不是使用-(void)remoteControlReceivedWithEvent:(UIEvent *)event来跟踪控件，而是使用MPRemoteCommandCenter将目标添加到每个控件中:

Instead of using -(void)remoteControlReceivedWithEvent:(UIEvent *)event to track for the controls, use MPRemoteCommandCenter adding targets to each one of the controls:

注意:在分配目标之前启用控件很重要.

Note: It's important to enable the controls before assigning a target.

[MPRemoteCommandCenter sharedCommandCenter].playCommand.enabled = YES;
[[MPRemoteCommandCenter sharedCommandCenter].playCommand addTarget:self action:@selector(remotePlay)];

[MPRemoteCommandCenter sharedCommandCenter].pauseCommand.enabled = YES;
[[MPRemoteCommandCenter sharedCommandCenter].pauseCommand addTarget:self action:@selector(remoteStop)];

[MPRemoteCommandCenter sharedCommandCenter].previousTrackCommand.enabled = YES;
[[MPRemoteCommandCenter sharedCommandCenter].previousTrackCommand addTarget:self action:@selector(loadPreviousSong)];

[MPRemoteCommandCenter sharedCommandCenter].nextTrackCommand.enabled = YES;
[[MPRemoteCommandCenter sharedCommandCenter].nextTrackCommand addTarget:self action:@selector(loadNextSong)];

选择器:

-(void) remotePlay {
    [APP_DELEGATE PlayPauseMusic:nil];
}
-(void) remoteStop {
    [APP_DELEGATE PlayPauseMusic:nil];
}
-(void) loadNextSong {
    [APP_DELEGATE next:nil];
}
-(void) loadPreviousSong {
    [APP_DELEGATE previous:nil];
}