Which delegate method handles the receipt of push notifications?

The delegate method that handles the receipt of push notifications is specifically designed to receive and process notifications when they arrive. The method userNotificationCenter(_:didReceive:withCompletionHandler:) is part of the UserNotifications framework in iOS. It is called when a notification is delivered while the app is in the foreground, allowing developers to present the notification's content in an appropriate way, such as displaying an alert or updating the user interface.

This method allows for a completion handler that must be called when processing the notification is finished, which is essential for managing the notification lifecycle correctly. The ability to manage notifications interactively is a crucial feature of iOS applications, especially to enhance user experience by enabling timely and contextually relevant interactions.

In contrast, the other options cater to different functionalities. The didFinishLaunchingWithOptions method is used primarily for initialization when the application starts, and does not deal directly with notifications. The didReceiveMemoryWarning method is intended for memory management, informing the app to release any resources that can be recreated later. Finally, applicationWillTerminate handles the scenario when the app is about to terminate, dealing with cleanup tasks. None of these methods are specifically tailored for managing the receipt of push notifications.