Change UIAlertController message or title during its presentation - ios

Question

Is posible change the title or message text of UIAlertController while its ViewController is presenting.
For example I present an alert when a user press a button with this message:
"Waiting for redeem code"
Then I use Alamofire to make a request and get the code, after I have it I want to change the message from alert without dissmising and presenting it again, for example the new message text is it:
"Your redeem code is : ########"
Updated
Here is my code:
#IBAction func offerAction(_ sender: UIButton) {
var code: String = "Generating códe"
let message: String = "El código para redimir esta oferta es: \(code)"
let alert = UIAlertController(title: nil, message: message, preferredStyle: .alert)
let okAction = UIAlertAction(title: "Accept", style: .default, handler: nil)
let redirect = UIAlertAction(title: "Website", style: .default) { (_) in
// TODO open url web
}
if offer.redeemOfferOnline == .yes {
alert.addAction(redirect)
}
alert.addAction(okAction)
present(alert, animated: true, completion: nil)
offer.code.getRedeemCode(id: offer.id) { (success, data) in
if success {
code = data
alert.message = message
// TODO end the code of changing the message of alert
}
}
}

Answer 1

this is possible of course, please check the following:
class MyViewController: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
let alertController = UIAlertController(title: "My Title", message: "My Message", preferredStyle: .alert)
present(alertController, animated: true, completion: nil)
// Do your queries and get your new title and then set the new title
alertController.title = "Your new title"
}
}

Answer 2

It is possible to change the title and/or text AND animate the change, thusly:
[UIView transitionWithView: alertController.view
duration: 0.3
options: UIViewAnimationOptionTransitionCrossDissolve
animations: ^(void) {
alertController.message = newMessage;
}
completion: nil];
Or in Swift:
UIView.transition(with: alertController.view,
duration: 0.3,
options: .transitionCrossDissolve,
animations: { alertController.message = newMessage }
)

Answer 3

Just define you alertcontroller as:
var controller:UIAlertController?
Then initialize your alert controller like this:
controller = UIAlertController(title: "Title", message: "Yo", preferredStyle: .alert)
self.present(controller!, animated: true, completion: nil)
Now when you get the data from server, call this:
self.controller?.title = "New Title"

Answer 4

displayMyAlertMessage(userMessage: "Keshav Gera");
func displayMyAlertMessage(userMessage: String)
{
let alert = UIAlertController(title: "Success", message: userMessage, preferredStyle: .alert)
let action = UIAlertAction(title: "OK", style: .default, handler: nil)
let imgTitle = UIImage(named:"imgTitle.png")
let imgViewTitle = UIImageView(frame: CGRect(x: 10, y: 10, width: 30, height: 30))
imgViewTitle.image = imgTitle
alert.view.addSubview(imgViewTitle)
alert.addAction(action)
self.present(alert, animated: true, completion: nil)
}