How to deselect the select all checkbox when i am deselecting even 1 checkbox in android

I want functionality in my project where on a click of select all checkbox all the checkbox in the list must get selected and on deselect of checkbox all the other checkbox must get deselected. I have achieved this functionality by doing this:

/*in my main activity i have done this*/

  cbSelectAll.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                for (int i = 0; i < resumeSearchList.size(); i++) {
                    resumeSearchList.get(i).setSelected(cbSelectAll.isChecked());
                }
                cvSearchResultListAdapter.notifyDataSetChanged();
            }
        });
    }

and in adapter class I have done this..

holder.cbSelect.setChecked(dataList.get(position).isSelected());

Now my problem is whenever I will unchecked any checkbox in the list the select all button must get unchecked. Please help

thanks in advance