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    <p>A cleaner way is NOT to use UIInterfaceOrientation for the rotation. </p> <p>Why, because then your interface or view 1 actually rotates. This means you have to rotate it back to redisplay it after view 2 is removed. </p> <p>To compensate for this, I simple subscribe to <strong>UIDeviceOrientation</strong> notifications. Subtly different. View 1 does NOT have to support autorotation to make this method work. In viewDidLoad enter the following code:</p> <pre><code>[[UIDevice currentDevice] beginGeneratingDeviceOrientationNotifications]; [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(detectOrientation) name:@"UIDeviceOrientationDidChangeNotification" object:nil]; </code></pre> <p>Then just define the method detectOrientation:</p> <pre><code>-(void) detectOrientation { if (([[UIDevice currentDevice] orientation] == UIDeviceOrientationLandscapeLeft) || ([[UIDevice currentDevice] orientation] == UIDeviceOrientationLandscapeRight)) { //load view 2 } else if ([[UIDevice currentDevice] orientation] == UIDeviceOrientationPortrait) { // load view 1 } } </code></pre> <p>Now neither of your views need support autoratation! You will however need to perform a transform on view 2 before loading:</p> <pre><code>-(void) transformView2ToLandscape { NSInteger rotationDirection; UIDeviceOrientation currentOrientation = [[UIDevice currentDevice] orientation]; if(currentOrientation == UIDeviceOrientationLandscapeLeft){ rotationDirection = 1; }else { rotationDirection = -1; } CGRect myFrame = CGRectMake(0, 0, 480, 300); CGAffineTransform transform = [[self view2] transform]; transform = CGAffineTransformRotate(transform, degreesToRadians(rotationDirection * 90)); [[self view2] setFrame: myFrame]; CGPoint center = CGPointMake(myFrame.size.height/2.0, myFrame.size.width/2.0); [[self view2] setTransform: transform]; [[self view2] setCenter: center]; } </code></pre> <p>Thats how I swap views o rotation without supporting autorotation in my views.</p>
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    1. PORotating the iPhone, and instantiating a new UIViewController?
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    1. USCorey Floyd
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    1. COThis looks really interesting. I will give it a try to understand the actual performance, i.e., how much faster a notification is delivered and how much does it take to apply the transform. Thank you very much.
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      1. USMassimo Cafaro
    2. COthis works very well. specially if you are using two different view controllers for two orientations .
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      1. USJinah Adam
    3. COThe "checked" answer answers the question, but this response answers the question which (ideally) should have been asked.
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