Android :: ExpandableListView: Align Selected Groupheader After Its Expansion

For a better handling and overview in expandableLists I would like to show only the childelements of the last selected group - the previously expanded group should be automaticly collapsed. The groupheader of the expanded group should be als aligned to the top of the screen to show the user that he's in the right group and that he can start to read the group childs from the beginning.

This worked well with the following code until now (android 1.5 - 2.1) but with android 2.2 the selection seems to work after the collapse method call:

CODE:..............

If a group is selected by touch and expanded it should collapse the previously expanded group (if one exists). To align the groupheader to the top of the screen the method "setSelectedGroup(groupPosition)" is called.

Without collapsing a group (e.g. if you close the group manually before you open another) the selection is done correctly, otherwise the list entries of the expanded group are shown somewhere in the middle and not at the top as expected. Has someone a solution or workaround for this issue? The new API method smoothScrollToPosition (API level 8) is also not working in this case.

I mentioned this issue also here: http://code.google.com/p/android/issues/detail?id=9177