视图开始。当全屏播放时，我希望它在播放结束后跳回无全屏状态。但我不知道怎么做。这是我的代码：

- (void)viewDidLoad {

// grab a local URL to our video
NSURL *videoURL = [[NSBundle mainBundle]URLForResource:@"movie" withExtension:@"m4v"];

// create an AVPlayer
AVPlayer *player = [AVPlayer playerWithURL:videoURL];

// create a player view controller
self.controller = [[AVPlayerViewController alloc]init];
controller.player = player;
[player play];


// show the view controller
[self addChildViewController:controller];
[self.view addSubview:controller.view];
controller.view.frame = CGRectMake(0,25, 750, 422);

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(itemDidFinishPlaying:) name:AVPlayerItemDidPlayToEndTimeNotification object:player];
}

    - (void) playerPlaybackDidFinish:(NSNotification*)notification{
// movie finished playing
[moviePlayerController setFullscreen:NO];
}

使用MPMoviePlayer时，它通常使用以下代码：

- (void)viewDidLoad {

// grab a local URL to our video
NSURL *videoURL = [[NSBundle mainBundle]URLForResource:@"movie" withExtension:@"m4v"];

// create an AVPlayer
AVPlayer *player = [AVPlayer playerWithURL:videoURL];

// create a player view controller
self.controller = [[AVPlayerViewController alloc]init];
controller.player = player;
[player play];


// show the view controller
[self addChildViewController:controller];
[self.view addSubview:controller.view];
controller.view.frame = CGRectMake(0,25, 750, 422);

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(itemDidFinishPlaying:) name:AVPlayerItemDidPlayToEndTimeNotification object:player];
}

    - (void) playerPlaybackDidFinish:(NSNotification*)notification{
// movie finished playing
[moviePlayerController setFullscreen:NO];
}

我需要用什么代码替换它？？

-(void)itemDidFinishPlaying:(NSNotification *) notification {
// Will be called when AVPlayer finishes playing playerItem
 ???????????}

谢谢，Meg

#iOS 10及更高版本和Swift

4.2

此代码正在运行

在player init方法中编写此代码

if #available(iOS 11.0, *) {
      self.playerVC?.exitsFullScreenWhenPlaybackEnds = true
 }

NotificationCenter.default.addObserver(self, selector: #selector(self.playerItemDidReachEnd(notification:)), name: .AVPlayerItemDidPlayToEndTime, object:self.playerVC?.player!.currentItem)

我是你的通知代表

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

可能重复？