title: rootViewController set but comes up as incorrect orientation
body: <p>My situation is very similar to <a href="https://stackoverflow.com/questions/6532894/orientation-problem-when-i-set-a-rootviewcontroller">this question</a> . I have an app that is universal where iPhone is in portrait orientation and the iPad is in Landscape and I switch between all of my main screens using the appDelegate.window.rootViewController = newScreen; The iPhone app works  perfectly. The iPad app will sometime throw the screen up in portrait orientation instead of landscape. Here is some sample transition code:</p>
  
  <pre><code>AppDelegate* appDelegate = (AppDelegate*)[[UIApplication sharedApplication] delegate];
              ViewController* v = nil;
              if (IS_IPAD()) {
                  v = [[ViewController alloc] initWithNibName:@"ViewController-iPad" bundle:nil];
              }else{
                  v = [[ViewController alloc] initWithNibName:@"ViewController" bundle:nil];
              }
              [appDelegate.window setRootViewController:(UIViewController*)v];
  </code></pre>
  
  <p>I also tried this from <a href="https://stackoverflow.com/questions/8053832/rootviewcontroller-animation-transition-initial-orientation-is-wrong">this other question</a> :</p>
  
  <pre><code>AppDelegate* appDelegate = (AppDelegate*)[[UIApplication sharedApplication] delegate];
              ViewController* v = nil;
              if (IS_IPAD()) {
                  v = [[ViewController alloc] initWithNibName:@"ViewController-iPad" bundle:nil];
              }else{
                  v = [[ViewController alloc] initWithNibName:@"ViewController" bundle:nil];
              }
  
              [UIView
               transitionWithView:appDelegate.window 
               duration:0.5
               options:UIViewAnimationOptionTransitionCrossDissolve
               animations:^(void) {
                   BOOL oldState = [UIView areAnimationsEnabled];
                   [UIView setAnimationsEnabled:NO];
                   [appDelegate.window setRootViewController:(UIViewController*)v];
                   [UIView setAnimationsEnabled:oldState];
               } 
               completion:nil];
  </code></pre>
  
  <p>But nothing has fixed it. </p>
  
  <p>Also tried using [appDelegate.window makeKeyAndVisable] and [appDelegate.window makeKeyWindow] in the hopes that this would "shock" it into doing the correct orientation.</p>