     // No selection clause
                        null,            // No selection arguments
                        null             // Default sort order
        );
        default:
            // An invalid id was passed in
            return null;
    }
}
</pre>
<p>
    Once the background framework has the object, it starts the query in the background. When the
    query is done, the background framework calls
    <code><a href="../../reference/android/support/v4/app/LoaderManager.LoaderCallbacks.htm