What is cursor.setNotificationUri() used for?

Question

I did research on how to use ContentProviders and Loaders from this tutorial

How I see it: We have an Activity with ListView,

Answer 1

If you call Cursor.setNotificationUri(), Cursor will know what ContentProvider Uri it was created for.

CursorLoader registers its own ForceLoadContentObserver (which extends ContentObserver) with the Context's ContentResolver for the URI you specified when calling setNotificationUri.

So once that ContentResolver knows that URI's content has been changed [ this happens when you call getContext().getContentResolver().notifyChange(uri, contentObserver); inside ContentProvider's insert(), update() and delete() methods ] it notifies all the observers including CursorLoader's ForceLoadContentObserver.

ForceLoadContentObserver then marks Loader's mContentChanged as true