View is not landscape if addsubview is done in landscape? iPhone SDK...

Question

Hi I have a problem when adding a subview when my app is in landscape. When the view gets loaded it is in portrait mode so part of the view is missing and I can see the main view on the right hand side. If I load the subview in portrait mode then rotate the iPhone it rotates to landscape no problem. I have googled this lots and it seems to be a common problem yet I am unable to find a solution. Please can someone help?

This is my code to add the view...

PreferencesViewController *screen = [[PreferencesViewController alloc]initWithNibName:nil bundle:nil];

[self.view addSubview:screen.view];

[UIView beginAnimations:nil context:NULL];
[UIView setAnimationDuration:0.5];

[UIView setAnimationTransition:UIViewAnimationTransitionFlipFromRight forView:self.view cache:YES];
[UIView commitAnimations];

Thanks :-)