iphone navigation controller - transition between portrait and landscape view controllers

In my iphone app, i've two view controllers. First one is a 开发者_开发知识库portrait and second one is landscape. When app is started, it will show the portrait view. On click of a button in portrait view, the view transitions to landscape view. Here, i'm using navigation controller. If both the views are portrait, pushing the next view via navigation controller won't be a problem. How can I achieve transition between portrait and landscape views using nav controller. Note that status bar is visible and nav bar is hidden.

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I would suggest you to use the following instead of pushViewController

[self presentModalViewController:aController animated:YES];

This is the only solution i guess. If you are navigating further from the LandScape mode put the aController inside the UINavigationController and Present the NavController the same way as shown above.