ios - 如何在 MPMediaPlaylist 中获取 MPMediaItem 顺序？

Question

我正在寻找 MPMediaItem 属性，该属性允许我按照它在音乐应用程序中显示的顺序对我的 MPMediaPlaylist 项目数组进行排序。任何人？谢谢。

Answer 1

这是相当微不足道的，虽然不是很明显。获得播放列表后，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("\t\t", songTitle!)
        }