Populate Collection cell afterwards Swift - swift

Question

I have a mini game in Single-view-app project with item inventory (CollectionView). Its structure in main.Storyboard: CollectionView -> cell -> ContentView -> inventoryImageView. When the game starts items.count of empty cells are generated. Whenever a user taps on imageView of an item he finds, I want this imageView to populate the most left and available cell of the inventory. Something like:
cell.inventoryImageView = itemImageView
How can I access this left unpopulated cell?
The code is:
struct Items {
let imageName: String
var location = (0, 0)
}
var key = Items(imageName: "icons8-key-50")
var chest = Items(imageName: "icons8-closed-treasure-chest-50")
var rock = Items(imageName: "icons8-rock-50")
var bone = Items(imageName: "icons8-human-bone-50")
var mushroom = Items(imageName: "icons8-mushroom-50")
var items = [Items]()
override func viewDidLoad() {
items = [key, chest, rock, bone, mushroom]
}
when user clicks Start button this func gets triggered for every item :
func createItems(imageName: String) {
let imageNamePNG = "\(imageName).png"
let itemImage = UIImage(named: imageNamePNG)
let itemImageView = UIImageView(image: itemImage) itemImageView.frame = CGRect(x: 70, y: 0, width: 63, height: 63)
itemImageView.frame = CGRect(x: Int.random(in: 70...294), y: Int.random(in: 100...543), width: 63, height: 63)
view.addSubview(itemImageView)
createdImages.append(itemImageView)
}
cell creation part:
// MARK: - UICollectionViewDataSource protocol
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return self.items.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: reuseIdentifier, for: indexPath as IndexPath) as! CollectionViewCell
return cell
}

Answer 1

I don't quite understand what you want to do but I hope this code could help you.
CustomCollectionViewCell.swift
import UIKit
class CustomCollectionViewCell: UICollectionViewCell {
#IBOutlet weak var inventoryImageView: UIImageView!
}
ViewController.swift
import UIKit
class ViewController: UIViewController {
#IBOutlet weak var collectionView: UICollectionView!
#IBOutlet weak var imageButton: UIButton!
var key = Items(imageName: "img-1")
var chest = Items(imageName: "img-2")
var rock = Items(imageName: "img-3")
var bone = Items(imageName: "img-4")
var mushroom = Items(imageName: "img-5")
var items = [Items]()
var index = 0
var createdImages = [Items]()
override func viewDidLoad() {
super.viewDidLoad()
self.items = [key, chest, rock, bone, mushroom]
self.imageButton.setImage(UIImage(named: self.items[index].imageName), for: .normal)
}
#IBAction func imageButtonAction(_ sender: Any) {
index += 1
if index >= items.count{
index = 0
}
self.imageButton.setImage(UIImage(named: self.items[index].imageName), for: .normal)
self.createdImages.append(self.items[index])
self.collectionView.reloadData()
}
}
extension ViewController: UICollectionViewDataSource, UICollectionViewDelegate {
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return self.createdImages.count
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "cell", for: indexPath) as! CustomCollectionViewCell
cell.inventoryImageView.image = UIImage(named: self.createdImages[indexPath.item].imageName)
return cell
}
}
Items.swift
struct Items {
let imageName: String
var location = (0, 0)
}