import 'dart:convert'; import 'package:http/http.dart'; var username = 'user'; var password = 'password'; var auth = 'Basic ${base64Encode(utf8.encode('$username:$password'))}'; Map headers = { 'content-type': 'application/json', 'accept': 'application/json', 'authorization': auth }; Future callAPI(param) async { Response r = await get(Uri.parse('http://localhost:8080/api/v1/projects'), headers: {'authorization': auth}); print(r.statusCode); print(r.body); return r; }