Flutter App Start

main.dart

import 'package:flutter/material.dart';

void main() {
  runApp(FlutterDemo());
}

class FlutterDemo extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
          appBar: AppBar(
            title: Text('Flutter Demo'),
          ),
          body: Container(),
        ),
    );
  }
}