Login

import 'dart:convert';

import 'package:flutter/material.dart';
import 'package:flutter_login_bloc/src/custom/clipper.dart';
import 'package:http/http.dart' as http;
import 'package:http/http.dart';
import 'package:shared_preferences/shared_preferences.dart';
import '../resources/api/api_provider.dart';
import '../resources/utils/shared_preferences.dart';
import 'home_page.dart';

class Login extends StatefulWidget {

  @override
  _LoginState createState() => _LoginState();
}

enum LoginStatus{
  notSignIn,
  signIn
}

class _LoginState extends State<Login> {

  LoginStatus _loginStatus = LoginStatus.notSignIn;
  String username, password;
  final _key = GlobalKey<FormState>();
  bool _secureText = true;

  Client client = Client();
  static final String baseUrl = 'http://192.3.168.178/restapi/';

  showHide() {
    setState(() {
      _secureText = !_secureText;
    });
  }

  check() {
    final form = _key.currentState;
    if(form.validate()) {
      form.save();
      ApiProvider().login(username,password).then((value){
        setState(() {
          _loginStatus = value;
        });
      });
    }
  }

//  login() async {
//    final response = await http.post(baseUrl + "login.php", body: {
//      "username" : username,
//      "password" : password
//    });
//
//    final data = json.decode(response.body);
//    String status = data['status'];
//    String message = data['message'];
//    if (status == "success") {
//      setState(() {
//        SessionManager().savePref(status).then((value){
//          setState(() {
//            _loginStatus = value;
//          });
//        });
//      });
//      print(message);
//    } else {
//      print(message);
//    }
//  }

//  savePref(String status) async {
//    SharedPreferences preferences = await SharedPreferences.getInstance();
//    setState(() {
//      preferences.setString("status", status);
//    });
//  }

//  var status;
//  getPref() async {
//    SharedPreferences preferences = await SharedPreferences.getInstance();
//    setState(() {
//      status = preferences.getString("status");
//      _loginStatus = status == "success" ? LoginStatus.signIn : LoginStatus.notSignIn;
//    });
//  }

//  signOut() async {
//    SharedPreferences preferences = await SharedPreferences.getInstance();
//    setState(() {
//      preferences.setString("status", null);
////      preferences.commit();
//      _loginStatus = LoginStatus.notSignIn;
//    });
//  }

  @override
  void initState() {
    super.initState();
    SessionManager().getPref().then((value){
      setState(() {
        _loginStatus = value;
      });
    });
  }

  @override
  Widget build(BuildContext context) {
    switch (_loginStatus) {
      case LoginStatus.notSignIn:
        return Scaffold(
          backgroundColor: Colors.white,
          body: Form(
            key: _key,
            child: SafeArea(
              child: ListView(
                physics: ClampingScrollPhysics(),
                children: <Widget>[
                  ClipPath(
                    clipper: MyClipper(),
                    child: Container(
                      decoration: BoxDecoration(
                        image: DecorationImage(
                          image: NetworkImage('https://raw.githubusercontent.com/samarthagarwal/FlutterScreens/master/assets/images/full-bloom.png'),
                          fit: BoxFit.cover,
                        ),
                      ),
                      alignment: Alignment.center,
                      padding: EdgeInsets.only(top: 150.0, bottom: 100.0),
                    ),
                  ),
                  formCardLogin(),
                  loginButton(),
                ],
              ),
            ),
          ),
        );
        break;
      case LoginStatus.signIn:
        return Home();
        break;
    }
  }

  Widget formCardLogin() {
    return Container(
      child: Column(
        children: <Widget>[
          Container(
            margin: EdgeInsets.only(top: 20.0, right: 20.0, left: 20.0, bottom: 10.0),
            alignment: Alignment.centerLeft,
            child: Text(
              "Username",
              style: TextStyle(color: Colors.grey, fontSize: 16.0),
            ),
          ),
          Container(
            margin: EdgeInsets.only(right: 20.0, left: 20.0),
            decoration: BoxDecoration(
              border: Border.all(
                color: Colors.grey.withOpacity(0.5),
                width: 1.0,
              ),
              borderRadius: BorderRadius.circular(20.0),
            ),
            child: Row(
              mainAxisSize: MainAxisSize.max,
              children: <Widget>[
                Padding(
                  padding:
                  EdgeInsets.symmetric(vertical: 10.0, horizontal: 15.0),
                  child: Icon(
                    Icons.person_outline,
                    color: Colors.grey,
                  ),
                ),
                Container(
                  height: 30.0,
                  width: 1.0,
                  color: Colors.grey.withOpacity(0.5),
                  margin: EdgeInsets.only(left: 00.0, right: 10.0),
                ),
                Flexible(
                  child: TextFormField(
                    validator: (e) {
                      if(e.isEmpty) {
                        return "Please Insert Username";
                      }
                    },
                    onSaved: (e) => username = e,
                    decoration: InputDecoration(
                      border: InputBorder.none,
                      hintText: 'Enter your email',
                      hintStyle: TextStyle(color: Colors.grey),
                    ),
                  ),
                )
              ],
            ),
          ),
          Container(
            margin: EdgeInsets.only(top: 10.0, right: 20.0, left: 20.0, bottom: 10.0),
            alignment: Alignment.centerLeft,
            child: Text(
              "Password",
              style: TextStyle(color: Colors.grey, fontSize: 16.0),
            ),
          ),
          Container(
            margin: EdgeInsets.only(right: 20.0, left: 20.0),
            decoration: BoxDecoration(
              border: Border.all(
                color: Colors.grey.withOpacity(0.5),
                width: 1.0,
              ),
              borderRadius: BorderRadius.circular(20.0),
            ),
            child: Row(
              mainAxisSize: MainAxisSize.max,
              children: <Widget>[
                Padding(
                  padding:
                  EdgeInsets.symmetric(vertical: 10.0, horizontal: 15.0),
                  child: Icon(
                    Icons.lock_open,
                    color: Colors.grey,
                  ),
                ),
                Container(
                  height: 30.0,
                  width: 1.0,
                  color: Colors.grey.withOpacity(0.5),
                  margin: EdgeInsets.only(left: 00.0, right: 10.0),
                ),
                Flexible(
                  child: TextFormField(
                    obscureText: _secureText,
                    onSaved: (e) => password = e,
                    decoration: InputDecoration(
                      border: InputBorder.none,
                      suffixIcon: IconButton(
                          icon: Icon(_secureText ? Icons.visibility_off : Icons.visibility),
                          onPressed: showHide
                      ),
                      hintText: 'Enter your password',
                      hintStyle: TextStyle(color: Colors.grey),
                    ),
                  ),
                )
              ],
            ),
          ),
        ],
      ),
    );
  }

  Widget loginButton() {
    return Column(
      children: <Widget>[
        GestureDetector(
          child: Container(
            margin: EdgeInsets.only(top: 40.0),
            padding: EdgeInsets.only(left: 20.0, right: 20.0),
            child: DecoratedBox(
              decoration: BoxDecoration(
                  borderRadius: BorderRadius.all(Radius.circular(30.0)),
                  color: Colors.blue
              ),
              child: Row(
                mainAxisAlignment: MainAxisAlignment.spaceBetween,
                children: <Widget>[
                  Padding(
                    padding: EdgeInsets.only(left: 20.0),
                    child: Text(
                      "LOGIN",
                      style: TextStyle(color: Colors.white),
                    ),
                  ),
                  Transform.translate(
                    offset: Offset(15.0, 0.0),
                    child: Container(
                      margin: EdgeInsets.only(right: 20.0),
                      padding: EdgeInsets.all(10.0),
                      child: DecoratedBox(
                        decoration: BoxDecoration(
                            borderRadius: BorderRadius.all(Radius.circular(28.0)),
                            color: Colors.white
                        ),
                        child: Icon(
                          Icons.arrow_forward,
                          color: Colors.blue,
                        ),
                      ),
                    ),
                  )
                ],
              ),
            ),
          ),
          onTap: () {
            check();
          },
        ),
      ],
    );
  }

}







api_porvider
import 'dart:async';
import 'package:flutter_login_bloc/src/models/test.dart';
import 'package:http/http.dart' show Client;
import 'dart:convert';

import '../../ui/login_page.dart';
import '../utils/shared_preferences.dart';

class ApiProvider {

  Client client = Client();
  static final String baseUrl = 'http://192.3.168.178/restapi/';

  Future<ResultTest> loginProvider(var body) async {
    final response = await client.post(baseUrl + 'login.php', body: body, headers: {"Accept":"application/json"});
    if (response.statusCode == 200) {
      return ResultTest.fromJson(json.decode(response.body));
    } else {
      throw Exception('Failed');
    }
  }
  LoginStatus _loginStatus ;

  Future<LoginStatus> login(String username, String password) async {
    final response = await client.post(baseUrl + "login.php", body: {
      "username" : username,
      "password" : password
    });

    final data = json.decode(response.body);
    String status = data['status'];
    String message = data['message'];
    if (status == "success") {
        SessionManager().savePref(status);
      print(message);
      _loginStatus = LoginStatus.signIn;
    } else {
      print(message);
      _loginStatus = LoginStatus.notSignIn;
    }
    return _loginStatus;
  }

//  static final String baseUrl = '';
//  static final String body = "{\"kode\": 1,\"pesan\": \"Login Berhasil\",\"result\": [{\"npm\": \"1154089\",\"kd_prodi\": \"14\",\"nm_dosen\": \"SYAFRIAL FACHRI PANE\",\"kd_matkul\": \"T4I811B4\",\"nm_matkul\": \"TUGAS AKHIR\",\"semester\": \"8\",\"status\": \"1\"},{\"npm\": \"1154089\",\"kd_prodi\": \"14\",\"nm_dosen\": \"MOHAMAD HARRY KHOMAS SAPUTRA\",\"kd_matkul\": \"T4I811C4\",\"nm_matkul\": \"INTERNSHIP II\",\"semester\": \"8\",\"status\": \"1\"}]}";
//
//  Future<Users> loginProvider(String username, String password) async {
////    final response = await client.get(baseUrl + 'login.php' + username + password);
////    final response = await client.get(baseUrl + 'login.php?npm=$username&password=$password');
//    if (1 == 1) {
//      return Users.fromJson(json.decode(body));
//    } else {
//      throw Exception('Failed');
//    }
//  }

}



shared_prefre

import 'package:shared_preferences/shared_preferences.dart';

import '../../ui/login_page.dart';

class SessionManager {
//  Future<LoginStatus> savePref(String status) async {
//    SharedPreferences preferences = await SharedPreferences.getInstance();
//    preferences.setString("status", status);
//    return LoginStatus.signIn;
//  }
 savePref(String status) async {
    SharedPreferences preferences = await SharedPreferences.getInstance();
    preferences.setString("status", status);
  }

  LoginStatus _loginStatus = LoginStatus.notSignIn;
  Future<LoginStatus> getPref() async {
    SharedPreferences preferences = await SharedPreferences.getInstance();
    if(preferences.getString("status") == "success"){
      _loginStatus = LoginStatus.signIn;
    }
    print(_loginStatus);
    return _loginStatus;
  }

  signOut() async {
    SharedPreferences preferences = await SharedPreferences.getInstance();
      preferences.setString("status", null);
  }
}




home

import 'package:flutter/material.dart';
import 'package:flutter_login_bloc/src/resources/utils/shared_preferences.dart';

import 'login_page.dart';

class Home extends StatefulWidget {

  @override
  _HomeState createState() => _HomeState();
}

class _HomeState extends State<Home> {


  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        actions: <Widget>[
          IconButton(
            icon: Icon(Icons.lock_open),
            onPressed: () {
              setState(() {
                SessionManager().signOut();
                Navigator.pushReplacement(context, MaterialPageRoute(builder:(context) => Login() ));
              });
            },
          ),
        ],
      ),
      body: SafeArea(
        child: Center(
          child: Text("Home"),
        ),
      ),
    );
  }
}