如何檢測AVPlayerItem何時完成播放？

Question

我一直在尋找通過AVPlayerItem和AVPlayer文檔，並且似乎沒有任何回調項目完成播放時。我希望能有某種代表回撥，我們可以利用，或者AVPlayerActionAtItemEnd會爲我們提供一個自定義操作。

我怎樣才能找出一種方法來檢測AVPlayer何時完成播放項目？

Answer 1

它使用NSNotification在播放完成時發出警報。完成後調用

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

方法：爲通知

註冊

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

Answer 2

斯威夫特-I-田間（第3版）

class MyVideoPlayingViewController: AVPlayerViewController { 

    override func viewDidLoad() { 
     // Do any additional setup after loading the view. 
     super.viewDidLoad() 

     let videoURL = URL(fileURLWithPath: Bundle.main.path(forResource: "MyVideo", 
                    ofType: "mp4")!) 
     player = AVPlayer(url: videoURL) 

     NotificationCenter.default.addObserver(self, 
              selector: #selector(MyVideoPlayingViewController.animationDidFinish(_:)), 
              name: .AVPlayerItemDidPlayToEndTime, 
              object: player?.currentItem) 
    } 

    override func viewDidAppear(_ animated: Bool) { 
     super.viewDidAppear(animated) 
     player?.play() 
    } 

    func animationDidFinish(_ notification: NSNotification) { 
     print("Animation did finish") 
    } 

    deinit { 
     NotificationCenter.default.removeObserver(self) 
    } 

} 

Answer 3

這是我如何做它。

[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(movieFinishedCallback:) name:AVPlayerItemDidPlayToEndTimeNotification object:player.currentItem]; 


- (void)movieFinishedCallback:(NSNotification*)aNotification 
{ 
    // [self dismissViewControllerAnimated:YES completion:Nil]; 
}