title: How to load a UIViewController conditionally using storyboard and xcode 4.2
body: <p>I have a screen in which a user can choose a set of meals - once the meals have been chosen the application fetches results form a database and displays a list of them. Now, I would like to implement a condition to decide whether the next screen should be loaded or not - ie. if there's no internet connection then show an alert and don't display the next screen etc.</p>
  
  <p>I've implemented a system to check whether there is an internet connection or not but I'm not sure how and where to decide of the next screen should be loaded. Any ideas?</p>
  
  <p>Thanks,</p>