Question

在NSNotificationCenter和playerItemDidReachEnd的帮助下，我使用AVFoundation视频播放视频：

    AVURLAsset *asset = [AVURLAsset URLAssetWithURL:url options:nil];
    self.playerItem = [AVPlayerItem playerItemWithAsset:asset];
    self.avPlayer = [AVPlayer playerWithPlayerItem:self.playerItem];

    [self.avPlayer      addObserver:self forKeyPath:@"status"
                        options:0 context:AVMoviePlayerViewControllerStatusObservationContext];
    [[NSNotificationCenter defaultCenter]           addObserver:self
                                                    selector:@selector(playerItemDidReachEnd:)
                                                    name:AVPlayerItemDidPlayToEndTimeNotification
                                                    object:[self.avPlayer currentItem]];

    [self.VideoView setPlayer:self.avPlayer];

和

- (void)playerItemDidReachEnd:(NSNotification *)notification {        
        [notification.object seekToTime:kCMTimeZero];
        [self startVideoLoop];
}

效果很好 - 但遗憾的是不可靠。有些时候没有任何逻辑原因（在我看来），播放器在电影结束时停止而不重新开始。

是否有可能NSNotificationCenter错过了电影的结尾或者方法playerItemDidReachEnd错过了通知消息？愚蠢的问题。但是我无法做出头脑或尾巴...

Answer 1

答案是

self.avPlayer.actionAtItemEnd = AVPlayerActionAtItemEndNone;  // default: AVPlayerActionAtItemEndPause

为什么我不能依靠使用AVFoundation循环视频的NSNotificationCenter？

1 个答案: