Send data from TableView (present modally) to ViewController inside textfield - ios

Question

In my HomeViewController I have a text field and a button. User can write a city or touch in this button to find a city. When button is touched, a CitiesTableView shows up by segue (present modally). When choose a city of the table list, I want to send this selected city to inside the text field in HomeViewController.
class HomeViewController: UIViewController{
#IBOutlet weak var tfSearchCity: UITextField!
//Button with Segue to present Modally CitiesTableViewController
var cities = [Cities]()
}
// Protocol to receive data
extension HomeViewController: CitieFinderDelegate{
func addCity(city: Cities){
tfSearchCity.text = city.City
print(city)
}
}
}
I create a Protocol to pass data between views but is not working.
protocol CitieFinderDelegate {
func addCity(city: Cities)
}
// this TableView are presenting Modally
class CitiesTableViewController: UITableViewController {
var cities: [Cities] = []
var delegate: CitieFinderDelegate?
override func viewDidLoad() {
super.viewDidLoad()
}
// MARK: - Table view data source
override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let city = cities[indexPath.row]
let findCity = Cities(UF: city.UF, City: city.City)
delegate?.addCity(city: findCity)
}
// MARK: - Action to close the view
#IBAction func close(_ sender: UIButton) {
dismiss(animated: true, completion: nil)
}
}}

Answer 1

It seems that the delegate hasn't been assigned to HomeViewController's instance.
Make sure you have the below code in your HomeViewController
override func prepare(for segue: UIStoryboardSegue, sender _: Any?) {
if segue.identifier == "segue identifier name",
let citiesViewController = segue.destination as? CitiesTableViewController {
// cities assigned
citiesViewController.delegate = self
}
}