Firebase Notification flutter

[IMWaqasFarooq]

Hi @russellwheatley as I am new on flutter that's why I have some confusion.
i check your code, i want to know the code you added in the application class in initstate() is we should add it in every screen of the project?
because like in Android native development we just inject the firebase messaging class in the Application class of Android just like flutter have it, main class, so is there any way that we add this class in just main class.