This is the source code for my article:

• Flutter Bottom Navigation Bar with Multiple Navigators: A Case Study

In this example each tab has its own navigation stack. This is so that we don’t lose the navigation history when switching tabs.

This is a very common use case for a lot of apps.

How is it built?

• Create an app with a Scaffold and a BottomNavigationBar.
• In the Scaffold body, create a Stack with one child for each tab.
• Each child is an Offstage widget with a child Navigator.
• Don't forget to handle Android back navigation with WillPopScope.

Read the full story on my article:

• Flutter Bottom Navigation Bar with Multiple Navigators: A Case Study

• Brian Egan: for suggesting to use Stack + Offstage & Navigator widgets.