第一步 設置：

屏幕快照 2017-07-03 下午7.53.13.png

第二步：Appdelegate

• (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
  [[UIApplication sharedApplication] beginReceivingRemoteControlEvents];
  }
• (void)applicationWillResignActive:(UIApplication *)application {
  //一般在方法：application: didFinishLaunchingWithOptions:設置
  //獲取音頻會話
  AVAudioSession *session = [AVAudioSession sharedInstance];
  //設置類型是播放草添。
  [session setCategory:AVAudioSessionCategoryPlayback error:nil];
  //激活音頻會話驶兜。
  [session setActive:YES error:nil];
  }

pragma mark - 后臺顯示播放信息

• (void)setPlayingInfoTotalSeconds:(CGFloat)totalSeconds AndCurrentSecond:(CGFloat)currentSecond AndPlaybackRate:(NSObject *)playbackRate{
  // <MediaPlayer/MediaPlayer.h>
  NSIndexPath * selectedIndexPath = [self.tableViewPlain indexPathForSelectedRow];
  RSHomeMusicModel * musicModel = _dataSource[selectedIndexPath.row];
  // 1.獲取鎖屏中心
  MPNowPlayingInfoCenter *playingInfoCenter = [MPNowPlayingInfoCenter defaultCenter];

  //初始化一個存放音樂信息的字典
  NSMutableDictionary *playingInfoDict = [NSMutableDictionary dictionary];
  // 2、設置歌曲名
  [playingInfoDict setObject:musicModel.musicName forKey:MPMediaItemPropertyAlbumTitle];

  // 設置歌手名
  [playingInfoDict setObject:musicModel.singerName forKey:MPMediaItemPropertyArtist];

  // 3設置封面的圖片
  // UIImage *image = [self getMusicImageWithMusicId:self.currentModel];
  // if (image) {
  MPMediaItemArtwork *artwork = [[MPMediaItemArtwork alloc] initWithImage:[UIImage imageNamed:@"l6_1_home_img_01"]];
  [playingInfoDict setObject:artwork forKey:MPMediaItemPropertyArtwork];

  // 4設置歌曲的總時長
  [playingInfoDict setObject:@(totalSeconds) forKey:MPMediaItemPropertyPlaybackDuration];
  // 當前播放時間
  [playingInfoDict setObject:@(currentSecond) forKey:MPNowPlayingInfoPropertyElapsedPlaybackTime];
  //速度
  [playingInfoDict setObject:playbackRate forKey:MPNowPlayingInfoPropertyPlaybackRate];

  //音樂信息賦值給獲取鎖屏中心的nowPlayingInfo屬性
  playingInfoCenter.nowPlayingInfo = playingInfoDict;

  // 5.開啟遠程交互远寸，只有開啟這個才能進行遠程操控
  [[UIApplication sharedApplication] beginReceivingRemoteControlEvents];

}

//監(jiān)聽遠程交互方法

• (void)remoteControlReceivedWithEvent:(UIEvent *)event
  {
  switch (event.subtype) {
  //播放
  case UIEventSubtypeRemoteControlPlay:{

        NSIndexPath * selectedIndexPath = [self.tableViewPlain indexPathForSelectedRow];
        RSHomeMusicModel * musicModel = _dataSource[selectedIndexPath.row];
  
        [self setPlayingInfoTotalSeconds:musicModel.totalSeconds  AndCurrentSecond:musicModel.currentSecond AndPlaybackRate:@(1)];
  
            [_audioTool jk_play];
    }
        break;
        //停止
    case UIEventSubtypeRemoteControlPause:{
    
        NSIndexPath * selectedIndexPath = [self.tableViewPlain indexPathForSelectedRow];
        RSHomeMusicModel * musicModel = _dataSource[selectedIndexPath.row];
  
        [self setPlayingInfoTotalSeconds:musicModel.totalSeconds  AndCurrentSecond:musicModel.currentSecond AndPlaybackRate:@(0)];
        NSLog(@"當前模型播放時間 : %f",musicModel.totalSeconds);
        _playButton.selected = NO;
        [_audioTool jk_pause];
        
    }
        break;
        //下一首
    case UIEventSubtypeRemoteControlNextTrack:
        [self nextButtonClick];
        
        break;
        //上一首
    case UIEventSubtypeRemoteControlPreviousTrack:
        [self previousButtonClick];
        
        break;
        
    default:
        break;
  

  }
  }