iOS中关于音乐锁屏控制音乐(锁屏信息设置)的实例代码

 <pre name="code" class="objc">appDelegate里面加入如下代码获取后台播放权限</pre><pre name="code" class="objc">- (void)setAudioBackstagePlay{   AVAudioSession *audioSession = [AVAudioSession sharedInstance];   [audioSession setCategory:AVAudioSessionCategoryPlayback error:nil];   [audioSession setActive:YES error:nil]; }</pre> <pre></pre> <pre name="code" class="objc">//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         [_player musicPause]; // 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];         break;       case UIEventSubtypeRemoteControlNextTrack: // 下一首         [self nextMusic];         break;       case UIEventSubtypeRemoteControlPlay: //播放         [_player musicPlay];         break;       case UIEventSubtypeRemoteControlPause: // 暂停 ios7         [_player musicPause];         break;       default:         break;     }   } }</pre><pre name="code" class="objc"><pre name="code" class="objc">- (void)configNowPlayingCenter {   NSLog(@"锁屏设置"); //   BASE_INFO_FUN(@"配置NowPlayingCenter");   YBVideoListModel * list = _model.audioList[_currentIndexPath.row];</pre><pre name="code" class="objc"><span style="white-space:pre">  </span>//以下代码是加载锁屏显示网络图片以及其他设置   [[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];     //音乐的标题     [info setObject:list.title forKey:MPMediaItemPropertyTitle];     //音乐的艺术家     NSString *author= list.singer;     [info setObject:author forKey:MPMediaItemPropertyArtist];     //音乐的播放时间     [info setObject:@(_player.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:@(list.duration) forKey:MPMediaItemPropertyPlaybackDuration];     //音乐的封面     MPMediaItemArtwork * artwork = [[MPMediaItemArtwork alloc] initWithImage:image];     [info setObject:artwork forKey:MPMediaItemPropertyArtwork];     //完成设置     [[MPNowPlayingInfoCenter defaultCenter]setNowPlayingInfo:info];   }]; }</pre><br> <br> <pre></pre> <br> </pre>