[Flutter] Flutter hot reloading is not working to display changes

I have two files, main.dart and sections.dart.

I have defined a few widgets in section.dart and used them in main.dart file, when I run flutter run command changes are displayed on screen, but when I press R to hot reload, nothing changes on screen.

main.dart:

import 'package:flutter/material.dart';
import 'sections.dart';

void main() {
runApp(MyApp());
}
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
debugShowCheckedModeBanner: false,
title: 'Share IDEASS',
home: Scaffold(
appBar: AppBar(
title: Text('IDEASs'),
),
body: ListView(
children: [
labelsSection,
],
),
),
);
}
}


Sections.dart:

import 'package:flutter/material.dart';
class MyApp extends StatelessWidget {

Widget build(BuildContext context) {
return MaterialApp(
title: 'Share IDEAS',

);
}
}

Column labelSectionMethod(color,IconData icon, String label,String numbers){
return Column(
children: <Widget>[
Icon(icon, color:color),
Container(
child: Text(label,
style: TextStyle(color: color
),
),
),
Container(
child:Text(numbers,
style:TextStyle(color:color
),
),
),
],
);
}

Widget labelsSection=Container(
child: Row(
mainAxisAlignment: MainAxisAlignment.spaceEvenly,
children: [
labelSectionMethod(Colors.red,Icons.supervised_user_circle,"IDEASS","35"),
labelSectionMethod(Colors.red,Icons.favorite,"LIKE","22"),
labelSectionMethod(Colors.red,Icons.data_usage,"STREAK","12"),
],
),
);


Maybe because I am repeating:

return MaterialApp(
title: 'Share IDEAS',
);


in sections.dart, or something to do with main function.

UPDATE:
​

i moved content of sections.dart file in main.dart file still hot reload is not working.

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