UICollectionView Set number of columns

Question

I just started learning about UICollectionViews. I\'m wondering if anyone knows how to specify the number of columns in a collectionview. The default is set to 3 (iPhone/por

Answer 1

This answer is for swift 3.0 -->

first conform to the protocol :

 UICollectionViewDelegateFlowLayout

then add these methods :

    //this method is for the size of items      
    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
        let width = collectionView.frame.width/3
        let height : CGFloat = 160.0
        return CGSize(width: width, height: height)
    }
    //these methods are to configure the spacing between items

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, insetForSectionAt section: Int) -> UIEdgeInsets {
        return UIEdgeInsetsMake(0,0,0,0)
    }

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumInteritemSpacingForSectionAt section: Int) -> CGFloat {
        return 0
    }

    func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, minimumLineSpacingForSectionAt section: Int) -> CGFloat {
        return 0
    }