註冊AVPlayer事件 - 怎麼知道AVPlayer播放完畢的電影

Question

我知道AVPlayerItem（AVPlayer的一個子類）能夠訂閱AVPlayerItemDidPlayToEndTimeNotification

AVPlayer不具備這樣的能力，我需要使用AVPlayer除非沒有辦法解決這個問題，並知道播放（我的視頻）是否完成。

如何在AVPlayer中執行此操作？我閱讀了這些課程的一些文檔，我沒有看到直接的答案。

-(void)setupVideoView{ 


    _videoPlayer = [AVPlayer playerWithURL:urlObjectHere]; 

    AVPlayerLayer *layer = [AVPlayerLayer layer]; 

    [layer setPlayer:_videoPlayer]; 
    [layer setFrame:_videoView.bounds]; 

    [_videoView.layer addSublayer:layer]; 

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




} 

-(void)itemDidFinishPlaying:(NSNotification *) notification { 
    // does not get called 

    DLog(@""); 



} 

Answer 1

我能夠通過以下方式解決問題：我使用AVPlayerItem並從該項目創建AVPlayer，訂閱通知給播放器項目。

-(void)setupVideoView{ 


    AVPlayerItem* playerItem = [AVPlayerItem playerItemWithURL:urlObjectHere];//edited 

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

    _videoPlayer = [[AVPlayer alloc] initWithPlayerItem:playerItem];//edited 

    AVPlayerLayer *layer = [AVPlayerLayer layer]; 

    [layer setPlayer:_videoPlayer]; 
    [layer setFrame:_videoView.bounds]; 

    [_videoView.layer addSublayer:layer]; 

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




} 

-(void)itemDidFinishPlaying:(NSNotification *) notification { 
    // gets called finally 


    AVPlayerItem *p = [notification object]; //bring video back to zero 
    [p seekToTime:kCMTimeZero]; 

    DLog(@""); 



} 

Answer 2

據我所知，沒有辦法知道AVPlayer圖層的完整時間。

AVAsset - AVPlayerItem - AVPlayer是AVFoundation中結合AVPlayer的三個組件。如果您想DIY AVPlayer的更多功能，您需要使用較低級別的AVPlayer，它們是AVAsset和AVPlayerItem。

如果您只需要AVPlayer的普通實用程序，只需在AVKit中使用AVPlayerViewController即可。

建議不要使用MPMoviePlayer，它的大部分已被棄用。適應AVPlayer ...