title: touchesBegan method not called when added as subview of another view
body: <p>Good evening.
  I have two ViewControllers (lets name them A and B) both with method touchesBegan overriden. It works this way: when view A is tapped, the view of B is added as subview of view of A and appears with center placed at touch´s location. But when I tap in the view of B (recently added), touchesBegan of B is not called. I´ve already set view.enableUserInteraction to true in both views, already tested unsuccesfully nextResponder().touchesBegan method. What am I doing wrong ?
  Obs: I intend to add several views of B (width=60, height=60) as subviews of view of A.</p>