iphone - Force UIViewController to only show in landscape mode

Question

My app runs in portrait mode, but i want to show one screen in landscape mode only as it is a chart. What do i add to my uiviewcontroller to force it into landscape mode only?

Answer 1

I'm sorry but this answer will be very short: If you're using the UINavigationController, you can't. The answer @jer gives is therefore incorrect. The Apple documentation states:

All child view controllers in your UITabBarController or UINavigationController do not agree on a common orientation set.

I recently had this question answered on a bounty and my app rejected in the process. Read up on that here: How to constrain autorotation to a single orientation for some views, while allowing all orientations on others?

The only solution you have, is to throw away the UINavigationController and rewrite it with something of your own.