如何检测AVPlayerItem何时完成播放？

问题描述

我一直在查看 AVPlayerItem 和 AVPlayer 文档，似乎没有任何回调当项目完成播放时。我希望我们可以使用某种委托回调，或者 AVPlayerActionAtItemEnd 会为我们提供自定义操作。

I've been looking through the AVPlayerItem and AVPlayer docs and there doesn't seem to be any callbacks for when the item is finished playing. I was hoping that there would be some sort of delegate callback that we can utilize or that AVPlayerActionAtItemEnd would provide a custom action for us to write.

我怎样才能找到一种方法来检测AVPlayer何时播放完一个项目？

How can i figure out a way to detect when AVPlayer has finished playing an item?

推荐答案

它使用 NSNotification 在播放结束时发出警报。

It uses NSNotification to alert when playback is finished.

注册通知：

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

完成后调用的方法：

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

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