Problem using an extension to load image into a custom cell - swift

Question

My last question for today. I'm too newby with swift to know what's happening but my problem is as follows:
I've use the next extension to load an image from a URL and it works when I use it in a imageView in a normal view, but when the imageView is inside of a custom cell It doesn't recognize de method so I can`t use the extension. What am I doing wrong? Thank you all in advances.
My code for the extesion is:
import UIKit
extension UIImageView {
func loadFrom(URLAddress: String) {
guard let url = URL(string: URLAddress) else {
return
}
DispatchQueue.main.async { [weak self] in
if let imageData = try? Data(contentsOf: url) {
if let loadedImage = UIImage(data: imageData) {
self?.image = loadedImage
}
}
}
}
}
And the code for the table where I try to use it into a custom cell:
import UIKit
class EventosCustomCellController: UITableViewCell {
#IBOutlet weak var imEvento: UIView!
#IBOutlet weak var txtNombreEvento: UILabel!
#IBOutlet weak var txtFechaEvento: UILabel!
#IBOutlet weak var txtEstadoEvento: UILabel!
}
class ListaEventosTableViewController: UITableViewController {
override func viewDidLoad() {
super.viewDidLoad()
self.title = "Eventos"
}
// MARK: - Table view data source
override func viewWillAppear(_ animated: Bool) {
}
override func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return eventos.contarEventos()
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "prototipoCeldaEvento", for: indexPath) as! EventosCustomCellController
let evento = eventos.buscarEventoPorID(id: indexPath.row)
cell.txtNombreEvento?.text = evento?.nombre
cell.txtFechaEvento?.text = evento?.fecha
cell.txtEstadoEvento?.text = evento?.tipo
if evento?.tipo == "deportivo"{
cell.backgroundColor = .blue}
else if evento?.tipo == "cultural"{
cell.aplicarFondoDegradado()
cell.backgroundColor = .green}
else{
cell.backgroundColor = .red}
cell.layer.masksToBounds = true
cell.layer.cornerRadius = 10
//There is no method loadFrom when I try to use as follows
cell.imEvento?.loadFrom(URLAddress: (evento?.imagenes![0])!)
return cell
}
// Override to support conditional editing of the table view.
override func tableView(_ tableView: UITableView, canEditRowAt indexPath: IndexPath) -> Bool {
// Return false if you do not want the specified item to be editable.
return true
}
}
After updating code my problem is that the cell isn`t growthn appropiately

Answer 1

I think, you better use UIImageView instead of UIView because your extension for UIImageView and you can access to this.
#IBOutlet weak var imEvento: UIImageView!
and then it is good to override the prepareForReuse method like this:
override func prepareForReuse() {
super.prepareForReuse()
imEvento.image = nil
}
you can read more about the prepareForReuse method from apple documentation