- (BOOL)canBecomeFirstResponder
{
 return YES;
}
 
//鎖屏界面控制監(jiān)聽
- (void)remoteControlReceivedWithEvent:(UIEvent *)event
{
 if (event.type == UIEventTypeRemoteControl) {
  switch (event.subtype) {
   case UIEventSubtypeRemoteControlPlay:
   {
    //      
    NSLog(@"Play");
    break;
   }
   case UIEventSubtypeRemoteControlPause:
   {
    //暫停
    NSLog(@"Pause");
    break;
   }
   case UIEventSubtypeRemoteControlNextTrack:
   {
    //下一首
    NSLog(@"Next");
    break;
   }
   case UIEventSubtypeRemoteControlPreviousTrack:
   {
    //上一首
    NSLog(@"Previous");
    break;
   }
   default:
    break;
  }
 }
}

//設(shè)置鎖屏信息
- (void)setLockingInfo
{
 Class playingInfoCenter = NSClassFromString(@"MPNowPlayingInfoCenter");
 
 if (playingInfoCenter) {
  //音頻模型
  HWMusicModel *model = [HWMusicTool playingMusic];
  
  //數(shù)據(jù)信息
  NSMutableDictionary *songInfo = [[NSMutableDictionary alloc] init];
  
  //圖片
  MPMediaItemArtwork *albumArt = [[MPMediaItemArtwork alloc] initWithImage:[UIImage imageWithUrlString:model.icon]];
  [songInfo setObject:albumArt forKey:MPMediaItemPropertyArtwork];
  
  //當(dāng)前      時(shí)間
  [songInfo setObject:[NSNumber numberWithDouble:[[[HWMusicTool shareMusicTool] Player] currentPlaybackTime]] forKey:MPNowPlayingInfoPropertyElapsedPlaybackTime];
  //速率
  [songInfo setObject:[NSNumber numberWithFloat:1.0f] forKey:MPNowPlayingInfoPropertyPlaybackRate];
  //剩余時(shí)長(zhǎng)
  [songInfo setObject:[NSNumber numberWithDouble:[[[HWMusicTool shareMusicTool] Player] duration]] forKey:MPMediaItemPropertyPlaybackDuration];
  
  //設(shè)置標(biāo)題
  [songInfo setObject:model.title forKey:MPMediaItemPropertyTitle];
  
  //設(shè)置副標(biāo)題
  [songInfo setObject:@"周杰倫 - 周杰倫的床邊故事" forKey:MPMediaItemPropertyArtist];
  
  //設(shè)置音頻數(shù)據(jù)信息
  [[MPNowPlayingInfoCenter defaultCenter] setNowPlayingInfo:songInfo];
 }
}