iOS中關於音樂鎖屏控制音樂(鎖屏信息設置)怎麼實現？本文介紹了iOS中關於音樂鎖屏控制音樂(鎖屏信息設置)的實例代碼，有興趣的同學可以看看  代碼如下 復制代碼 <pre name="code"class="objc">appDelegate裡面加入如下代碼獲取後台播放權限</pre><pre name="code"class="objc">- (void)setAudioBackstagePlay{

  AVAudioSession *audioSession = [AVAudioSession sharedInstance];

  [audioSession setCategory:AVAudioSessionCategoryPlayback error:nil];

  [audioSession setActive:YES error:nil];

}</pre>

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<pre name="code"class="objc">//重寫父類方法，接受外部事件的處理

- (void) remoteControlReceivedWithEvent: (UIEvent *) receivedEvent {

  NSLog(@"remote");

  if(receivedEvent.type == UIEventTypeRemoteControl) {

    switch(receivedEvent.subtype) {// 得到事件類型

      caseUIEventSubtypeRemoteControlTogglePlayPause:// 暫停 ios6

        [_player musicPause];// 調用你所在項目的暫停按鈕的響應方法 下面的也是如此

        break;

      caseUIEventSubtypeRemoteControlPreviousTrack:// 上一首

        [self lastMusic];

        break;

      caseUIEventSubtypeRemoteControlNextTrack:// 下一首

        [self nextMusic];

        break;

      caseUIEventSubtypeRemoteControlPlay://播放

        [_player musicPlay];

        break;

      caseUIEventSubtypeRemoteControlPause:// 暫停 ios7

        [_player musicPause];

        break;

      default:

        break;

    }

  }

}</pre><pre name="code"class="objc"><pre name="code"class="objc">- (void)configNowPlayingCenter {

  NSLog(@"鎖屏設置");

//   BASE_INFO_FUN(@"配置NowPlayingCenter");

  YBVideoListModel * list = _model.audioList[_currentIndexPath.row];</pre><pre name="code"class="objc"><span style="white-space:pre">  </span>//以下代碼是加載鎖屏顯示網絡圖片以及其他設置

  [[SDWebImageManager sharedManager] downloadImageWithURL:[NSURL URLWithString:list.thumbUrl] options:SDWebImageRetryFailed progress:nil completed:^(UIImage *image, NSError *error, SDImageCacheType cacheType, BOOL finished, NSURL *imageURL) {

    if(image == nil) {

      image = [UIImage imageNamed:@"default_music"];

    }

    NSMutableDictionary * info = [NSMutableDictionary dictionary];

    //音樂的標題

    [info setObject:list.title forKey:MPMediaItemPropertyTitle];

    //音樂的藝術家

    NSString *author= list.singer;

    [info setObject:author forKey:MPMediaItemPropertyArtist];

    //音樂的播放時間

    [info setObject:@(_player.player.currentTime.value) forKey:MPNowPlayingInfoPropertyElapsedPlaybackTime];

    //音樂的播放速度

    [info setObject:@(1) forKey:MPNowPlayingInfoPropertyPlaybackRate];

    //音樂的總時間

    [info setObject:@(list.duration) forKey:MPMediaItemPropertyPlaybackDuration];

    //音樂的封面

    MPMediaItemArtwork * artwork = [[MPMediaItemArtwork alloc] initWithImage:image];

    [info setObject:artwork forKey:MPMediaItemPropertyArtwork];

    //完成設置

    [[MPNowPlayingInfoCenter defaultCenter]setNowPlayingInfo:info];

  }];

}</pre><br>

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