Question

I have a working implementation of a ContentProvider loading data via CursorLoader into a listview (with custom CursorAdapter). It’s a list of events. Every item has a title, place, etc. but also a set of offers which should be displayed in a LinearLayout inside every list row.

The problem is that a Cursor row can only contain flat data, not a set of other items.

My only idea is to make a joined query on database like this:

SELECT * FROM events, offers WHERE events.id=offers.event_id;

But then I’ll have as much rows as there are offers (and the list should display events, so it’s not good) and the list would be overpopulated. Maybe there is a possibility to tell CursorAdapter to only populate list rows with unique events.id but somehow retrieve the offers data as well?

The best solution would be to put a Cursor or custom Object containing offers inside the events Cursor. But afaik it’s not possible.

Answer 1

Unfortunately one CursorLoader can only load one Cursor. So the solution was to write a custom AsyncTaskLoader which returned two Cursors.