扫描IPHONE本地音乐文件，获得音乐名，歌手名代码示例

//扫描本地音乐文件，返回艺术家列表 需要库MediaPlayer.framework  
-(NSArray*) findArtistList {  
    NSMutableArray *artistList = [[NSMutableArray alloc]init];  
    MPMediaQuery *listQuery = [MPMediaQuery playlistsQuery];//播放列表  
    NSArray *playlist = [listQuery collections];//播放列表数组  
    for (MPMediaPlaylist * list in playlist) {  
        NSArray *songs = [list items];//歌曲数组  
        for (MPMediaItem *song in songs) {  
            NSString *title =[song valueForProperty:MPMediaItemPropertyTitle];//歌曲名  
            //歌手名  
            NSString *artist =[[song valueForProperty:MPMediaItemPropertyArtist] uppercaseString];  
            if(artist!=nil&&![artistList containsObject:artist]){  
                [artistList addObject:artist];  
            }  
        }  
    }  
    return artistList;  
}