Querying Playlist from MediaStore

Question

I\'m trying to query playlists in the device from MediaStore. I have followed a question asked before but I didn\'t get the answer.

This is how I query for playlist

Answer 1

the simple way to create a playlist is :

            public void addnewPlaylist(Context context, String newplaylist) {
    ContentResolver resolver = context.getContentResolver();
    ContentValues values = new ContentValues(1);
    values.put(MediaStore.Audio.Playlists.NAME, newplaylist);
    resolver.insert(uri, values);

}

then populate the playlist:

    public void addTrackToPlaylist(Context context, String audio_id,
    long playlist_id, int pos) {
    Uri newuri = MediaStore.Audio.Playlists.Members.getContentUri(
            "external", playlist_id);
    ContentResolver resolver = context.getContentResolver();
    ContentValues values = new ContentValues();
        values.put(MediaStore.Audio.Playlists.Members.PLAY_ORDER, pos);
        values.put(MediaStore.Audio.Playlists.Members.AUDIO_ID, audio_id);
        values.put(MediaStore.Audio.Playlists.Members.PLAYLIST_ID,
                playlist_id);
        resolver.insert(newuri, values);

}

Looking at your code, you do not build the correct structure. A playlist does not hold the playlist name, simply the Playlist_id.

To return all your playlists :

        public Cursor getandroidPlaylistcursor(Context context) {
    ContentResolver resolver = context.getContentResolver();
    final String id = MediaStore.Audio.Playlists._ID;
    final String name = MediaStore.Audio.Playlists.NAME;
    final String[] columns = { id, name };
    final String criteria = null
    return  resolver.query(uri, columns, criteria, null,
            name + " ASC");

}

Answer 2

Example to populate an array :

           Cursor cursor = plist.getPlaylistTracks(getActivity(), playlist_id);
     // replace with your own method to get cursor
    ArrayList<String> audio_ids = new ArrayList<String>();

    // build up the array with audio_id's
    int i = 0;
    if (cursor != null && cursor.moveToFirst()) {
        for (cursor.moveToFirst(); !cursor.isAfterLast(); cursor.moveToNext()) {
            String audio_id = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Playlists.Members.AUDIO_ID));
            audio_ids.add(audio_id);
        }

Make sure that when you assign audio_id (or your own variable) you use the correct MediaStore uri as used when you obtained the cursor. The column names in your cursor determine what you can get here.

Answer 3

to answer a question from kh3e: when dealing with playlists and playlist members

   public Uri get_audio_playlists_uri(){
    Uri uri_to_use = null;
    //     int bld = Build.VERSION.SDK_INT;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
        uri_to_use = MediaStore.Audio.Playlists.getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY);
    } else {
        uri_to_use = MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI;
    }
    return uri_to_use;
}

public Uri get_audio_playlist_members_uri(long playlist_id){

    Uri uri_to_use = null;
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
        uri_to_use   = MediaStore.Audio.Playlists.getContentUri(MediaStore.VOLUME_EXTERNAL_PRIMARY)
                .buildUpon()
                .appendEncodedPath(Long.toString(playlist_id))
                .appendEncodedPath("members")
                .build();
    } else {
        uri_to_use = MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI
                .buildUpon()
                .appendEncodedPath(Long.toString(playlist_id))
                .appendEncodedPath("members")
                .build();
    }
    return uri_to_use;
}