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 background of the CollectionViewbut no cells shown. What could be the error?

Here is the code from my CollectionViewController that I attached to the CollectionView in the main.storyboard:

class CollectionViewController: UICollectionViewController {

var Array = [String]()

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.

    Array = ["1","2","3","4","5"]
}

override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
    // Dispose of any resources that can be recreated.
}

func collectionView(collectionView: UICollectionView, numberOfItemsSection section: Int) -> Int {
    return Array.count
}

override func
    collectionView(collectionView: UICollectionView, cellForItemAtIndexPath indexPath: NSIndexPath) -> UICollectionViewCell {

        var cell = collectionView.dequeueReusableCellWithReuseIdentifier("cell", forIndexPath: indexPath) as! UICollectionViewCell

        var button = cell.viewWithTag(1) as! UIButton
        button.titleLabel?.text = Array[indexPath.row]

        return cell
}

}

These are the connections of the Collection View Controller:

The View Controller on the Storyboard:

Answer 1

Did you set the CollectionViewController to the storyboard identity inspector? :)

And I would try to call the reloadData() after you change the data in the viewDidLoad method.

Hope that helps

Answer 2

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.