name: flutter_login
description: A new Flutter project.

# The following defines the version and build number for your application.
# A version number is three numbers separated by dots, like 1.2.43
# followed by an optional build number separated by a +.
# Both the version and the builder number may be overridden in flutter
# build by specifying --build-name and --build-number, respectively.
# In Android, build-name is used as versionName while build-number used as versionCode.
# Read more about Android versioning at https://developer.android.com/studio/publish/versioning
# In iOS, build-name is used as CFBundleShortVersionString while build-number used as CFBundleVersion.
# Read more about iOS versioning at
# https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
version: 1.0.0+1

environment:
  sdk: ">=2.1.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter

  # The following adds the Cupertino Icons font to your application.
  # Use with the CupertinoIcons class for iOS style icons.
  cupertino_icons: ^0.1.2
  shared_preferences: ^0.5.3+4
  http: ^0.12.0+2
  sweetalert: ^0.0.1
  device_id: ^0.1.3

dev_dependencies:
  flutter_test:
    sdk: flutter


# For information on the generic Dart part of this file, see the
# following page: https://dart.dev/tools/pub/pubspec

# The following section is specific to Flutter.
flutter:

  # The following line ensures that the Material Icons font is
  # included with your application, so that you can use the icons in
  # the material Icons class.
  uses-material-design: true

  # To add assets to your application, add an assets section, like this:
  # assets:
  #  - images/a_dot_burr.jpeg
  #  - images/a_dot_ham.jpeg

  # An image asset can refer to one or more resolution-specific "variants", see
  # https://flutter.dev/assets-and-images/#resolution-aware.

  # For details regarding adding assets from package dependencies, see
  # https://flutter.dev/assets-and-images/#from-packages

  # To add custom fonts to your application, add a fonts section here,
  # in this "flutter" section. Each entry in this list should have a
  # "family" key with the font family name, and a "fonts" key with a
  # list giving the asset and other descriptors for the font. For
  # example:
  # fonts:
  #   - family: Schyler
  #     fonts:
  #       - asset: fonts/Schyler-Regular.ttf
  #       - asset: fonts/Schyler-Italic.ttf
  #         style: italic
  #   - family: Trajan Pro
  #     fonts:
  #       - asset: fonts/TrajanPro.ttf
  #       - asset: fonts/TrajanPro_Bold.ttf
  #         weight: 700
  #
  # For details regarding fonts from package dependencies,
  # see https://flutter.dev/custom-fonts/#from-packages

import 'package:flutter/material.dart';
import 'login.dart';
import 'home.dart';

class Routes {
  Routes() {
    runApp(new MaterialApp(
      title: "Login System",
      debugShowCheckedModeBanner: false,
      home: new Login(),
      onGenerateRoute: (RouteSettings settings) {
        switch (settings.name) {
          case '/login':
            return new MyCustomRoute(
              builder: (_) => new Login(),
              settings: settings,
            );

          case '/home':
            return new MyCustomRoute(
              builder: (_) => new Home(),
              settings: settings,
            );
        }
      },
    ));
  }
}

class MyCustomRoute<T> extends MaterialPageRoute<T> {
  MyCustomRoute({WidgetBuilder builder, RouteSettings settings})
      : super(builder: builder, settings: settings);
}

import 'package:flutter_login/routes.dart';

void main() {
  new Routes();
}

import 'home.dart';
import 'dart:async';
import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:sweetalert/sweetalert.dart';
import 'package:device_id/device_id.dart';
import 'package:http/http.dart' as http;
import 'package:flutter/foundation.dart';
import 'package:shared_preferences/shared_preferences.dart';

class Login extends StatefulWidget {
  Login({Key key}) : super(key: key);

  _LoginState createState() => _LoginState();
}

class _LoginState extends State<Login> {
  final formKey = GlobalKey<FormState>();
  final nameController = TextEditingController();
  final passController = TextEditingController();

  List data;
  String _deviceid = 'Unknown';

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        leading: Icon(Icons.android),
        title: Text('Login Form'),
      ),
      body: Form(
        key: formKey,
        child: Column(
          children: <Widget>[
            _username(context),
            _password(context),
            _buttonLogin(context),
            Text("id :" + _deviceid.toString()),
          ],
        ),
      ),
    );
  }

  @override
  void initState() {
    super.initState();
    initDeviceId();
    _cekLogin();
  }

  Future<void> initDeviceId() async {
    String deviceid;

    deviceid = await DeviceId.getID;

    if (!mounted) return;

    setState(() {
      _deviceid = deviceid;
    });
  }

  Future _getLogin(String userName, String userPass, String token) async {
    String url = "http://kailham.com/apiSikar/login?userName=" +
        userName +
        "&userPass=" +
        userPass +
        "&token=" +
        token;
    var res = await http
        .get(Uri.encodeFull(url), headers: {'accept': 'application/json'});

    var response = json.decode(res.body);
    setState(() {
      data = response["data"];
    });
    if (response['status'] == true) {
      SharedPreferences pref = await SharedPreferences.getInstance();
      pref.setBool("isLogin", true);
      pref.setString("dataMessage", response['message']);
    } else {
      SharedPreferences pref = await SharedPreferences.getInstance();
      pref.setBool("isLogin", false);
      pref.setString("dataMessage", response['message']);
    }
  }

  Future _cekLogin() async {
    //SHAREDPREFERENCES
    SharedPreferences pref = await SharedPreferences.getInstance();
    if (pref.getBool("isLogin")) {
      Navigator.push(
          context, MaterialPageRoute(builder: (context) => new Home()));
    }
  }

  String validatePass(String value) {
    if (value.length < 4) {
      return 'Password Minimal 4 Karakter';
    }
    return null;
  }

  String validateUser(String value) {
    if (value.isEmpty) {
      return 'Username harus diisi';
    }
    return null;
  }

  void _showAlert(String pesan) {
    SweetAlert.show(context,
        title: "ERROR", subtitle: pesan, style: SweetAlertStyle.error);
  }

  void submit() async {
    if (formKey.currentState.validate()) {
      formKey.currentState.save();

      print(nameController.value.text);
      final userName = nameController.value.text;
      final userPass = passController.value.text;
      final token = _deviceid;

      _getLogin(userName, userPass, token);
      FocusScope.of(context).requestFocus(new FocusNode());

      // Simulate a service call
      Future.delayed(Duration(seconds: 1), () async {
        SharedPreferences pref = await SharedPreferences.getInstance();
        if (pref.getBool("isLogin") == true) {
          pref.setString("karNik", data[0]['karNik']);
          pref.setString("karNama", data[0]['karNama']);
          //pindah ke home
          SweetAlert.show(context,
              subtitle: "Checking Username...", style: SweetAlertStyle.loading);
          new Future.delayed(new Duration(seconds: 2), () {
            Navigator.pushReplacementNamed(context, "/home");
          });
        } else {
          String pesan = pref.getString("dataMessage").toUpperCase().toString();
          _showAlert(pesan);
        }
      });
    }
  }

  Widget _username(BuildContext context) {
    return Padding(
      padding: EdgeInsets.all(8.0),
      child: TextFormField(
        controller: nameController,
        validator: validateUser,
        key: Key('username'),
        decoration:
            InputDecoration(hintText: 'username', labelText: 'username'),
        style: TextStyle(fontSize: 20.0, color: Colors.black),
      ),
    );
  }

  Widget _password(BuildContext context) {
    return Padding(
      padding: EdgeInsets.all(8.0),
      child: TextFormField(
        controller: passController,
        validator: validatePass,
        key: Key('password'),
        decoration:
            InputDecoration(hintText: 'password', labelText: 'password'),
        style: TextStyle(fontSize: 20.0, color: Colors.black),
        obscureText: true,
      ),
    );
  }

  Widget _buttonLogin(BuildContext context) {
    return Padding(
      padding: EdgeInsets.all(8.0),
      child: new InkWell(
        onTap: () {
          submit();
        },
        child: new Container(
          //width: 100.0,
          height: 50.0,
          decoration: new BoxDecoration(
            color: Colors.blueAccent,
            border: new Border.all(color: Colors.white, width: 2.0),
            borderRadius: new BorderRadius.circular(10.0),
          ),
          child: new Center(
            child: new Text(
              'Login',
              style: new TextStyle(fontSize: 18.0, color: Colors.white),
            ),
          ),
        ),
      ),
    );
  }
}

import 'package:flutter/material.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'package:sweetalert/sweetalert.dart';
import 'login.dart';
import 'dart:io';

class Home extends StatefulWidget {
  Home({Key key}) : super(key: key);

  _HomeState createState() => _HomeState();
}

class _HomeState extends State<Home> {
  String nik = "";
  String nama = "";

  Future<bool> _onWillPop() {
    SweetAlert.show(context,
        subtitle: "Exit Aplications",
        style: SweetAlertStyle.confirm,
        showCancelButton: true, onPress: (bool isConfirm) {
      if (isConfirm) {
        SweetAlert.show(context,
            subtitle: "Exit...", style: SweetAlertStyle.loading);
        new Future.delayed(new Duration(seconds: 2), () {
          exit(0);
        });
      } else {
        Navigator.of(context).pop(false);
      }
      // return false to keep dialog
      return false;
    });
  }

  Future _cekLogin() async {
    //SHAREDPREFERENCES
    SharedPreferences pref = await SharedPreferences.getInstance();
    if (pref.getBool("isLogin") == false) {
      // Navigator.push(
      //     context, MaterialPageRoute(builder: (context) => new Login()));
      Navigator.pushReplacementNamed(context, "/login");
    }
  }

  Future _Logout() async {
    //SHAREDPREFERENCES
    SharedPreferences pref = await SharedPreferences.getInstance();
    pref.setBool("isLogin", false);
    pref.setString("dataMessage", "");
    pref.setString("karNik", "");
    pref.setString("karNama", "");
    Navigator.push(
        context, MaterialPageRoute(builder: (context) => new Login()));
  }

  Future _cekUser() async {
    //SHAREDPREFERENCES
    SharedPreferences pref = await SharedPreferences.getInstance();
    if (pref.getString("karNik") != null) {
      setState(() {
        nik = pref.getString("karNik");
        nama = pref.getString("karNama");
      });
    }
  }

  @override
  void initState() {
    super.initState();
    _cekLogin();
    _cekUser();
  }

  @override
  Widget build(BuildContext context) {
    return WillPopScope(
      onWillPop: _onWillPop,
      child: Scaffold(
        appBar: AppBar(
          leading: Icon(Icons.android),
          title: Text("Halaman Home"),
        ),
        body: Center(
            child: Column(
          children: <Widget>[
            //TEXT
            Text("Welcome :" + nik + " - " + nama),
            //BUTTON
            _buttonLogout(context),
          ],
        )),
      ),
    );
  }

  Widget _buttonLogout(BuildContext context) {
    return Padding(
      padding: EdgeInsets.all(8.0),
      child: new InkWell(
        onTap: () {
          SweetAlert.show(context,
              subtitle: "Logout...", style: SweetAlertStyle.loading);
          new Future.delayed(new Duration(seconds: 2), () {
            _Logout();
          });
        },
        child: new Container(
          //width: 100.0,
          height: 50.0,
          decoration: new BoxDecoration(
            color: Colors.blueAccent,
            border: new Border.all(color: Colors.white, width: 2.0),
            borderRadius: new BorderRadius.circular(10.0),
          ),
          child: new Center(
            child: new Text(
              'Logout',
              style: new TextStyle(fontSize: 18.0, color: Colors.white),
            ),
          ),
        ),
      ),
    );
  }
}