title: Presenting modal view controller from NSObject
body: <p>I have a custom class (NSObject) that is constantly running in the background.  At some point, it pops up a UIAlertView where the user has two options.  The custom class is the delegate of the UIAlertView, and therefore handles the button press.  </p>
  
  <p>If the user presses a specific button, I'd like to present a modal view controller to the user. My problem is, this is all being handled from an NSObject. It is not being handled from a UIViewcontroller, so I can't think of a way to present this new View Controller from this parallel running NSObject.</p>
  
  <p>Do I need to somehow figure out which VC is currently on top and active in order to present a new VC on top of it?</p>