Expandable ListView Sample from Google

Question

Hello all,

I just tried the current Google sample for ExpandableListiew: http://developer.android.com/resources/samples/ApiDemos/src/com/example/android/apis/view/ExpandableList1.html

This sample seem very simple and easy to use.

But what I would like to do is to say that one of the category has no child.

I just removed all the childs but the problem is the arrow that still appear on this current line.

For instance, imagine that I remove all "Cat Names", the arrow is still there and when I click on it, the arrow just change .

How to remove this arrow and launch an activity instead?

Thank a lot for any information.