Navigator

Navigator.of(context).push()

IconButton(
  onPressed: () {
    Navigator.of(context).push(
      MaterialPageRoute(builder: (BuildContext context) {
        return SettingsScreen();
      }), // MaterialPageRoute
    );  // Navigator
  },  // onPressed
  icon: Icon(
    Icons.settings,
    color: RED_COLOR,
  ),  // Icon
),  // IconButton
Dart
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Navigator.of(context).pushNamed()

// main.dart
void main() {
  runApp(
    MaterialApp({
      initialRoute: '/',
      routes: {
        '/': (context) => HomeScreen(),
        '/one': (context) => RouteOneScreen(),
        '/two': (context) => RouteTwoScreen(),
        '/three': (context) => RouteThreeScreen(),
      },
    ),
  );
}



// pushNamed
// [home(), one(), two(), three()]
() {
	Navigator.of(context).pushNamed('/one', argument: 123);
}

// pushReplacementNamed
// [home(), one(), two(), three()]
() {
	Navigator.of(context).pushReplacementNamed('/one', arguement)
}

// pushNamedandRemoveUntil
// [home(), one(), two(), three()]
() {
	Navigator.of(context).pushNamedandRemoveUntil(
		'/three',
		(route) => route.settings.name == '/',
	);
}


// target screen
@override
  Widget build(BuildContext context) {
    final arguments = ModalRoute.of(context)!.settings.arguments; 
		
		return ...,
Dart
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Unpoppable

return WillPopScope(
	onWillPop: () async {
		// true - popable
		// false - unpopable
		return canPop = Navigator.of(context).canPop();
	},
	child: MainLayout(),
)

Navigator.of(context).popUntil((route) => route.isFirst);
Dart
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needs async

Navigator.of(context).canPop(); return true or false

Navigator.of(context).maybePop(); pop if routing stack is not empty