BLoC Pattern Event In Flutter

BLoC Pattern Event In Flutter :

This flutter tutorial post is BLoC pattern event in flutter.

Screenshot :

blocs package contain 4 packages

blocs package

• login
• promoter
• user : Login successfull after save the data. For example username, email etc.
• viewmodel : Constant data save. For example List.
• common_state.dart : Check the Api call or not

Every bloc pattern 3 class contains
1) state
2) event
3) bloc

For example:

Login state

• username, password is input.
• loading, loaded, error api call to response

Login event

• input username, password
• callback get the from api

Login bloc

• userNameInput, passwordInput input data.
• login is call user press button login then. That is call login_page.dart onRegisterDevice().

pubspec.yaml

yaml file use to flutter name and decscription of application, sdk version, dependencies, assets, fonts.

This application 6 dependencies add
1) cupertino_icons: ^0.1.2
2) shared_preferences:
3) intl:
4) font_awesome_flutter:
5) flutter_bloc:
6) provider:

pubspec.yaml

name: block_pattern_event
description: A new Flutter application.

version: 1.0.0+1

environment:
  sdk: ">=2.5.0 <3.0.0"

dependencies:
  flutter:
    sdk: flutter

  cupertino_icons: ^0.1.2
  shared_preferences:
  intl:
  font_awesome_flutter:
  flutter_bloc:
  provider:

dev_dependencies:
  flutter_test:
    sdk: flutter

flutter:
  uses-material-design: true

  assets:
    - assets/images/

  fonts:
    - family: Quicksand
      fonts:
        - asset: assets/fonts/quicksand_medium.ttf
          style: normal
        - asset: assets/fonts/quicksand_bold.otf
          weight: 700


    - family: Raleway
      fonts:
        - asset: assets/fonts/raleway_regular.ttf
          style: normal
        - asset: assets/fonts/raleway_medium.ttf

BLoC Package :

– Login Package :

login_bloc.dart

import 'package:bloc/bloc.dart';
import 'package:block_pattern_event/models/login.dart';
import 'login_event.dart';
import 'login_state.dart';

class LoginBloc extends Bloc<LoginEvent, LoginState> {

  void userNameInput(mobileEmail) {
    dispatch(UserNameInput(username: mobileEmail));
  }

  void passwordInput(passwordInput) {
    dispatch(PasswordInput(password: passwordInput));
  }

  void login(callback) {
    dispatch(Login(callback: callback));
  }

  @override
  LoginState get initialState => LoginState.initial();

  @override
  Stream<LoginState> mapEventToState(LoginEvent event) async* {
    if (event is UserNameInput) {
      yield currentState.copyWith(username: event.username);
    }

    if (event is PasswordInput) {
      yield currentState.copyWith(password: event.password);
    }

    if (event is Login) {
      yield currentState.copyWith(loading: true);

      try {
        yield currentState.copyWith(
          loaded: true,
          loading: false,
          error: {},
        );
        event.callback(new LoginResponse(
            mobile: '',
            id: 1,
            code: '200',
            firstName: 'admin',
            lastName: 'admin',
            username: 'Flutter Tutorial'));
      } catch (e) {
        yield currentState.copyWith(
          loaded: true,
          loading: false,
          error: {"error": "Error, Something bad happened."},
        );
      }
    }
  }
}

login_event.dart

abstract class LoginEvent {}

class UserNameInput extends LoginEvent {
  final String username;
  UserNameInput({this.username});
}

class PasswordInput extends LoginEvent {
  final String password;
  PasswordInput({this.password});
}

class Login extends LoginEvent {
  Function callback;
  Login({this.callback});
}

login_state.dart

import 'package:meta/meta.dart';
import '../common_state.dart';

class LoginState extends CommonState {
  final String username;
  final String password;
  bool loading;
  bool loaded;
  Map error;

  LoginState({
    @required this.username,
    @required this.password,
    bool loading,
    bool loaded,
    Map error,
  }) : super(
          loading: loading,
          loaded: loaded,
          error: error,
        );

  factory LoginState.initial() {
    return LoginState(
      username: "",
      password: "",
    );
  }

  LoginState copyWith(
      {bool loading,
      bool loaded,
      Map error,
      String username,
      String uid,
      String password}) {
    return LoginState(
      username: username ?? this.username,
      password: password ?? this.password,
    );
  }
}

– Promoter Package

promoter_bloc.dart

import 'dart:async';
import 'package:bloc/bloc.dart';
import 'package:block_pattern_event/blocs/viewmodel/promoter_data.dart';
import 'promoter_event.dart';
import 'promoter_state.dart';

class PromoterBloc extends Bloc<PromoterEvent, PromoterState> {

  void callPromoter() {
    dispatch(GetPromoter());
  }

  @override
  PromoterState get initialState => PromoterState.initial();

  @override
  Stream<PromoterState> mapEventToState(PromoterEvent event) async* {
    if (event is GetPromoter) {
      final promoterViewModel = PromoterViewModel();
      yield currentState.copyWith(promoters: promoterViewModel.promoterList());
    }
  }
}

promoter_event.dart

abstract class PromoterEvent {}

class GetPromoter extends PromoterEvent {}

promoter_state.dart

import 'package:block_pattern_event/models/promoter.dart';

class PromoterState {
  final List<PromoterResponse> promoters;

  PromoterState({
    this.promoters,
  });

  factory PromoterState.initial() {
    return PromoterState(
      promoters: List<PromoterResponse>(),
    );
  }

  PromoterState copyWith({
    List<PromoterResponse> promoters
  }) {
    return PromoterState(
      promoters: promoters ?? this.promoters,
    );
  }
}

– User Package

user_bloc.dart

import 'dart:async';
import 'package:bloc/bloc.dart';
import 'package:shared_preferences/shared_preferences.dart';
import 'user_event.dart';
import 'user_state.dart';

class UserBloc extends Bloc<UserEvent, UserState> {
  SharedPreferences pref;

  void saveUserName(username) {
    dispatch(SaveUserName(username: username));
  }

  void saveId(id) {
    dispatch(SaveId(id: id));
  }

  void saveAuthToken(token) {
    dispatch(SaveToken(token: token));
  }

  void saveEmail(email) {
    dispatch(SaveEmail(email: email));
  }

  void saveMobile(mobile) {
    dispatch(SaveMobile(mobile: mobile));
  }

  void getLoginDetails() {
    dispatch(GetLoginDetails());
  }

  @override
  UserState get initialState => UserState.initial();

  @override
  Stream<UserState> mapEventToState(
    UserEvent event,
  ) async* {
    if (event is SaveUserName) {

      pref.setString("username", event.username);
    }

    if (event is SaveId) {
      pref = await SharedPreferences.getInstance();
      pref.setString("id", event.id);
    }

    if (event is SaveEmail) {
      pref = await SharedPreferences.getInstance();
      pref.setString("email", event.email);
    }

    if (event is SaveToken) {
      pref = await SharedPreferences.getInstance();
      pref.setString("token", event.token);
    }

    if (event is RemoveToken) {
      pref = await SharedPreferences.getInstance();
      pref.remove("token");
    }

    if (event is SaveMobile) {
      pref = await SharedPreferences.getInstance();
      pref.setString("mobile", event.mobile);
    }

    //GET LOGIN DETAILS
    if (event is GetLoginDetails) {
      pref = await SharedPreferences.getInstance();
      yield currentState.copyWith(mobile: pref.getString('mobile'), userName: pref.getString('username'));
    }
  }
}

user_event.dart

abstract class UserEvent {}

class GetLoginDetails extends UserEvent {}

class SaveUserName extends UserEvent {
  final String username;
  SaveUserName({this.username});
}

class SaveId extends UserEvent {
  final String id;
  SaveId({this.id});
}

class SaveToken extends UserEvent {
  final String token;
  SaveToken({this.token});
}

class RemoveToken extends UserEvent {
  final String token;
  RemoveToken({this.token});
}

class SaveEmail extends UserEvent {
  final String email;
  SaveEmail({this.email});
}

class SaveMobile extends UserEvent {
  final String mobile;
  SaveMobile({this.mobile});
}

user_state.dart

import 'package:flutter/material.dart';
import 'package:meta/meta.dart';

class UserState {
  final bool loading, loaded;
  final Map error;
  final String userName, mobile;

  UserState({
    @required this.loading,
    @required this.loaded,
    @required this.error,
    @required this.userName,
    @required this.mobile,
  });

  factory UserState.initial() {
    return UserState(
      loading: false,
      loaded: false,
      error: null,
      userName: null,
      mobile: null,
    );
  }

  UserState copyWith({
    bool loading,
    bool loaded,
    Map error,
    String userName,
    String mobile,
  }) {
    return UserState(
        loading: loading ?? this.loading,
        loaded: loaded ?? this.loaded,
        error: error ?? this.error,
        userName: userName ?? this.userName,
        mobile: mobile ?? this.mobile);
  }
}

– Viewmodel Package

promoter_data.dart

import 'package:block_pattern_event/models/promoter.dart';

class PromoterViewModel {
  List<PromoterResponse> promoterItems;
  PromoterViewModel({this.promoterItems});

  promoterList() => <PromoterResponse>[
        PromoterResponse(promoterId: 1, promoterName: 'Admin'),
        PromoterResponse(promoterId: 1, promoterName: 'User'),
        PromoterResponse(promoterId: 1, promoterName: 'Local'),
        PromoterResponse(promoterId: 1, promoterName: 'Others'),
      ];
}

common_state.dart

abstract class CommonState {
   bool loading = false;
   bool loaded= false;
   Map error;

  CommonState({
    this.loading,
    this.loaded,
    this.error,
  });

  Map<String, dynamic> toMap() => {
    'loading': loading,
    'loaded': loaded,
    'error': error,
  };
}

– Models Package

login.dart

class LoginResponse {
  final double id;
  final String firstName, lastName, mobile, username, code;

  LoginResponse({
    this.id,
    this.firstName,
    this.lastName,
    this.username,
    this.code,
    this.mobile,
  });

  LoginResponse copyWith(Map<String, dynamic> json) {
    return LoginResponse(
        id: json["ID"] ?? this.id,
        firstName: json["FNAME"] ?? this.firstName,
        lastName: json["LNAME"] ?? this.lastName,
        username: json["RETAILERNAME"] ?? this.username,
        code: json["RETAILERCODE"] ?? this.code,
        mobile: json["MOBILENO"] ?? this.mobile);
  }

  LoginResponse.fromJson(Map<String, dynamic> json)
      : id = json["ID"],
        firstName = json["FNAME"],
        lastName = json["LNAME"],
        username = json["RETAILERNAME"],
        code = json["RETAILERCODE"],
        mobile = json["MOBILENO"];
}

promoter.dart

class PromoterResponse {
  final double promoterId;
  final String promoterName;

  PromoterResponse({this.promoterId, this.promoterName});
}

– Screens Package

screen package inside 2 package

• pages : View
• widgets : Custom widgets

– Pages Package

home_page.dart

import 'package:block_pattern_event/blocs/promoter/promoter_bloc.dart';
import 'package:block_pattern_event/blocs/promoter/promoter_state.dart';
import 'package:block_pattern_event/models/promoter.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';

class HomePage extends StatefulWidget {
  @override
  _HomeState createState() => _HomeState();
}

class _HomeState extends State<HomePage> {
  PromoterBloc promoterBloc;

  @override
  void initState() {
    super.initState();
    promoterBloc = BlocProvider.of<PromoterBloc>(context);

    promoterBloc.callPromoter();
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        backgroundColor: Colors.white,
        appBar: AppBar(
          title: Text('Promoter List'),
        ),
        body: Container(
            child: BlocBuilder(
                bloc: promoterBloc,
                builder: (context, PromoterState state) {
                  return ListView.builder(
                      padding: EdgeInsets.only(top: 1.0),
                      physics: BouncingScrollPhysics(),
                      itemCount: state.promoters.length,
                      itemBuilder: (BuildContext context, int index) {
                        PromoterResponse promoter = state.promoters[index];
                        return Material(
                            child: Ink(
                                color: Colors.white,
                                child: ListTile(
                                    title: Text(promoter.promoterName,
                                        style: TextStyle(
                                            color: Colors.black87,
                                            fontSize: 17)),
                                    leading: Container(
                                        width: 40,
                                        height: 40,
                                        child: Align(
                                            alignment: Alignment.center,
                                            child: Text(
                                                promoter.promoterName
                                                    .substring(0, 1),
                                                style: TextStyle(
                                                    color: Colors.black54,
                                                    fontSize: 20))),
                                        decoration: BoxDecoration(
                                            color: Colors.grey.withOpacity(0.1),
                                            borderRadius:
                                                BorderRadius.circular(40.0))),
                                    onTap: () {})));
                      });
                })));
  }
}

login_page.dart

import 'package:block_pattern_event/blocs/login/login_bloc.dart';
import 'package:block_pattern_event/blocs/login/login_state.dart';
import 'package:block_pattern_event/blocs/user/user_bloc.dart';
import 'package:block_pattern_event/models/login.dart';
import 'package:block_pattern_event/screens/widgets/common_dialogs.dart';
import 'package:block_pattern_event/utils/validator.dart';
import 'package:block_pattern_event/utils/vars.dart';
import 'package:flutter/material.dart';
import 'package:flutter_bloc/flutter_bloc.dart';

class LoginPage extends StatefulWidget {
  @override
  _LoginState createState() => _LoginState();
}

class _LoginState extends State<LoginPage> {
  final GlobalKey<FormState> _key = new GlobalKey();
  final TextEditingController _usernameController = new TextEditingController();
  final TextEditingController _passwordController = new TextEditingController();
  final scaffoldKey = new GlobalKey<ScaffoldState>();

  LoginBloc loginBloc;
  UserBloc userBloc;

  bool _validate = false;

  @override
  void initState() {
    super.initState();
    loginBloc = BlocProvider.of<LoginBloc>(context);
    userBloc = BlocProvider.of<UserBloc>(context);
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
        key: scaffoldKey,
        backgroundColor: Colors.white,
        body: ListView(children: <Widget>[
          Column(children: <Widget>[
            Padding(
              padding: const EdgeInsets.only(top: 57.0, left: 10, right: 10),
              child: Text('Flutter BLoC Pattern Event',
                  style: TextStyle(fontSize: 28), textAlign: TextAlign.center),
            ),
            new Form(key: _key, autovalidate: _validate, child: _bottomSheet()),
          ])
        ]));
  }

  Widget _bottomSheet() {
    return Container(
        margin: EdgeInsets.only(top: MediaQuery.of(context).size.height / 10),
        decoration: BoxDecoration(
          borderRadius: BorderRadius.only(
            topLeft: Radius.circular(24),
            topRight: Radius.circular(24),
          ),
          color: Colors.orange.withOpacity(0.1),
        ),
        alignment: Alignment.bottomCenter,
        padding: EdgeInsets.all(25),
        height: MediaQuery.of(context).size.height / 1.4,
        child: Column(children: <Widget>[
          Text('LOGIN',
              textAlign: TextAlign.center,
              style: TextStyle(
                  fontFamily: ralewayFont,
                  color: Colors.orange.withOpacity(0.8),
                  fontSize: 20,
                  fontWeight: FontWeight.bold)),
          _userNameTextField(),
          _passwordTextField(),
          _signInButton(),
        ]));
  }

  _userNameTextField() => BlocBuilder(
      bloc: loginBloc,
      builder: (BuildContext context, LoginState state) {
        return Padding(
            padding: const EdgeInsets.only(top: 32.0),
            child: TextFormField(
                validator: Validator.validUserName,
                controller: _usernameController,
                keyboardType: TextInputType.text,
                textAlign: TextAlign.left,
                onChanged: loginBloc.userNameInput,
                style: TextStyle(
                    color: Colors.black54,
                    fontFamily: 'quickFont',
                    fontSize: 18,
                    letterSpacing: 0.5),
                decoration: InputDecoration(
                    focusedBorder: UnderlineInputBorder(
                        borderSide: BorderSide(color: Colors.grey)),
                    enabledBorder: UnderlineInputBorder(
                        borderSide: BorderSide(color: Colors.grey)),
                    border: UnderlineInputBorder(
                        borderSide: BorderSide(color: Colors.grey)),
                    focusedErrorBorder: UnderlineInputBorder(
                        borderSide:
                            BorderSide(color: Colors.red.shade200, width: 2)),
                    errorStyle: TextStyle(color: Colors.black54),
                    hintStyle: TextStyle(
                      color: Colors.black54,
                      fontFamily: 'quickFont',
                      fontSize: 15,
                    ),
                    labelStyle: TextStyle(color: Colors.grey, fontSize: 12),
                    labelText: 'Username',
                    hintText: 'Username')));
      });

  _passwordTextField() => BlocBuilder(
      bloc: loginBloc,
      builder: (BuildContext context, LoginState state) {
        return Padding(
            padding: const EdgeInsets.only(top: 15.0),
            child: TextFormField(
                validator: Validator.validatePassword,
                controller: _passwordController,
                keyboardType: TextInputType.emailAddress,
                textAlign: TextAlign.left,
                onChanged: loginBloc.passwordInput,
                style: TextStyle(
                    color: Colors.black54,
                    fontFamily: 'quickFont',
                    fontSize: 18,
                    letterSpacing: 0.5),
                decoration: InputDecoration(
                    focusedBorder: UnderlineInputBorder(
                        borderSide: BorderSide(color: Colors.grey)),
                    enabledBorder: UnderlineInputBorder(
                        borderSide: BorderSide(color: Colors.grey)),
                    border: UnderlineInputBorder(
                        borderSide: BorderSide(color: Colors.grey)),
                    focusedErrorBorder: UnderlineInputBorder(
                        borderSide:
                            BorderSide(color: Colors.red.shade200, width: 2)),
                    errorStyle: TextStyle(color: Colors.black54),
                    hintStyle: TextStyle(
                      color: Colors.black54,
                      fontFamily: 'quickFont',
                      fontSize: 15,
                    ),
                    labelStyle: TextStyle(color: Colors.grey, fontSize: 12),
                    labelText: 'Password',
                    hintText: 'Password')));
      });

  buttonChild() {
    return Text("Login",
        style: TextStyle(
            fontFamily: quickFont,
            color: Colors.white,
            fontSize: 16,
            fontWeight: FontWeight.w500));
  }

  void onRegisterDevice() async {
    showProgress(context);
    loginBloc.login((results) {
      hideProgress(context);
      if (results is LoginResponse) {
        clearData();
        LoginResponse loginResponse = results;

        userBloc.saveAuthToken('');
        userBloc.saveUserName(loginResponse.username);
        userBloc.saveId(loginResponse.code);
        userBloc.saveMobile(loginResponse.mobile);

        Navigator.pushNamed(context, '/homepage');
      } else {}
    });
  }

  _signInButton() => BlocBuilder(
      bloc: loginBloc,
      builder: (BuildContext context, LoginState state) {
        if (state.error != null && state.error.containsKey('error')) {}
        return new Padding(
            padding: const EdgeInsets.only(top: 20.0),
            child: Row(
                mainAxisAlignment: MainAxisAlignment.center,
                children: <Widget>[
                  SizedBox(
                      width: 150,
                      height: 36,
                      child: RaisedButton(
                          color: Colors.orange,
                          onPressed: () {
                            sendToServer();
                          },
                          shape: RoundedRectangleBorder(
                            borderRadius: BorderRadius.circular(8.0),
                          ),
                          elevation: 1,
                          child: buttonChild()))
                ]));
      });

  sendToServer() {
    if (_key.currentState.validate()) {
      _key.currentState.save();
      onRegisterDevice();
    } else {
      setState(() {
        _validate = true;
      });
    }
  }

  clearData() {
    _usernameController.clear();
    _passwordController.clear();
  }
}

– Widgets Package

common_dialogs.dart

import 'package:block_pattern_event/utils/vars.dart';
import 'package:flutter/material.dart';

/*toast(String msg) {
  Fluttertoast.showToast(
      msg: msg,
      toastLength: Toast.LENGTH_SHORT,
      gravity: ToastGravity.BOTTOM,
      backgroundColor: Colors.white,
      textColor: Colors.black);
}*/

showSuccess(BuildContext context, String message, IconData icon) {
  showDialog(
      context: context,
      builder: (context) => Center(
            child: Material(
              borderRadius: BorderRadius.circular(8.0),
              color: Colors.black,
              elevation: 5.0,
              child: Padding(
                padding: const EdgeInsets.all(32.0),
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  mainAxisSize: MainAxisSize.min,
                  children: <Widget>[
                    Icon(
                      icon,
                      color: Colors.green,
                    ),
                    SizedBox(
                      height: 10.0,
                    ),
                    Text(
                      message,
                      style: TextStyle(
                          fontFamily: '$ralewayFont', color: Colors.white),
                    )
                  ],
                ),
              ),
            ),
          ));
}

showProgress(BuildContext context) {
  showDialog(
      context: context,
      barrierDismissible: false,
      builder: (context) => Center(
            child: CircularProgressIndicator()
          ));
}

hideProgress(BuildContext context) {
  Navigator.pop(context);
}

– Utils Package

validator.dart

class Validator {
  static String validateMobile(String value) {
    String pattern = r'(^[0-9]*$)';
    RegExp regExp = new RegExp(pattern);
    if (value.replaceAll(" ", "").isEmpty) {
      return 'Mobile is required';
    } else if (value.replaceAll(" ", "").length != 10) {
      return 'Mobile number must 10 digits';
    } else if (!regExp.hasMatch(value.replaceAll(" ", ""))) {
      return 'Mobile number must be digits';
    }
    return null;
  }

  static String validUserName(String value) {
    String pattern = r'(^[a-zA-Z ]*$)';
    RegExp regExp = new RegExp(pattern);
    if (value.isEmpty) {
      return 'Username is required';
    } else if (!regExp.hasMatch(value)) {
      return 'Username must be a-z and A-Z';
    }
    return null;
  }

  static String validateEmail(String value) {
    String pattern =
        r'^(([^<>()[\]\\.,;:\s@\"]+(\.[^<>()[\]\\.,;:\s@\"]+)*)|(\".+\"))@((\[[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\])|(([a-zA-Z\-0-9]+\.)+[a-zA-Z]{2,}))$';
    RegExp regExp = new RegExp(pattern);
    if (value.isEmpty) {
      return 'Email is required';
    } else if (!regExp.hasMatch(value)) {
      return 'Invalid email';
    } else {
      return null;
    }
  }

  static String validatePassword(String value) {
    if (value.isEmpty) {
      return 'Password is required';
    } else if (value.length < 4) {
      return 'Password must be at least 4 characters';
    }
    return null;
  }

  static String validateConfirmPassword(String value) {
    if (value.isEmpty) {
      return 'Confirm password is required';
    } else if (value.length < 4) {
      return 'Confirm password must be at least 4 characters';
    }
    return null;
  }

  static bool validationEqual(String currentValue, String checkValue) {
    if (currentValue == checkValue) {
      return true;
    } else {
      return false;
    }
  }

  static String address(String value) {
    if (value.isEmpty) {
      return 'Address is required';
    }
    return null;
  }

  static String state(String value) {
    if (value.isEmpty) {
      return 'State is required';
    }
    return null;
  }

  static String flatNoHouseNo(String value) {
    if (value.isEmpty) {
      return 'Flat No. / House No. is required';
    }
    return null;
  }

  static String city(String value) {
    if (value.isEmpty) {
      return 'City is required';
    }
    return null;
  }
}

vars.dart

String appName = "MileStone";
String quickFont = 'Quicksand';
String ralewayFont = 'Raleway';

String quickBoldFont = 'quicksand_bold.otf';
String quickNormalFont = 'quicksand_book.otf';
String quickLightFont = 'quicksand_light.otf';

String homeRoute = '/homepage';

int ok200 = 200;

This file contains

• Start of application
• BlocProvider
• Theme
• Route

main.dart

import 'package:block_pattern_event/blocs/promoter/promoter_bloc.dart';
import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:flutter_bloc/flutter_bloc.dart';
import 'blocs/login/login_bloc.dart';
import 'blocs/user/user_bloc.dart';
import 'screens/pages/login_page.dart';
import 'screens/pages/home_page.dart';
import 'utils/vars.dart';

void main() {
  runApp(StartApp());
}

class StartApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    SystemChrome.setSystemUIOverlayStyle(
      SystemUiOverlayStyle.dark.copyWith(
          statusBarColor: Colors.transparent,
          statusBarIconBrightness: Brightness.light),
    );

    return BlocProvider(
        builder: (context) => UserBloc(),
        child: BlocProvider(
            builder: (context) => LoginBloc(),
            child: BlocProvider(
                builder: (context) => PromoterBloc(),
                child: MaterialApp(
                    theme: ThemeData(
                        //buttonColor: Colors.white,
                        brightness: Brightness.light,
                        accentColor: Colors.orange,
                        primaryColor: Colors.orangeAccent,
                        primarySwatch: Colors.orange,
                        fontFamily: quickFont),
                    initialRoute: '/',
                    debugShowCheckedModeBanner: false,
                    routes: <String, WidgetBuilder>{
                      '/': (context) => LoginPage(),
                      '/homepage': (context) => HomePage()//LoginPage
                    }))));
  }
}

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