Login

login.dart

import 'package:flutter/material.dart';
import 'package:http/http.dart' show post;
import 'package:login_stateful/src/mixins/validation_mixin.dart';

class LoginScreen extends StatefulWidget {
  @override
  State<StatefulWidget> createState() {
    return LoginScreenState();
  }
}

class LoginScreenState extends State<LoginScreen> with ValidationMixin {
  final formKey = GlobalKey<FormState>();
  String email, password;

  @override
  Widget build(BuildContext context) {
    return Container(
      margin: EdgeInsets.all(20.0),
      child: Form(
        key: formKey,
        child: Column(
          children: <Widget>[
            emailField(),
            passwordField(),
            submitButton(),
          ],
        ),
      ),
    );
  }

  Widget emailField() => Padding(
        padding: const EdgeInsets.all(8.0),
        child: TextFormField(
          keyboardType: TextInputType.emailAddress,
          style: TextStyle(
            color: Colors.black,
            fontSize: 20.0,
          ),
          decoration: InputDecoration(
            labelText: "Email Address",
            hintText: "you@example.com",
            border: OutlineInputBorder(),
          ),
          validator: validateEmail,
          onSaved: (String value) {
            email = value;
          },
        ),
      );

  Widget passwordField() => Padding(
        padding: const EdgeInsets.all(8.0),
        child: TextFormField(
          style: TextStyle(
            color: Colors.black,
            fontSize: 20.0,
          ),
          obscureText: true,
          decoration: InputDecoration(
              labelText: "Password",
              hintText: "Enter the password here",
              border: OutlineInputBorder()),
          validator: validatePassword,
          onSaved: (String value) {
            password = value;
          },
        ),
      );

  Widget submitButton() => RaisedButton(
        color: Colors.lightBlue,
        onPressed: () {
          if (formKey.currentState.validate()) {
            formKey.currentState.save();
            makeNetworkCall(email, password);
          }
        },
        textColor: Colors.white,
        child: Text("Submit"),
      );

  makeNetworkCall(String email, String password) async {
    String body = "{ email : $email, password : $password }";
    var result =
        await post("http://ptsv2.com/t/1jrcm-1530596508/post", body: body);

    print(result.body);
  }
}