Alert not showing on the modal that is presenting - swift

Question

On a view Controller when I click on the guard button -->
#IBAction func guardTapped(_ sender: Any) {
let vc = guardViewController.instanceFromNib()
vc.modalPresentationStyle = .overCurrentContext
if let appDelegate = UIApplication.shared.delegate as? AppDelegate {
appDelegate.present(vc, animated: true, completion: nil)
}
}
So In this guardViewController which is a presenting modal, I want to show an alert message when I click on the close button on guardViewController.
#IBAction func closeTapped(_ sender: Any) {
let alert = UIAlertController(title: "Alert", message: "Are You Sure", preferredStyle: .alert)
let proceedAction = UIAlertAction(title: "Proceed", style: .destructive) { (action) in
if let appDelegate = UIApplication.shared.delegate as? AppDelegate {
appDelegate.dismiss(animated: true)
}
}
alert.addAction(proceedAction)
let cancelAction = UIAlertAction(title: "Cancel", style: .cancel) { (action) in
//
}
alert.addAction(cancelAction)
if let popoverController = alert.popoverPresentationController {
popoverController.sourceView = sender as? UIView
popoverController.sourceRect = CGRect(x: (sender as AnyObject).bounds.midX, y: (sender as AnyObject).bounds.midY, width: 0, height: 0)
popoverController.permittedArrowDirections = [.any]
}
if let appDelegate = UIApplication.shared.delegate as? AppDelegate {
appDelegate.present(alert, animated: true, completion: nil)
}
}

Answer 1

Try presenting simple Alert with this Alert helper:
struct Alert {
static func showErrorAlertWithOk(on vc: UIViewController, withTitle: String, andMessage: String) {
let alert = UIAlertController(title: withTitle, message: andMessage, preferredStyle: .alert)
let action = UIAlertAction(title: "OK", style: .cancel) {_ in }
alert.addAction(action)
vc.present(alert, animated: true)
}
}
Then use is as folows:
Alert.showErrorAlertWithOk(on: yourViewController, withTitle: "SampleAlert", andMessage: "YourMessage")