When dismissing modal view controller, all main view contents moves up by 20px

I am using presentModalViewController: and dismissModalViewController: with animation set to YES in both cases, which works fine.

However, after the modal view is dismissed, all of the content on the main view has moved u开发者_JS百科p what looks like 20px. This affects all the view controllers.

Any idea why this happens, and how to overcome it?

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Have you messed with your views' autoresize mask. Also, are you hiding the status bar? If both are true, then this is the problem.

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Did you use any tabbar in your application? I have similar problem see this post,

iPad modalPresentationStyle UIModalPresentationFormSheet orientation problem

Is this app full screen?

if yes, You may try re-hiding the status bar in viewWillAppear or viewWillDisappear on the modal view controller.

[[UIApplication sharedApplication] setStatusBarHidden:YES animated:NO];

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This could have a few reasons, can you be more specific.

Possible Causes: Do you hide your status bar in one of the ViewController? Do you have a translucent NavigationBar in one of the views and a non translucent NavigationBar in the other?