acodeb

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      theme: ThemeData(

acodeb

import 'package:flutter/material.dart';

void main() => runApp(
  new MaterialApp(home: new MyApp())
);

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => new _MyAppState();
}