How do I get my JSON data to display in tableview - ios

Question

I am trying to get my JSON data to display in a tableview but cant get it to work. I have managed to display some data in text views but cannot get the data into the tableview
import UIKit
class ViewController: UIViewController, UITableViewDataSource {
final let url = URL(string: "http://**.***.**.**:*****/userconfig")
private var users = [User]()
#IBOutlet weak var tableView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
downloadJSON()
}
func downloadJSON() {
guard let downloadURL = url else { return }
URLSession.shared.dataTask(with: downloadURL) { (data, urlResponse, error) in
guard let data = data, error == nil, urlResponse != nil else {
print("Trouble!")
return
}
print("Success!")
do {
let decoder = JSONDecoder()
let downloadedComms = try decoder.decode(Users.self, from: data)
self.users = downloadedComms.users
DispatchQueue.main.async {
self.tableView.reloadData()
}
} catch {
print("Bad!")
}
}.resume()
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return users.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
guard let cell = tableView.dequeueReusableCell(withIdentifier: "CommCell") as? CommCell else { return UITableViewCell() }
cell.nameLbl.text = users[indexPath.row].username
cell.DOBLbl.text = users[indexPath.row].online
return cell
}
}

Answer 1

Replace This with your viewDidLoad method. You didnt set your delegete and dataSource.
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.delegate = self
self.tableView.dataSource = self
downloadJSON()
}

Answer 2

thanks for all your helpfull comments. It turns out that because I was not putting all the JSON fields in my class I needed to make the ones I was including optional.
class Users: Codable {
let users: [User]
init(users: [User]) {
self.users = users
}
}
class User: Codable {
let username: String?
let online: String?
let image: String?
init(username: String, online: String, image: String) {
self.username = username
self.online = online
self.image = image
}