Bottom navigation bar is reloading all the widgets each time I press a navigation item
The solution to keep the pages alive when switching the tabs is wrapping your Pages in a IndexedStack.
class Tabbar extends StatefulWidget {
Tabbar({this.screens});
static const Tag = "Tabbar";
final List<Widget> screens;
@override
State<StatefulWidget> createState() {
return _TabbarState();
}
}
class _TabbarState extends State<Tabbar> {
int _currentIndex = 0;
Widget currentScreen;
@override
Widget build(BuildContext context) {
var _l10n = PackedLocalizations.of(context);
return Scaffold(
body: IndexedStack(
index: _currentIndex,
children: widget.screens,
),
bottomNavigationBar: BottomNavigationBar(
fixedColor: Colors.black,
type: BottomNavigationBarType.fixed,
onTap: onTabTapped,
currentIndex: _currentIndex,
items: [
BottomNavigationBarItem(
icon: new Icon(Icons.format_list_bulleted),
title: new Text(_l10n.tripsTitle),
),
BottomNavigationBarItem(
icon: new Icon(Icons.settings),
title: new Text(_l10n.settingsTitle),
)
],
),
);
}
void onTabTapped(int index) {
setState(() {
_currentIndex = index;
});
}
}