I have a UISplitViewController whose secondary (detail) VC is a UICollectionViewController. I want the cells of the collection to resize based on changes to the size and aspect of the collection vi...

I started to use AutoLayout for a large project and was positively surprised about it. However, now I have to adjust the project to accommodate for rotation and size classes, and I have big trouble...

I have to check if my device has changed orientation in iOS 8+. My approach is: override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) { super...

I am trying to get the visible drawing area for a subclass of GLKViewController. In iOS 7, I would determine the orientation and then adjust [UIScreen mainScreen].bounds.size accordingly. Then I wo...

I have a UINavigationController with a root UIViewController ("root"). The root view controller pushes another UIViewController "child". When the "child" UIViewController is on the screen , I rota...