@Override
public void onPrepareOptionsMenu(Menu menu) {
super.onPrepareOptionsMenu(menu);
MenuItem toggleItem = menu.findItem(R.id.menu_item_toggle_pooling);
if (PollService.isServiAllarmOn(getActivity())) {
toggleItem.setTitle(R.string.stop_pooling);
} else {
toggleItem.setTitle(R.string.start_pooling);
}
}