I've read in Apple's documentation about UINavigationController's resizing behavior and it hasn't been much of a problem until now.

I have the following code to set up my UINavigationController's view:

`navController.view.frame = CGRectMake(0, 40, 320, 420);`

and this is sufficient until the view is obscured by a modal view, at which point the view is resized to the default size somewhere between calls of `viewWillAppear` and `viewDidAppear` (as UINavigationController inherits from UIViewController).

I'm attempting to keep a banner visible above the UINavigationController (in the 40 by 320 space left available) but this banner is consistently obscured as described above.

Is there a way to surpress UINavigationController's resizing behavior without subclassing UIViewController myself?