AVAudioSession *audioSession = [AVAudioSession sharedInstance];    //默认情况下扬声器播放    [audioSession setCategory:AVAudioSessionCategoryPlayback error:nil];    [audioSession setActive:YES error:nil];

- (void)viewWillAppear:(BOOL)animated{    [super viewWillAppear:YES];    // 开始接受远程控制    [[UIApplication sharedApplication] beginReceivingRemoteControlEvents];    [self resignFirstResponder];  }- (void)viewWillDisappear:(BOOL)animated{// 接触远程控制    [[UIApplication sharedApplication] endReceivingRemoteControlEvents];    [self becomeFirstResponder];}// 重写父类成为响应者方法- (BOOL)canBecomeFirstResponder{    return YES;}

//重写父类方法，接受外部事件的处理- (void) remoteControlReceivedWithEvent: (UIEvent *) receivedEvent {    NSLog(@"remote");    if (receivedEvent.type == UIEventTypeRemoteControl) {                switch (receivedEvent.subtype) { // 得到事件类型                            case UIEventSubtypeRemoteControlTogglePlayPause: // 暂停 ios6                [self.player pause]; // 调用你所在项目的暂停按钮的响应方法 下面的也是如此                break;                            case UIEventSubtypeRemoteControlPreviousTrack:  // 上一首                                [self lastMusic:nil];                break;                            case UIEventSubtypeRemoteControlNextTrack: // 下一首                [self nextMusic:nil];                break;                            case UIEventSubtypeRemoteControlPlay: //播放                [self playMusic:nil];                break;                            case UIEventSubtypeRemoteControlPause: // 暂停 ios7                [self playMusic:nil];                break;                            default:                break;        }    }}

//Now Playing Center可以在锁屏界面展示音乐的信息，也达到增强用户体验的作用。////传递信息到锁屏状态下 此方法在播放歌曲与切换歌曲时调用即可- (void)configNowPlayingCenter {    NSLog(@"锁屏设置");   // BASE_INFO_FUN(@"配置NowPlayingCenter");    NSMutableDictionary * info = [NSMutableDictionary dictionary];    //音乐的标题    [info setObject:self.nameLabel.text forKey:MPMediaItemPropertyTitle];    //音乐的艺术家   NSString *author= [[self.playlistArr[self.currentNum] valueForKey:@"songinfo"] valueForKey:@"author"];    [info setObject:author forKey:MPMediaItemPropertyArtist];    //音乐的播放时间    [info setObject:@(self.player.currentTime.value) forKey:MPNowPlayingInfoPropertyElapsedPlaybackTime];    //音乐的播放速度    [info setObject:@(1) forKey:MPNowPlayingInfoPropertyPlaybackRate];    //音乐的总时间    [info setObject:@(self.totalTime) forKey:MPMediaItemPropertyPlaybackDuration];    //音乐的封面    MPMediaItemArtwork * artwork = [[MPMediaItemArtwork alloc] initWithImage:[UIImage imageNamed:@"0.jpg"]];    [info setObject:artwork forKey:MPMediaItemPropertyArtwork];    //完成设置    [[MPNowPlayingInfoCenter defaultCenter]setNowPlayingInfo:info];}