Question

我收到此错误：A value of type 'Future<Response>' can't be assigned to a variable of type 'Response'. Try changing the type of the variable, or casting the right-hand type to 'Response'.

    import 'package:flutter/material.dart';
    import 'package:http/http.dart' as http;
    
    class loadding extends StatefulWidget {
      @override
      _loaddingState createState() => _loaddingState();
    }
    
    class _loaddingState extends State<loadding> {
      void gateData() async {
        var url =
            Uri.parse('http://worldtimeapi.org/api/timezone/Africa/Addis_Ababa');

//here is The Error occur at http.get(url), 

        http.Response response = http.get(url);

      }
    
      @override
      Widget build(BuildContext context) {
        return Scaffold();
      }
    }

Answer 1

我自己解决的。当我在 HTTP.get 前面添加 await 关键字时，错误消失了。

喜欢这个 http.Response response = await http.get(url);

Answer 2

我已经编辑了你的代码，所以请你可以试试这个代码。

  void gateData() async {
    var url =
        Uri.parse('http://worldtimeapi.org/api/timezone/Africa/Addis_Ababa');
  http.Response response =await http.get(url);

  }

您需要使用 async 和 await 未来类型。

Answer 3

试试这个

 void gateData() async {
        var url =
            Uri.parse('http://worldtimeapi.org/api/timezone/Africa/Addis_Ababa');

//here is The Error occur at http.get(url), 

        http.Response response = await http.get(url);

      }

“Future<Response>”类型的值不能分配给“Response”类型的变量

3 个答案: