TableViewCell as Delegate not receiving anything - swift

Question

I don't understand why my delegate doesn't 'receive' anything. Later down the road, I want to hand over a UIImage from the ViewController into a CollectionViewCell inside a TableViewCell by using the delegate. The ViewController contains a tableView and I created a custom cell with a Nib (Xib) file. Each cell contains a collectionView. The tableview's cell class is my delegate, but when the ViewController 'sends' (is that the correct term?) anything to the delegate, nothing happens. Here is the code for my viewController:
protocol ViewControllerDelegate {
func delegateMethod(with string: String)
}
class ViewController: UIViewController {
var viewControllerdelegate: ViewControllerDelegate?
#IBOutlet weak var searchBar: UISearchBar!
#IBOutlet var suggestionTableView: UITableView!
var image = UIImage()
override func viewDidLoad() {
super.viewDidLoad() suggestionTableView.delegate = self
suggestionTableView.dataSource = self
suggestionTableView.register(UINib(nibName: "SuggestionTableViewCell", bundle: nil), forCellReuseIdentifier: "ID")
searchBar.delegate = self
}
}
extension ViewController: UITableViewDelegate, UITableViewDataSource {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return 3
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "ID", for: indexPath) as! SuggestionTableViewCell
cell.currentImage = image
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
}
}
extension ViewController: UISearchBarDelegate {
func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
print(searchText)
viewControllerdelegate?.delegateMethod(with: "Henlo")
}
}
And here is my TableViewCell class:
class SuggestionTableViewCell: UITableViewCell {
#IBOutlet weak var collectionView: UICollectionView!
var currentCollectionIndex = IndexPath()
var currentCell = UICollectionViewCell()
var currentImage = UIImage()
let controller = ViewController()
override func awakeFromNib() {
super.awakeFromNib()
controller.viewControllerdelegate = self
collectionView.delegate = self
collectionView.dataSource = self
collectionView.register(UINib(nibName: "CollectionViewCell", bundle: nil), forCellWithReuseIdentifier: "CollectionCell")
}
override func setSelected(_ selected: Bool, animated: Bool) {
super.setSelected(selected, animated: animated)
// Configure the view for the selected state
}
}
extension SuggestionTableViewCell: ViewControllerDelegate {
func delegateMethod(with string: String) {
print(string)
}
}
extension SuggestionTableViewCell: UICollectionViewDataSource, UICollectionViewDelegate {
func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
return 3
}
func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "CollectionCell", for: indexPath) as! CollectionViewCell
cell.userImage.image = currentImage
return cell
}
func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
}
Why is my delegate not working? I am so sorry for the code mess, but stackoverflow just doesn't let me organize it properly this time...

Answer 1

In the TableViewCell class you create an instance of ViewController class
let controller = ViewController()
this would be a different instance than the one that created the TableViewCell hence the delegate won't be called as you are setting the delegate of the wrong instance.
Also why do you need a delegate for this? I think creating a function in the TableViewCell class should do.