// ignore_for_file: file_names import 'package:dio/dio.dart'; Future signIn(usernameController, passwordController) async { var dio = Dio(); try { var response = await dio.post('http://localhost:8080/api/v1', data: {"username": usernameController, "password": passwordController}, options: Options( headers: { 'Content-Type': 'application/json', 'Accept': 'application/json', }, )); print(response.data); return response; } catch (e) { print(e.toString()); } return null; }