title: How Do I call a method from a view contained in a view controller ?
body: <p>I have a <code>UIViewController</code> which contains a <code>UIView Subclass</code>, from the subclass I want to call a method defined in the <code>UIViewController</code> which contains it. I do not want to instantiate a new instance of the view controller, because it contains information that I need within the method I am attempting to call. Here is a diagram trying to further clarify:</p>
  
  <p>(UIViewController) MainView --> has method <code>updateView</code></p>
  
  <p>(UIView) SubView ---> Has Button that plays animation and has completion block </p>
  
  <p>I want to call <code>UpdateView</code> in the completion block </p>