Notes on alerts

alerts.swift

// first let's create a function for the alert
// remember to connect this code to a button on the storyboard.

@IBAction func showAlert() {
  
  // We have to (1) set up the alert 
  // then (2) we have to set up the action to the alert (the button inside the alert)
  let alert = UIAlertController(title: "Hello, World!", message: "This is my first alert!", prefferredStyle: .alert)
  let action = UIAlertAction(title: "Awesome", style: .default, handler: nil)
  
  // (3) Now we have to add the action to the alert
  alert.addAction(action)
  
  // (4) Now we program this alert's presentation
  present(alert, animated: true, completion: nil)
  
}