iPhone，從Cocoa Touch獲取播放列表

Question

如何從代碼中獲取用戶播放列表的列表？在CocoaTouch中。

Answer 1

這是解決方案：

MPMediaQuery *playlistsQuery = [MPMediaQuery playlistsQuery]; 
NSArray *playlists = [playlistsQuery collections]; 

:)

Answer 2

MPMediaQuery *myPlaylistsQuery = [MPMediaQuery playlistsQuery]; 

NSArray *playlists = [myPlaylistsQuery collections]; 

for (MPMediaPlaylist *playlist in playlists) { 
    NSLog (@"%@", [playlist valueForProperty: MPMediaPlaylistPropertyName]); 
    NSArray *songs = [playlist items]; 
    for (MPMediaItem *song in songs) { 
     NSString *songTitle = 
      [song valueForProperty: MPMediaItemPropertyTitle]; 
     NSLog (@"\t\t%@", songTitle); 
    } 
}