How to present UIAlertController when not in a view controller?

Question

Scenario: The user taps on a button on a view controller. The view controller is the topmost (obviously) in the navigation stack. The tap invokes a utility class method call

Answer 1

Shorthand way to do present the alert in Objective-C:

[[[[UIApplication sharedApplication] keyWindow] rootViewController] presentViewController:alertController animated:YES completion:nil];

Where alertController is your UIAlertController object.

NOTE: You'll also need to make sure your helper class extends UIViewController