Collection view cell slow detect selected item in swift - ios

Question

I'm putting the collection view into table view cell and I made it can display on the cell but when I want to select the collection cell (to change the color or print cell number), the select function is not working, I need to tap the cell many time to make it selected. Why the cell slow detect the selected item? What code will affect the cell to be selected?
This is the code for select the collection cell
override func awakeFromNib() {
super.awakeFromNib()
let layout: UICollectionViewFlowLayout = UICollectionViewFlowLayout()
let width = UIScreen.main.bounds.width
layout.scrollDirection = .vertical
layout.sectionInset = UIEdgeInsets(top: 0, left: 0, bottom: 0, right: 0)
layout.itemSize = CGSize(width: width/5, height: width/4)
layout.minimumInteritemSpacing = 0
layout.minimumLineSpacing = 0
collectionView?.collectionViewLayout = layout
collectionView?.delaysContentTouches = false
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionViewCell", for: indexPath) as! CategoryCollectionViewCell
cell.cateImg.image = imageName[indexPath.row]
cell.cateLabel.text! = nameArray[indexPath.row]
return cell
}
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
if let cell = collectionView.cellForItem(at: indexPath) as? CategoryCollectionViewCell {
cell.cateImg.image = imageName2[indexPath.row]
print("collectionViewCell selected \(indexPath)")
}
}
func collectionView(_ collectionView: UICollectionView, didDeselectItemAt indexPath: IndexPath) {
if let cell = collectionView.cellForItem(at: indexPath) as? CategoryCollectionViewCell {
cell.cateImg.image = imageName[indexPath.row]
}
}
Project zip link:
https://www.dropbox.com/s/y10dgp3q61pi5n1/Finnciti.zip?dl=0
problem on AddViewCell.swift

Answer 1

Try to deselect this checkmark in Collection View properties

Answer 2

I fixed the problem after delete this code on AddViewController.
let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(AddExpenseVC.dismissKeyboard))
view.addGestureRecognizer(tap)
#objc func dismissKeyboard() {
view.endEditing(true)
}

Answer 3

In AddViewController you are adding gesture recognizer to the view, which make every user gesture to be detected by the tap recognizer. You can remove this gesture:
let tap: UITapGestureRecognizer = UITapGestureRecognizer(target: self, action: #selector(AddViewController.dismissKeyboard))
For dismissing keyboard you can implement tebleView delegate method:
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
dismissKeyboard()
}