Default UICollectionView layout not respecting iPad split screen

My layout when on split screen is not respecting the width of the split screen.

My custom view is respecting it(the black bar at the top) but anything using autolayout is not respecting the width.

I am handling rotation using

override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) { 

Is there a helper method for handling split view? Do I handle it in layoutSubview? I would have expected the UICollectionView to handle this for us.

In viewWillTransition I use

  guard let flowLayout = collectionView.collectionViewLayout as? UICollectionViewFlowLayout else {             return         }    flowLayout.invalidateLayout() 

1 Answers

Answers 1

I assume by "default" layout you mean a UICollectionViewFlowLayout. It looks like the itemSize width is bigger then the width of the view. Try adding a check in collectionView:layout:sizeForItemAtIndexPath: to make sure that the width is less than or equal to the collection's width.

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