Swift - adding cells in UITableView - ios

Question

I have a UITableView and I am trying to add some content (Whish) in my case. I have set up everything programmatically but somehow adding cells is not working for me.
This is my UITableView and custom Wish Class for my data:
import UIKit
class WhishlistTableViewController: UITableViewController {
public var wishList : [Wish]?
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.register(WhishCell.self, forCellReuseIdentifier: WhishCell.reuseID)
self.wishList?.append(Wish(withWishName: "Test"))
}
// MARK: - Table view data source
override func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return wishList?.count ?? 0
}
override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: WhishCell.reuseID, for: indexPath)
let currentWish = self.wishList![indexPath.row]
cell.textLabel?.text = currentWish.wishName
return cell
}
}
class Wish: NSObject {
public var wishName : String?
init(withWishName name: String) {
super.init()
wishName = name
}
}
And this is how I am creating the WishlistTableView inside my other UIViewController:
let theTableView: WhishlistTableViewController = {
let v = WhishlistTableViewController()
v.view.layer.masksToBounds = true
v.view.layer.borderColor = UIColor.white.cgColor
v.view.layer.borderWidth = 2.0
v.view.translatesAutoresizingMaskIntoConstraints = false
return v
}()
and its constraints:
theTableView.view.topAnchor.constraint(equalTo: wishlistView.topAnchor, constant: 180.0),
theTableView.view.bottomAnchor.constraint(equalTo: wishlistView.bottomAnchor, constant: 0),
theTableView.view.leadingAnchor.constraint(equalTo: wishlistView.safeAreaLayoutGuide.leadingAnchor, constant: 30.0),
theTableView.view.trailingAnchor.constraint(equalTo: wishlistView.safeAreaLayoutGuide.trailingAnchor, constant: -30.0),
The TableView appears just fine with its constraints but adding cells is not working and I have no idea why.. Grateful for every help :)

Answer 1

Replace
public var wishList : [Wish]?
with
public var wishList = [Wish]()
As you never init wishList so adding item here wishList?.append won't do anything
self.wishList.append(Wish(withWishName: "Test"))
Also remove this as it's the default
// MARK: - Table view data source
override func numberOfSections(in tableView: UITableView) -> Int {
return 1
}