flutter---helloworld

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget{
  @override
  Widget build(BuildContext context) {
    
    return new MaterialApp(
      title: "flutter",
      home: new Scaffold(
        appBar: new AppBar(
          title: new Text("hello world---"),
        ),
        body: new Center(
          child: new Text("你好！！"),
        ),
      ),
    );
  }
}

8AF0BB4A-9D2B-47B2-947B-DD908B627414.png