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POWorkaround for custom UIViewController animations in landscape?
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  1. POWorkaround for custom UIViewController animations in landscape?
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    copied!<p>I have a custom animated UIViewController transition, and it seems that there is a bug in iOS that screws up the layout in landscape orientation. In the main animation method, i'm given a mix of landscape and portrait views. (In portrait the views are all portrait, so no problem.)</p> <pre><code>- (void)animateTransition:(id &lt;UIViewControllerContextTransitioning&gt;)transitionContext; { UIViewController* toViewController = [transitionContext viewControllerForKey:UITransitionContextToViewControllerKey]; UIViewController* fromViewController = [transitionContext viewControllerForKey:UITransitionContextFromViewControllerKey]; UIView *containerView = [transitionContext containerView]; // fromViewController.view =&gt; landscape, transform // toViewController.view =&gt; portrait, transform // containerView =&gt; portrait, no transform [containerView addSubview:toViewController.view]; // ...animation... // } </code></pre> <p>I know that the <code>frame</code> property is not reliable when a view has a transform - so I'm guessing this is the root of the problem. In landscape mode, the to/from viewControllers views have a 90 deg clockwise transform [0 -1 1 0]. I've tried using bounds/center to size and position the view, as well removing the transform and then reapplying it, but UIKit fights me and insists on displaying the view as portrait. Annoying!</p> <p>In the screenshot, the dark grey is the UIWindow background, and the red is the added modal view controller which should cover the whole screen.</p> <p><img src="https://i.stack.imgur.com/S5rrQ.png" alt="the red view is in portrait"> </p> <p>Anyone found a workaround?</p>
 

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