How can I fold all ChildView Group in Android ExpandableList Item?

Question

How can I fold all ChildView Group in Expandable List. Now I have two buttons to control Expand All and Fold All on Activity. Expandable button is OK and it is working work but I don't know how to fold all ChildView Group. How can i do this ?

Thanks

**expandableListView.expandGroup(position, true); = OK<Br>

expandableListView.foldGroup(position) = ? or ?**

Answer 1

try this,

int count = (new ExpAdapter(this)).getGroupCount();
        b.setOnClickListener(new View.OnClickListener() {

            @Override
            public void onClick(View v) {

                for (int i = 0; i < count; i++)
                {
                    expList.collapseGroup(i);
                }

            }
        });