public SubMenu addSubMenuItem() {
itemAdded = true;
SubMenu subMenu = menu.addSubMenu(groupId, itemId, itemCategoryOrder, itemTitle);
setItem(subMenu.getItem());
return subMenu;
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
menu.addSubMenu(0, 3001, 3001, "Flush");
return super.onCreateOptionsMenu(menu);
}