给定Android音乐播放列表名称,如何找到播放列表中的歌曲？

Question

可以通过查询找到播放列表名称MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI ,然后查看该MediaStore.Audio.PlaylistsColumns.NAME列.还有一个数据列,MediaStore.Audio.PlaylistsColumns._DATA,但它返回null.

歌曲列表(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI/id)似乎没有显示任何播放列表关联.

Answer 1

这是我的程序中的一点:

要点是您需要播放列表的ID来抓取歌曲.

基本上你可以把我的代码和where语句改为.NAME +"='"+ name +"'",

private Cursor getPlaylists(String playlistId){
         Cursor cursor = null;

 String[] projection1 = {
        MediaStore.Audio.Playlists._ID,
        MediaStore.Audio.Playlists.NAME
     };

     cursor = this.managedQuery(
        MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI,
        projection1,
        MediaStore.Audio.Playlists._ID+ " = "+playlistId+"",
        null,
        null);
startManagingCursor(cursor);
cursor.moveToFirst();
   playlist_id = cursor.getString(0);
   playlist_id2 = cursor.getLong(0);

           if(playlist_id2 > 0){
           String[] projection = {
                   MediaStore.Audio.Playlists.Members.AUDIO_ID,
                   MediaStore.Audio.Playlists.Members.ARTIST,
                   MediaStore.Audio.Playlists.Members.TITLE,
                    MediaStore.Audio.Playlists.Members._ID



                };
           cursor = null;
                cursor = this.managedQuery(
                    MediaStore.Audio.Playlists.Members.getContentUri("external",playlist_id2 ),
                    projection,
                    MediaStore.Audio.Media.IS_MUSIC +" != 0 ",
                    null,
                    null);

           }
           cManager(cursor,2,1);
           return cursor;
       }