There is UIAlertController with text field in my View Controller. When user enter name of the city, this data must be transmitted to Model, when I get coordinates of this city. But I can't to pass name of the city from View Controller to Model
My UIAlertController:
class MainScrenenViewController: UIViewController {
var delegate: ILocationGroup?
@objc func locationButtonTap() {
let alert = UIAlertController(title: "Add city", message: nil, preferredStyle: .alert)
let addButton = UIAlertAction(title: "Add", style: .default) { action in
self.delegate?.addLocation(alert.textFields?.first?.text ?? "No City")
}
alert.addAction(addButton)
let cancelButton = UIAlertAction(title: "Cancel", style: .default, handler: nil)
alert.addAction(cancelButton)
alert.addTextField { textField in
textField.placeholder = "Your City"
}
present(alert, animated: true, completion: nil)
}
My Model:
protocol ILocationGroup {
func addLocation(_ name: String)
}
class LocationGroup: ILocationGroup {
var mainScreenViewController: MainScrenenViewController?
func addLocation(_ name: String) {
mainScreenViewController?.delegate = self
let url = "https://geocode-maps.yandex.ru/1.x/?apikey=fd93783b-fe25-4428-8c3b-38b155941c8c&format=json&geocode=\(name)"
guard let url = URL(string: url) else { return }
let task = URLSession.shared.dataTask(with: url) { data, response, error in
guard let data = data, error == nil else { return }
do {
let result = try JSONDecoder().decode(LocationData.self, from: data)
print(result.response.geoObjectCollection.metaDataProperty.geocoderResponseMetaData.boundedBy.envelope.lowerCorner)
}
catch {
print("failed to convert \(error)")
}
}
task.resume()
}
}
CodePudding user response：
I think it is supposed to be var delegate: LocationGroup()
Also, I wouldn't be calling it delegate because registered delegate is a keyword in swift