通知后端已禁用推送通知的最佳方法是什么？

Question

What's the best way to notify a backend that a user has disabled push notifications?

I've been playing around with a few options but I'm not sure which is the best one to proceed with: Option 1: Check if the user has disabled push notifications in the applicationDidFinishLaunching method like this:

UNUserNotificationCenter.current().getNotificationSettings { ... }

The only pitfall to this is let's say a user disables push notifications, and then never reopens the app. The applicationDidFinishLaunching method will never get called and therefore my app will never realize notifications were disabled and won't act appropriately.

Option 2: Is there a way backend is able to check if notifications have been disabled?

Answer 1

Ok, so after looking through the docs I may have figured it out.

Apple should send a 410 status code if the device token is no longer active which means that the user must have stopped push notifications or deleted the app.