Unable to naviagte to another screen in flutter - flutter

Question

I'm trying to take value from the method channel and using the value I'm trying to navigate another screen. When I try to navigate from TextButton onclick it's navigating but when I try to navigate from the value received by the method channel it's not navigating to another screen.
Example: I'm receiving openScreen1 from the method channel in the below code from methodCall.method and assigning the method to route variable but the page is not navigating
main_screen.dart
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:gg_app/screen1.dart';
import 'package:gg_app/screen2.dart';
class HomeScreen extends StatefulWidget {
static const routeName = "Home-Screen";
const HomeScreen({Key? key}) : super(key: key);
#override
State<HomeScreen> createState() => _HomeScreenState();
}
class _HomeScreenState extends State<HomeScreen> {
static const channel = MethodChannel('scribeemr.in/mic');
#override
void initState() {
// TODO: implement initState
channel.setMethodCallHandler(nativeMethodCallHandler);
super.initState();
}
Future<dynamic> nativeMethodCallHandler(MethodCall methodCall) async {
var route = methodCall.method;
await navigateTo(route, context);
}
Future<dynamic> navigateTo(String route, BuildContext context) async {
switch (route) {
case "openScreen1":
await Navigator.of(context).pushNamed(Screen1.routeName);
break;
case "openScreen2":
await Navigator.of(context).pushNamed(Screen2.routeName);
break;
default:
break;
}
}
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: Text("Home Screen")),
body: Column(
children: [
TextButton(
onPressed: () {
navigateTo("openScreen1", context);
},
child: Text("Screen 1")),
TextButton(
onPressed: () {
navigateTo("openScreen2", context);
},
child: Text("Screen 2")),
],
),
);
}
}
main.dart
import 'package:flutter/material.dart';
import 'package:gg_app/home_screen.dart';
import 'package:gg_app/screen1.dart';
import 'package:gg_app/screen2.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
// This widget is the root of your application.
#override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: HomeScreen(),
routes: {
HomeScreen.routeName: (context) => HomeScreen(),
Screen1.routeName: (context) => Screen1(),
Screen2.routeName: (context) => Screen2(),
},
);
}
}
screen1.dart
import 'package:flutter/material.dart';
class Screen1 extends StatefulWidget {
static const routeName = "Screen1";
const Screen1({ Key? key }) : super(key: key);
#override
State<Screen1> createState() => _Screen1State();
}
class _Screen1State extends State<Screen1> {
#override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(title: Text("Screen 1")),
);
}
}