TopAndRecentlyPlayedTracksLoader.java 文件源码

@Nullable
public static Cursor makeRecentTracksCursorAndClearUpDatabase(@NonNull final Context context) {
    SortedLongCursor retCursor = makeRecentTracksCursorImpl(context);

    // clean up the databases with any ids not found
    if (retCursor != null) {
        ArrayList<Long> missingIds = retCursor.getMissingIds();
        if (missingIds != null && missingIds.size() > 0) {
            for (long id : missingIds) {
                HistoryStore.getInstance(context).removeSongId(id);
            }
        }
    }
    return retCursor;
}