Expandable List Indicator

Question

I have an expandable list

so two question

1. (I've seen somme similar question but never found the answer) How do I hide the arrow ( group indicator) when there's no children

   I tried to do it in the adapter

   public View getGroupView(int groupPosition, boolean isExpanded, View convertView,ViewGroup parent) {
   if(getChildrenCount(groupPosition)==0) {
         // how do i hide the group indicator ?
   }
   

   But I'm stuck So, how can modify the group indicator for empty groups ?

2. How to have different behavior when you click on the arrow (expands the group) vs you click on the title of the group (go to an activity)

Answer 1

1. You have to set a GroupIndicator drawable with different states. Check out StateListDrawable, maybe for the "state_empty" specify a null drawable.

Answer 2

I've created my own expander_group.xml

and set it up in my ExpandableListActivity

    Drawable icon = this.getResources().getDrawable(R.drawable.expander_group);
    getExpandableListView().setGroupIndicator(icon);

Icon are loaded but no empty icon in front of empty group till I tried to expand it. When I click on it it actually disapear as it should be

Please Help!