Android: long click on the child views of a ExpandableListView?

Question

ExpandableListView has a setOnChildClickListener method, but lacks of setOnChildLongClickListener method.

When I added setOnL

Answer 1

I managed to get long clicks working on an ExpandableListView child item, using the following:

getExpandableListView().setOnItemLongClickListener(new OnItemLongClickListener() {
    @Override
    public boolean onItemLongClick(AdapterView parent, View view, int position, long id) {
        if (ExpandableListView.getPackedPositionType(id) == ExpandableListView.PACKED_POSITION_TYPE_CHILD) {
            int groupPosition = ExpandableListView.getPackedPositionGroup(id);
            int childPosition = ExpandableListView.getPackedPositionChild(id);

            // You now have everything that you would as if this was an OnChildClickListener() 
            // Add your logic here.

            // Return true as we are handling the event.
            return true;
        }

        return false;
    }
});

It took ages to figure out that the id argument in onItemLongClick was the packedPosition argument required by getPackedPosition* methods, certainly not clear from the documentation.

Note: For this solution to work you need to override the getGroupId and getChildId() methods in your adapter

   @Override
   public long getGroupId(int groupPosition) {
      return groupPosition;
   }

   @Override
   public long getChildId(int groupPosition, int childPosition) {
      return childPosition;
   }