前提：mac环境下

1、下载flutter

$ git clone -b beta https://github.com/flutter/flutter.git

2、配置环境变量

$ subl ~/.bash_profile

添加

export PATH_TO_FLUTTER_GIT_DIRECTORY=/Users/Mac/flutter
export PATH=${PATH}:${PATH_TO_FLUTTER_GIT_DIRECTORY}/bin

3、安装flutter

flutter doctor

4、Android studio 安装flutter插件

5、新建一个flutter项目

New--- new flutter project

6、hello world

找到main.dart文件

import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      title: 'Welcome to Flutter',
      home: new Scaffold(
        appBar: new AppBar(
          title: new Text('Welcome to Flutter'),
        ),
        body: new Center(
          child: new Text('Hello World'),
        ),
      ),
    );
  }
}

7、运行结果

image