database operation in android loader

I'm using a LoaderManager, the onCreateLoader method creates a new CursorLoader.

    @Override
    public Loader<Cursor> onCreateLoader(int id, Bundle data) {
return new CursorLoader(context, CONTENT_URI, PROJECTION,
                null, null, null);
}

Only after loading is finished in onLoadFinished() the UI is updated. Every time I load the cusor I also need to do some database manipulation like building up a new sort index. This cannot be done asynchronously because the UI depends on this.

Is there a way to do such db operation within the loader? Or what is the best design for this problem?