How can Objective C apps handle push notifications with custom actions or deep links?

Handling push notifications with custom actions or deep links in Objective C apps involves implementing the UNNotificationServiceExtension to modify the notification content dynamically. Here are the steps to achieve this:

• Create a Notification Service Extension target in Xcode for your app.
• Implement the didReceiveNotificationRequest:withContentHandler: method to customize the notification content.
• Add custom actions to the notification by defining UNNotificationCategory with UIUserNotificationAction instances.
• Set up deep links by registering URL schemes or Universal Links in the app’s Info.plist file.
• Handle deep link URLs in the AppDelegate application:openURL:options: method to navigate users to the relevant content.