如何在Flutter移动应用程序的API调用中传递基本身份验证凭据？

假设您的服务器期望

username:password

import 'dart:convert';import 'package:http/http.dart';main() async {  String username = 'test';  String password = '123£';  String basicAuth =      'Basic ' + base64Enpre(utf8.enpre('$username:$password'));  print(basicAuth);  Response r = await get('https://api.somewhere.io',      headers: <String, String>{'authorization': basicAuth});  print(r.statusCode);  print(r.body);}