How to send notification without being online?

Question

I am building an app that a user will put their tests and assignments and whatever in. I want to know will it be possible for my app to bring up a notification like a week a

Answer 1

I suggest you read Notifications Overview. This well help you to understand how notification works.

To now build the notification, here is the Here is the official documentation for notification.

Read and understand. When you encounter any problem then, you can come back here for the solution.