UICollectionView Custom Cell to fill width In Swift

Question

I\'ve been trying to figure-out how can i make the cell fill the width, as you can see in the picture the width between the cells is too big. i am using custom cell with only on

Answer 1

In my case, assuming every cell has a width of 155 and a height of 220. If I want to show 2 cells per row in a portrait mode and 3 for landscape.

func collectionView(collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAtIndexPath indexPath: NSIndexPath) -> CGSize {
    var itemsCount : CGFloat = 2.0
    if UIApplication.sharedApplication().statusBarOrientation != UIInterfaceOrientation.Portrait {
        itemsCount = 3.0
    }
    return CGSize(width: self.view.frame.width/itemsCount - 20, height: 220/155 * (self.view.frame.width/itemsCount - 20));
}