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POUIViewController (Modal) Rotation
 

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    <p>I have three modal VCs as follows:</p> <p>M1 is UIModalPresentationFullScreen</p> <p>M2 is UIModalPresentationFormSheet</p> <p>M3 is UIModalPresentationFormSheet</p> <p>M1 calls M2; M2 calls M3</p> <p>So, normally, you'll see M1 in the background and M2 as a FormSheet. If M3 is called it covers M2 until it is closed.</p> <p>Everything is fine until a rotation occurs while M3 is open. When rotated to any orientation with M2 &amp; M3 open, M2 goes into a full-screen view (even though it is a form sheet modal), and M3 is properly displayed as a form sheet over M3; but M1 is totally invisible (since it is covered by a full-screen M2). </p> <p>After rotation, everything works correctly, but M3 should cover M2 and M1 should be in the background. But what happens is that M2 is full-screen in the background, and M3 is correct.</p> <p>I have no rotation-related code in M2 or M3. M1 has the following only:</p> <pre><code>- (void) deviceOrientationDidChange { collectionView.frame = [self collectionViewFrame]; } </code></pre> <p>Which works as it should to change the frame of a collection view (this is a notification based on UIDeviceOrientationDidChangeNotification).</p> <p>So, I don't know whether this is a bug of mine, or whether this is as-designed behavior by Apple, or what. It is a little strange I know to have a series of Modals like this, but it does provide the desired effect. </p> <p>Will appreciate any suggestions from anyone; or recommendations for a workaround if nothing else. </p>
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    1. CODid you do any changes like adding frames in view did load of the modalview controller you are presenting?
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