Instead of subclassing UIView why don't you subclass UIViewController. Check out the following link. In that made a "RedView" and "BlueView" UIViewControllers with their xibs and added them to the MultipleViewsController view by creating and instance of the former two classes and adding [self.view addSubview:red.view] and [self.view addSubview:blue.view] in the MultipleViewsController's viewDidLoad method
MultipleControllers in one view
Just add (id)sender to the button pressed function in RedView and BlueView in the code of the above link.
