我尝试使用超文本传输协议包，但我无法将URL链接分配给http. get（），它表明我无法将字符串分配给参数Uri。
import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
import 'dart:async';
import 'dart:convert';
class MyHomePage extends StatefulWidget {
final String title;
MyHomePage({Key key, this.title}) : super(key: key);
@override
_MyHomePageState createState() => _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
Future<List<User>> _getUsers(){
http.get("http://www.json-generator.com/api/json/get/crbzxbbLIi?indent=2");
}
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: new Text(widget.title),
),
body: Container(
),
);
}
}
要将URL字符串转换为Uri，只需使用Uri. parse（url）。
代码示例
class _MyHomePageState extends State<MyHomePage> {
Future<List<User>> _getUsers() {
http.get(Uri.parse("http://www.json-generator.com/api/json/get/crbzxbbLIi?indent=2"));
}
// ...
}
您必须使用Uri：
https://flutter.dev/docs/cookbook/networking/fetch-data
Future<http.Response> fetchAlbum() {
return http.get(Uri.https(w.json-generator.com/api/json/get/crbzxbbLIi?indent=2"));
}
