Landscape orientation for Collection View in Swift

Question

I am encountering a problem on landscape orientation for my collection view cell. When the app is in portrait it gives me the correct number of cell per row which is 2. But when

Answer 1

Just reload your UICollectionView in

override

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

        yourCollectionView.reloadData()
    }

and your collection view layout will refresh again when orientation changed

Update: This is code snippet for collectionView layout making 4 image view in each row from my code, and its working even it changing orientation from portrait to landscape and vice versa. You can change it to your need:

func collectionView(_ collectionView: UICollectionView,
                    layout collectionViewLayout: UICollectionViewLayout,
                    sizeForItemAt indexPath: IndexPath) -> CGSize {
    return CGSize(width: UIScreen.main.bounds.width / 4.8, height: UIScreen.main.bounds.width / 4.8)
}

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets {

    return UIEdgeInsets(top: 0.0, left: 0.0, bottom: 0.0, right: 0.0)
}

func collectionView(_ collectionView: UICollectionView,
                    layout collectionViewLayout: UICollectionViewLayout,
                    minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {

    return 0.0
}

func collectionView(_ collectionView: UICollectionView, layout
    collectionViewLayout: UICollectionViewLayout,
                    minimumLineSpacingForSectionAt section: Int) -> CGFloat {

    return 16.0
}

Hope it will helps you.

Cheers!