title: How do I send a message to a UIViewController in a separate file from a custom UIView
body: <p>Hi I'm having a problem trying to set <code>myButton</code> enable from another file.</p>
  
  <p>I have a <code>UIViewController</code> class with <code>myButton</code> and a custom <code>UIView</code> class in a separate file. In my <code>UIView</code> class I want to change <code>myButton</code> enable to true after an animation is done. My <code>UIViewController</code> is connected to a <code>UIViewController</code> in my <code>Storyboard</code>, while the <code>UIView</code> is initialized in the <code>UIViewController</code> class.</p>
  
  <p>I want to know how can I send a message to my <code>UIViewController</code> when the animation is done?</p>
  
  <p>Or how could I access <code>myButton</code> in my <code>UIView</code> so I can set it to true.</p>