TimberUtils.java 文件源码

public static final int getSongCountForPlaylist(final Context context, final long playlistId) {
    Cursor c = context.getContentResolver().query(
            MediaStore.Audio.Playlists.Members.getContentUri("external", playlistId),
            new String[]{BaseColumns._ID}, MUSIC_ONLY_SELECTION, null, null);

    if (c != null) {
        int count = 0;
        if (c.moveToFirst()) {
            count = c.getCount();
        }
        c.close();
        c = null;
        return count;
    }

    return 0;
}