Group items in a ListActivity

I have a super simple ActivityList, say a scoll list with all countries. Now开发者_如何学JAVA, I would like to group the countries by continent like:

• Azia
  • China
  • India
• Europe
  • France
  • Greece

The Android Contacts application has a similar behavior (the A, B, C,.. groups for your contacts). I played with cwac-merge but it doesn't have the same behavior (groups don't stick at the top when you scroll for example).

Is there a simple way to do this on Android?

Thanks for helping out a fellow programmer who tries to learn how Android works.

You might want to look at this project AmazingListView. The source code for it and also source for a demo is available.

If you only need 2-level lists, then use ExpandableListView. You can find examples for it in the ApiDemos I believe.