Why is my UICollectionView not showing at all? - ios

Question

I am using storyboards, and my UICollectionView with a basic custom cell is not showing at all? My simulator is constantly running a version of my storyboard when my "Next" button was at the middle of the screen, obviously now it is at the bottom as shown here along with all the identities and links created in the storyboard: https://imgur.com/a/R8iTm9n
import UIKit
class CategoryViewController: UIViewController{
#IBOutlet weak var categoryCollectionView: UICollectionView!
override func viewDidLoad() {
super.viewDidLoad()
categoryCollectionView.delegate = self
categoryCollectionView.dataSource = self
NetworkingClient.fetchRecipeCategories{ (recipeCategories) in
//print(recipeCategories)
}
categoryCollectionView.reloadData()
}
}
extension CategoryViewController: UICollectionViewDelegate {
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
collectionView.deselectItem(at: indexPath, animated: true)
print("Taptaptap")
}
}
extension CategoryViewController: UICollectionViewDataSource {
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return 12
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
var cell = UICollectionViewCell()
if let testCell = collectionView.dequeueReusableCell(withReuseIdentifier: "categoryCell", for: indexPath) as? CategoryCollectionViewCell{
testCell.configure(with: indexPath.row)
cell = testCell
print("test1")
}
print("test2")
return cell
}
}
/*
extension CategoryViewController: UICollectionViewDelegateFlowLayout {
}
*/
And my my custom view cell :
class CategoryCollectionViewCell: UICollectionViewCell {
static let identifier: String = "CategoryCollectionViewCell"
#IBOutlet weak var categoryImageView: UIImageView!
#IBOutlet private weak var testLabel: UILabel!
func configure(with id: Int){
testLabel.text = String(id)
categoryImageView.clipsToBounds = true
categoryImageView.contentMode = .scaleAspectFit
}
}
Sorry for the formatting...

Answer 1

Register your custom collectionview cell named "categoryCell" in viewDidLoad()
categoryCollectionView.register(UINib(nibName: "categoryCell", bundle:
nil),forCellWithReuseIdentifier: "categoryCell")
categoryCollectionView.delegate = self
categoryCollectionView.dataSource = self
categoryCollectionView.reloadData()