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;
}