How to implement the simplest system for receiving messages and displaying them in a Flutter list?

Question

Dart

I have an application that asks the server for messages, how to implement a system of marking them as read, only those to which the user has scrolled, the fact is that ListView.builder draws items with a margin and marking all loaded items as read is not entirely correct, since not all of them seen by user

Answer 1

https://github.com/rvamsikrishna/inview_notifier_list
I think this package will solve the problem or tell you which way to dig