title: How to tell the active view controller when applicationDidBecomeActive is called?
body: <p>I feel I am missing a trick here...</p>
  
  <p>I just want to call viewDidLoad or viewDidAppear on the current active view controller when applicationDidBecomeActive gets called, so I can reset some animations or whatever, when the  app is started up again from the background. Some of my views don't care, but others really need to know.</p>
  
  <p>I am using Storyboards and my app delegate file has the standard functions - but all with EMPTY bodies. For example, didFinishLaunchingWithOptions just returns YES and does nothing else. Storyboard automagically does everything I guess.</p>
  
  <p>So how can I talk to the current view controller from my rather blank, information free, app delegate?</p>