[Getting Input From User] Code for obtaining input from the user in an iOS application

GettingInputAlertController.swift

import UIKit

// NEEDS to be used as an Xcode Snippet.


func getInputFromUser(){
  
  let alert = UIAlertController(title: <#Domain-specific title: String>, message: "", preferredStyle: .alert)
        
                                
        var textField = UITextField()
        
        // Using the above textField reference, we can extend the scope of the alertTextField in the closure so that it can be accessed outside of its
        // narrow scope.                        
        alert.addTextField { alertTextField in
            alertTextField.placeholder = <#Domain-specific placeholder: String>
            textField = alertTextField
        }
        
        // Defining actions of OK and Cancel Buttons
        let okButtonAction = UIAlertAction(title: "OK", style: .default) { _ in
           // what will happen once the user clicks the Add New Todo button on our UIAlert
            
            // grab the text from the text field and assign to local constant if the value is not an empty string.
            guard let textFieldText = textField.text, !textFieldText.isEmpty else { return }
            
            // Do stuff with the input                                                               
                                                                                                                                        
        }
        
        let cancelButtonAction = UIAlertAction(title: "Cancel", style: .cancel) { _ in
            alert.dismiss(animated: true, completion: nil)
        }
        
        // Adding actions to alertVC
        alert.addAction(okButtonAction)
        alert.addAction(cancelButtonAction)
        
        // Present Alert
        present(alert, animated: true, completion: nil)
}