(iOS) CollectionView에서 column 크기 정확하게 쪼개기

정사각형으로 CollectionView에서 정사각형으로 columnn2개가 형성 됩니다.

크기가 맞지 않다면 width를 고정해서 바꾸시길!

func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        let padding: CGFloat =  50
        let collectionViewSize = collectionView.frame.size.width - padding

        return CGSize(width: collectionViewSize/2, height: collectionViewSize/2)
    }

 

출처 : https://stackoverflow.com/questions/38394810/display-just-two-columns-with-multiple-rows-in-a-collectionview-using-storyboar