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

Your problem is in

func collectionView(collectionView: UICollectionView, numberOfItemsSection section: Int)

method signature. It is wrong. It should be

func collectionView(collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int

and with override specification (because UICollectionViewController has own, this why you get empty collection).

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