title: Change order of tab bar items
body: <p>I'm having a view which has a tab bar at the bottom. Now I want to change the items of the tab bar based on iPhone and iPad (i.e. different orders for iPhone and iPad).</p>
  
  <p>In <code>viewDidLoad</code> if I do something like  <code>self.viewControllers.count</code>, I get the proper count of tab bars. But how to proceed from there in order to change the order of tab bar items I can't figure out. I mean how can I get the index of each of the viewcontrollers so that I can rearrange their indexes I can't figure out...</p>