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    <p>There is another case this error message may appear. I was searching for hours until I found the problem. This thread was very helpful after reading it a couple of times.</p> <p>If your main view controller is rotated to landscape orientation and you invoke a custom sub view controller which should be displayed in portrait orientation this error message can happen when your code looks like this:</p> <pre><code>- (NSUInteger)supportedInterfaceOrientations { return UIInterfaceOrientationPortrait; } </code></pre> <p>The trap here was xcode's intellisense suggested "UIInterfaceOrientationPortrait" and I didn't care about it. At the first glance this seemed to be correct.</p> <p>The right mask is named</p> <pre><code>UIInterfaceOrientationMaskPortrait </code></pre> <p>Be aware of the small infix <strong>"Mask"</strong>, else your subview will end up with an exception and the mentioned error message above.</p> <p>The new enums are bit shifted. The old enums return invalid values!</p> <p>(in UIApplication.h you can see the new declaration: <em>UIInterfaceOrientationMaskPortrait = (1 &lt;&lt; UIInterfaceOrientationPortrait)</em> )</p> <p>The solution is:</p> <pre><code>- (BOOL)shouldAutorotate { return YES; } - (NSUInteger)supportedInterfaceOrientations { // ATTENTION! Only return orientation MASK values // return UIInterfaceOrientationPortrait; return UIInterfaceOrientationMaskPortrait; } </code></pre> <p>In swift use</p> <pre><code>override func shouldAutorotate() -&gt; Bool { return true } override func supportedInterfaceOrientations() -&gt; Int { return Int(UIInterfaceOrientationMask.Portrait.rawValue) } </code></pre>
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    1. POSupported orientations has no common orientation with the application, and shouldAutorotate is returning YES'
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    1. COhappened to me for the same reason
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    2. COHa u made my day ;)
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    3. COOh, Thank YOU!!!
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