How to preserve widget states in flutter, when navigating using BottomNavigationBar?

Question

I\'m currently working on building a Flutter app that will preserve states when navigating from one screen, to another, and back again when utilizing BottomNavigationBar. Ju

Answer 1

For keeping state in BottomNavigationBar, you can use IndexedStack

    @override
      Widget build(BuildContext context) {
        return Scaffold(
          bottomNavigationBar: BottomNavigationBar(
            onTap: (index) {
              setState(() {
                current_tab = index;
              });
            },
            currentIndex: current_tab,
            items: [
              BottomNavigationBarItem(
                ...
              ),
              BottomNavigationBarItem(
                ...
              ),
            ],
          ),
          body: IndexedStack(
            children: [
              PageOne(),
              PageTwo(),
            ],
            index: current_tab,
          ),
        );
      }