[SWIFT] Alert with TextField

Introduction

It's convenient and useful because you don't have to arrange the UI each time you want to enter something.

Completed form

environment

Xcode 12.3

code

    let title = "Title"
    let msg = "Message"
    
    let alert = UIAlertController(title: title, message: msg, preferredStyle: .alert)
    
    //OK button settings
    let okAction = UIAlertAction(title: "OK", style: .default, handler: {(action:UIAlertAction!) -> Void in
      
      //What to do when the OK button is pressed in an alert with a text field
      //Optional binding and retrieval of the value entered in the text field
      if let str = alert.textFields?[0].text{
        print(str)
      }
    })
    
    alert.addAction(okAction)
    
    //Cancel button settings
    let cancelAction = UIAlertAction(title: "Cancel", style: .cancel, handler: nil)
    alert.addAction(cancelAction)
    
    //Add text field
    alert.addTextField(configurationHandler: {(textField:UITextField!) -> Void in
      //You can customize the text field here
      textField.placeholder = ""
      textField.keyboardType = .default
      
    })
    
    //If you want to add more than one, write that number
    // alert.addTextField(configurationHandler: {(textField: UITextField!) -> Void in
    //     textField.placeholder = "text"
    // })
    
    //Display alerts on screen
    self.present(alert, animated: true, completion: nil)
  }

If you want to use multiple textFields, write multiple addTextFields