didSelectItemAt: not being called (UICollectionView) - swift

Question

I have a UICollectionView in a UIView class because it's implemented in an other class.I set the delegate and dataSource and allowsSelection to true but didSelectItemAt method doesn't work and I can't figure out why.This is the code:
class NewRecipeViewCategoryCV: UIView, UICollectionViewDataSource, UICollectionViewDelegate, UICollectionViewDelegateFlowLayout {
lazy var collectionView: UICollectionView = {
let layout = UICollectionViewFlowLayout()
layout.scrollDirection = .horizontal
let cv = UICollectionView(frame: .zero, collectionViewLayout: layout)
cv.showsHorizontalScrollIndicator = false
cv.backgroundColor = UIColor.white
cv.translatesAutoresizingMaskIntoConstraints = false
cv.dataSource = self
cv.delegate = self
cv.allowsSelection = true
return cv
}()
let newRecipeModel = NewRecipeModel()
let cellId = "cellId"
override init(frame: CGRect) {
super.init(frame: frame)
collectionView.register(NewRecipeViewCategory.self, forCellWithReuseIdentifier: cellId)
addSubview(collectionView)
collectionView.topAnchor.constraint(equalTo: topAnchor).isActive = true
collectionView.leftAnchor.constraint(equalTo: leftAnchor).isActive = true
collectionView.heightAnchor.constraint(equalTo: heightAnchor).isActive = true
collectionView.widthAnchor.constraint(equalTo: widthAnchor).isActive = true
}
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return newRecipeModel.recipeCategory.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: cellId, for: indexPath) as! NewRecipeViewCategory
cell.categoryText.text = newRecipeModel.recipeCategory[indexPath.item].uppercased()
return cell
}
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
print(123)
}
func collectionView(_ collectionView: UICollectionView, layout collectionViewLayout: UICollectionViewLayout, sizeForItemAt indexPath: IndexPath) -> CGSize {
let category: UILabel = {
let category = UILabel()
category.text = "BREAKFAST"
category.font = UIFont(name: "SourceSansPro-Regular", size: 13)
category.translatesAutoresizingMaskIntoConstraints = false
category.textColor = UIColor.black
category.sizeToFit()
return category
}()
return CGSize(width: category.frame.width+15, height: category.frame.height+12)
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
}