UICollectionViewDelegate method not called in UICollectionViewController subclass - swift

Question

Delegate and datasource are also setI have subclassed the UICollectionViewController, all datasource method of UICollectionView are getting called but UICollectionViewDelegate method are not getting called. What could be the reason. ? Below is the implementaion of UICollectionViewController subclass.
class CollectionCollectionViewController: UICollectionViewController {
let carImages = ["mini_small","rover_small","smart_small","highlander_small","venza_small","volvo_small","vw_small","nissan_small","honda_small","jeep_small"]
override func viewDidLoad() {
super.viewDidLoad()
self.collectionView!.register(UICollectionViewCell.self, forCellWithReuseIdentifier: reuseIdentifier)
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
// Dispose of any resources that can be recreated.
}
/*
// MARK: - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
// MARK: UICollectionViewDataSource
override func numberOfSections(in collectionView: UICollectionView) -> Int {
// #warning Incomplete implementation, return the number of sections
return 1
}
override func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
// #warning Incomplete implementation, return the number of items
return carImages.count
}
override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "MyCell", for: indexPath) as! MyCollectionViewCell
let path = Bundle.main.url(forResource: carImages[indexPath.row], withExtension: "jpg")
let data = try! Data(contentsOf: path!)
cell.imgView.image = UIImage(data: data)
return cell
}
// MARK: UICollectionViewDelegate
// Uncomment this method to specify if the specified item should be highlighted during tracking
override func collectionView(_ collectionView: UICollectionView, shouldHighlightItemAt indexPath: IndexPath) -> Bool {
return true
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
let path = Bundle.main.url(forResource: carImages[indexPath.row], withExtension: "jpg")
let data = try! Data(contentsOf: path!)
let image = UIImage(data: data)
return image!.size
}

Answer 1

try this
self.collectionView.delegate = self
Hope this help