Question

I would like to change the default behaviour of the expandable list view
from:

short click => expand / collapse

to:

long click => expand / collapse    
short click => select item or child

Answer 1

OK, it seems the best solution is to do this with a list item click / long click listener.

public void onClick(View view)
{
    // click - do something with item       
}

public boolean onLongClick(View view)
{
    // group position was stored in view tag
    int groupPosition = (Integer) view.getTag();

    ExpandableListView listView = (ExpandableListView) findViewById(R.id.expandableListView);
    if (listView.isGroupExpanded(groupPosition))
        listView.collapseGroup(groupPosition);
    else
        listView.expandGroup(groupPosition);

    return true;
}