/**
* Refreshes the content of the parent list view while maintaining the current vertical position
* in the list view.
*/
private void refreshListView(ViewGroup parent, Group updatedGroup) {
// Get position of first and last visible list items
AbsListView parentListView = (AbsListView) parent.findViewById(android.R.id.list);
int firstVisible = parentListView.getFirstVisiblePosition();
int lastVisible = parentListView.getLastVisiblePosition();
// Populate list view
mItems.clear();
List<Group> groups = Group.getAllSortedByDisplayOrder();
for (Group group : groups) {
mItems.add(group.name);
}
notifyDataSetChanged();
// Handle case where item is at visible top and moved up.
if (firstVisible >= updatedGroup.getDisplayOrder()) {
parentListView.setSelection(updatedGroup.getDisplayOrder() - 1);
// Handle case where item is at visible bottom and moved down.
} else if (lastVisible < updatedGroup.getDisplayOrder()) {
parentListView.setSelection(firstVisible + 1);
// Handle move cases in the middle of viewable listview.
} else {
parentListView.setSelection(firstVisible);
}
}
