viewwilltransitiontosize

A lot of people have discussed techniques for mimicking the native iOS camera app (where the UI elements pivot in-place as the device rotates). I actually asked a question about it before here . Most people have you lock the orientation of the UI, but then force a transformation on just the elements that you want to pivot. This works, but the elements don't pivot with the smooth animations you see in the native iOS app and it leads some issues. Specifically, part of my interface allows users to share without leaving this interface, but when the sharing view gets rotated, it comes out off

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 would subtract the navigationBar and statusBarFrame heights and voila! - the actual size of my drawing area. Now I'm trying to update for iOS 8 with viewWillTransitionToSize, however when I rotate the device (I have UIInterfaceOrientationMaskAll on), the size that is passed is wrong. In fact, the width is correct for the view, but not the height (which involves the navbar and statusbar heights). I've

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 troubles getting the views to behave correctly. The base problem is that I have UICollectionViews with cells that again contain UICollectionViews . When the device is rotated, the base collection view adapts it's cells right, but all cells of the nested collection views are not adjusted to the new size automatically. After investigation it comes down to: When viewWillTransitionToSize is called, the base

I'm creating a full screen image gallery using a UICollectionView . When the user rotates the device, I perform updates to the UICollectionView within func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) I present this UIViewController modally and have a UICollectionView taking up the full screen. Within viewDidLoad , I create the flow layout as: let flowLayout = UICollectionViewFlowLayout() flowLayout.scrollDirection = .horizontal flowLayout.minimumInteritemSpacing = 0 flowLayout.minimumLineSpacing = 0 photosCollectionView.isPagingEnabled = true