Expandable listview with selectall checkbox : group itemclick and scrolling bug

Question

I have an ExpandableListView with a checkbox next to group name and when expanded, child items with checkbox as well.

Let\'s suppose I have 4 groups with 50 childs.

Answer 1

I've found the solution. Instead of using OnCheckedChangeListener on the groupcheckbox, I used OnClickListener and it solved everything like this :

gholder.groupcheckbox.setChecked(array.get(groupPosition).isCheck());
gholder.groupcheckbox.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {

                for(int i = 0;i<array.get(groupPosition).getContacts().size();i++){
                    array.get(groupPosition).getContacts().get(i).setCheck(gholder.groupcheckbox.isChecked());
                }

                array.get(groupPosition).setCheck(gholder.groupcheck.isChecked());

                notifyDataSetChanged();
            }
        });