如何在MPMediaPlaylist中获取MPMediaItem顺序

Question

我正在寻找MPMediaItem属性，该属性允许我按照音乐应用程序中显示的顺序对MPMediaPlaylist项数组进行排序。任何人谢谢

Answer 1

这是相当琐碎的，尽管不是很明显。一旦您有了播放列表，只需调用items属性而不是collections。

例如：

MPMediaPlaylist *playlist = //..
// Loop through the items in the original order
for (MPMediaItem *item in playlist.items) {
    NSLog(@"item: %@", item.title);
}
// Loop through the items sorted by title
for (MPMediaItemCollection *collection in playlist.collections) {
    NSLog(@"collection: %@", collection.title);
}

Answer 2

        let myPlaylistQuery = MPMediaQuery.playlists()
    let playlists = myPlaylistQuery.collections
    print(playlists as Any)
    for playlist in playlists! {
        print(playlist.value(forProperty: MPMediaPlaylistPropertyName)!)
        let songs = playlist.items
        for song in songs {
            let songTitle = song.value(forProperty: MPMediaItemPropertyTitle)
            print("tt", songTitle!)
        }