demo02 使用flutter发起http请求

首先要在pubspec.yaml里添加以下三方库

然后dependencies 下面的flutter里加上

dependencies:

  flutter:

  sdk: flutter

  http: ^0.12.0+1

最后在命令行里输入flutter packages get 安装支持库

 

import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;

void main() => runApp(new MyApp());
class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    // TODO: implement build
    return new MaterialApp(
      title: 'http请求示例',
      home: new Scaffold(
        appBar: new AppBar(
          title: new Text('http请求示例'),
        ),
        body: new Center(
          child: new RaisedButton(
              onPressed: (){
                var url = 'http://httpbin.org/';
                //向'http://httpbin.org/'发送get请求
                http.get(url).then((response) {
                  print("状态: ${response.statusCode}");
                  print("正文: ${response.body}");
                });
              },
            child: new Text('发起http请求'),
          ),
        ),
      ),
    );
  }
}