title: IPhone SDK - Transition to NavigationController display problem
body: <p>I am nearly finished with my first IPhone app and everything works fine - except of one very little display bug:</p>
  
  <p>My starscreen is an UIView (Fullscreen) without Navigationbar or Toolbar.
  If I tap on a start button, there is an UIViewAnimationTransitionFlipFromRight animation that flips to the main navigation controller:</p>
  
  <pre><code>-(IBAction) switchViewToMainMenu {
  [UIView beginAnimations:@"Flip View" context:nil];
  [UIView setAnimationDuration:1.25];
  [UIView setAnimationCurve:UIViewAnimationCurveEaseInOut];
  
  [UIView setAnimationTransition: UIViewAnimationTransitionFlipFromRight forView:self.window cache:YES];
  [self.navController viewWillAppear:YES];
  [self.startScreenViewController viewWillDisappear:YES];
  
  [self.startScreenViewController.view removeFromSuperview];  
  [self.window addSubview:navController.view];    
  
  [self.startScreenViewController viewDidDisappear:YES];
  [self.navController viewDidAppear:YES];
  [UIView commitAnimations];
  self.startScreenViewController=nil;
  [startScreenViewController release];
  </code></pre>
  
  <p>}</p>
  
  <p>This works fine except of one little problem:</p>
  
  <p>When the navigation controller view appears (flips in), the Navigationbar on top is some pixels too high (the is a white bar where the Navigationbar should be). When the animation finished, the Navigationbar drops down to the right position. This doesn't look very beautiful...</p>
  
  <p>Any ideas how to fix that problem ?</p>