Collection View Cells not appearing

Question

I want to display as many collectionViewCells with buttons as there are strings in my array. but when I start the simulator there is just the backgroun

Answer 1

func layoutCells() {
        let layout = UICollectionViewFlowLayout()
        layout.sectionInset = UIEdgeInsets(top: 0, left: 10, bottom: 10, right: 10)
        layout.minimumInteritemSpacing = 5.0
        layout.minimumLineSpacing = 5.0
        layout.itemSize = CGSize(width: (UIScreen.mainScreen().bounds.size.width - 40)/3, height: ((UIScreen.mainScreen().bounds.size.width - 40)/3))
        collectionView!.collectionViewLayout = layout
    }

Try this. Call this function from view did load. I think the problem is that your collection is not laid out correctly.

func viewDidLoad() {
    layoutCells()
}

If this works you can modify the layout options to meet your needs.