Question

我想从iPod音乐目前的音乐播放中获取标题和艺术家名称但是我希望当音乐改变时我可以检测到并且UI标签正在改变

这是代码：

 - (IBAction)getTitlemusic
{
   // MPMediaItem * currentItem = self.musicPlayer.nowPlayingItem;


    MPMediaItem * song = [[MPMusicPlayerController iPodMusicPlayer] nowPlayingItem];
    NSString * album = [song valueForProperty:MPMediaItemPropertyAlbumTitle];
    NSString * title = [song valueForProperty:MPMediaItemPropertyTitle];
    NSString * artist = [song valueForProperty:MPMediaItemPropertyArtist];


    NSLog(@"%@,%@,%@", album,title,artist);

    songlabel.text = [NSString stringWithFormat:@"%@",album ];

    arttistlabel.text =  [NSString stringWithFormat:@"%@\r%@",title,artist];


      [self performSelector:@selector(getTitlemusic) withObject:nil afterDelay:10.0f];

}

我知道计时器和延迟不太好主意

Answer 1

MPMusicPlayerController *player = [MPMusicPlayerController iPodMusicPlayer];
[[NSNotificationCenter defaultCenter] addObserver:self
                                         selector:@selector(getTitlemusic)
                                             name:MPMusicPlayerControllerNowPlayingItemDidChangeNotification
                                           object:player];
[player beginGeneratingPlaybackNotifications];

使用此代码

iOS，当音乐改变时阅读标题音乐ipod

1 个答案: