小编Gug*_*vel的帖子

我正在尝试从 MediaStore 查询设备中的播放列表。我关注了之前提出的一个问题，但没有得到答案。

这就是我查询播放列表的方式

public void addToPlaylist(long playlistId, Context context,
                          ArrayList<Play> playlistTracks, String playlistName) {
    int count = getPlaylistSize(playlistId, context);
    Log.d("playlist size=", "" + count);

    ContentValues[] values = new ContentValues[playlistTracks.size()];
    for (int i = 0; i < playlistTracks.size(); i++) {
        values[i] = new ContentValues();
        values[i].put(MediaStore.Audio.Playlists.Members.PLAY_ORDER, i
                      + count + 1);
        values[i].put(MediaStore.Audio.Playlists.Members.AUDIO_ID,
                      playlistTracks.get(i).getId());
        values[i].put(MediaStore.Audio.Playlists.NAME, playlistName);
    }
    ContentResolver resolver = context.getContentResolver();
    Uri uri = MediaStore.Audio.Playlists.Members.getContentUri("external",
                                                               playlistId);
    int num = resolver.bulkInsert(uri, values); 
    Log.d("songs added=", "" + num); // added
    resolver.notifyChange(Uri.parse("content://media"), null);

}

private …