使用MPMusicPlayerController播放MPMediaItemCollection,如何在播放结束时获取事件

Question

我使用的是MPMusicPlayerController打MPMediaItems的MPMediaItemCollection.如何在MPMediaItems完成比赛时发射一个事件？

谢谢!InterDev中

Answer 1

注册MPMusicPlayerControllerPlaybackStateDidChangeNotification通知:

[notificationCenter addObserver:self selector:@selector(handlePlaybackStateChanged:) name:MPMusicPlayerControllerPlaybackStateDidChangeNotification object:self.musicPlayer];

并告诉你的musicPlayerController生成这些通知:

[self.musicPlayerController beginGeneratingPlaybackNotifications];

在handlePlaybackStateChanged:你可以检查playbackStatemusicPlayerController 的属性:

- (void)handlePlaybackStateChanged:(NSNotitication*)notification
{
    if (self.musicPlayerController.playbackState == MPMusicPlaybackStateStopped ||
        self.musicPlayerController.playbackState == MPMusicPlaybackStateInterrupted ||
        self.musicPlayerController.playbackState == MPMusicPlaybackStatePaused) {
        // do your stuff
    }
}