Collection view cell slow detect selected item in swift

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

I have exactly the same issue. I'm having difficulty formulating the question. Good luck here. — Martin Muldoon, Nov 03 '17 at 12:35

score 5 · Answer 1 · answered Nov 03 '17 at 11:41

5

Try to deselect this checkmark in Collection View properties

answered Nov 03 '17 at 11:41

AntiVIRUZ

342
1
14

Tried, still cannot. I uploaded my project zip, maybe can find out the problem faster. – Lester Nov 03 '17 at 11:48
Didn't know that setting existed. Thanks! – Martin Muldoon Nov 03 '17 at 12:37
1

this is how you do it in code (swift): `collectionView.delaysContentTouches = false` – andrés Jul 27 '20 at 19:48

score 4 · Accepted Answer · answered Nov 06 '17 at 08:01

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)
}

score 0 · Answer 3 · answered Nov 09 '17 at 12:20

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()
    }

Collection view cell slow detect selected item in swift

3 Answers3