How to check if group is expanded or collapsed in Android ExpandableListView?

Question

I\'m looking for an api like isExpanded() or isCollapsed() that tell me if a group is expanded or collapsed.

Answer 1

If u use BaseExpandableListAdapter class you have getGroupView() override method.

public View getGroupView(int i, boolean b, View view, ViewGroup viewGroup) {

    // Here is your expand list view parent id
    // b specify that parent expand or not.

    .............

    if(b){
        imdDownArrow.setVisibility(View.GONE);
        imdUpArrow.setVisibility(View.VISIBLE);
    }else{
        imdDownArrow.setVisibility(View.VISIBLE);
        imdUpArrow.setVisibility(View.GONE);
    }
    ...............
    return view;
}

so using this simple code you can show arrow up or down