[flutter] 기본

import 'package:flutter/material.dart';

void main() {

  runApp(App());

}

class App extends StatelessWidget{

  @override

  Widget build(BuildContext context) {

    return MaterialApp(

      home : Scaffold(

        appBar : AppBar(

          centerTitle : true,

          elevation: 0,

          title: Text("Hello Flutter!"),

        ),

        body : Center(

          child: Text("Hello world!"),

        ),

      ),

    );

  }

}