Swift: How to refresh UICollectionView layout after rotation of the device

Question

I used UICollectionView (flowlayout) to build a simple layout. the width for each cell is set to the width of screen using self.view.frame.width

but whe

Answer 1

The viewWillLayoutSubviews() did not work for me. Neither did viewDidLayoutSubviews(). Both made the app go into an infinite loop which I checked using a print command.

One of the ways that do work is

override func viewWillTransition(to size: CGSize, with coordinator: UIViewControllerTransitionCoordinator) {
// Reload here
}