UICollectionViewController Error in Swift 3.0: must be initialized with a non-nil layout parameter

Question

I\'m new to iOS development. I\'ve been learning Swift, and today, I tried using UICollectionViewController.

My code is as follows:

 class ViewContro         


        

Answer 1

This should work:

lazy var collectionView: UICollectionView = {
     let layout = UICollectionViewFlowLayout()
     let collectionView = UICollectionView(frame: .zero, collectionViewLayout: layout)
     return collectionView
}()