@Override
 public void onClick(View view) {
   ToggleButton toggleButton;
   for (int i = 0; i < m_rollTypeRadioGroup.getChildCount(); i++) {
     toggleButton = (ToggleButton) m_rollTypeRadioGroup.getChildAt(i);
     toggleButton.setChecked(toggleButton.getId() == view.getId());
   }
   switch (view.getId()) {
     case R.id.radiotoggleSingleRoll:
       setRollMode(RollMode.SINGLE);
       break;
     case R.id.radiotoggleMultiRoll:
       setRollMode(RollMode.XDY);
       break;
     case R.id.radiotoggleSumRoll:
       setRollMode(RollMode.CUMULATIVE);
       break;
   }
 }