我设置 AVPlayerLayer :
audioPlayer = [[AVPlayer alloc]initWithURL:[NSURL fileURLWithPath:fileName]];
avPlayerLayer = [AVPlayerLayer playerLayerWithPlayer:audioPlayer];
[avPlayerLayer setFrame:self.view.bounds];
[[self.view layer] addSublayer:avPlayerLayer];
[audioPlayer play];
在 AppDelegete 我添加:
[[AVAudioSession sharedInstance] setDelegate:self];
[[AVAudioSession sharedInstance] setCategory:AVAudioSessionCategoryPlayback error:nil];
[[AVAudioSession sharedInstance] setActive: YES error: nil];
现在在 UIViewController 类中我添加:
-(void)viewDidAppear:(BOOL)animated{
[super viewDidAppear:animated];
[[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
[self becomeFirstResponder];
}
- (BOOL)canBecomeFirstResponder {
return YES;
}
- (void)remoteControlReceivedWithEvent:(UIEvent *)event {
switch (event.subtype) {
case UIEventSubtypeRemoteControlTogglePlayPause:
if (audioPlayer.rate == 0.0) {
[avPlayerLayer.player play];
} else {
[avPlayerLayer.player pause];
}
NSLog(@"4");
break;
case UIEventSubtypeRemoteControlPlay:
[avPlayerLayer.player play];
break;
case UIEventSubtypeRemoteControlPause:
[avPlayerLayer.player pause];
NSLog(@"3");
break;
case UIEventSubtypeRemoteControlNextTrack:
[self didPressNextSong:nil];
NSLog(@"2");
break;
case UIEventSubtypeRemoteControlPreviousTrack:
[self didPressLastSong:nil];
NSLog(@"1");
break;
default:
break;
}
}
现在的问题是,当我进入后台模式时,歌曲停止播放,但是当我按下遥控器中的播放按钮(当我双击主页按钮时弹出的菜单)时,歌曲继续从它停止的地方播放。
知道为什么我有这个问题吗?