title: Calling a method of another viewcontroller already initialized
body: <p>I'm trying to call a method from another viewcontroller say HeyViewController that is already initialized. How would I call a method of it with re initializing a new instance of that view controller?</p>
  
  <p>e.g HeyViewController *hey =[[HeyViewController alloc]init];
  [hey showMe];</p>
  
  <p>is no good because that initializes the view controller when it's already initialized.</p>
  
  <p>So yeah, how would I do this?</p>
  
  <p><strong>EDIT:</strong></p>
  
  <p>Sorry it's unclear. The viewcontroller in question has been initialized before this viewcontroller due to the flow of the app using storyboard. So the viewcontroller is running but an instance of that viewcontroller is not in the current view controller. </p>