Im trying to navigate to homepage after login, this works, i followed this one tutorial:
https://www.youtube.com/watch?v=oJ5Vrya3wCQ&t=307s
But, my problem is when i go to register button > register an user and it takes me straight to the login page but when I fill in the login forms and log in, nothing happens, i must to do a "hot restart" to see my homepage, it is as if some widget did not rebuild. So i should do any better clean way to do this statemanagement?
Main:
import 'package:firebase_auth/firebase_auth.dart'; import 'package:firebase_core/firebase_core.dart'; import 'package:flutter/material.dart'; import 'package:plantsapp/screens/login_page.dart'; import 'package:plantsapp/screens/plant_screen.dart'; import 'package:plantsapp/screens/register_page.dart'; import 'package:plantsapp/screens/shop_scree_page.dart'; import 'package:plantsapp/services/authentication_service.dart'; import 'package:provider/provider.dart'; void main() async { WidgetsFlutterBinding.ensureInitialized(); await Firebase.initializeApp(); runApp(MyApp()); } class MyApp extends StatelessWidget { // This widget is the root of your application. @override Widget build(BuildContext context) { return MultiProvider( providers: [ ChangeNotifierProvider<AuthenticationService>( create: (_) => AuthenticationService(FirebaseAuth.instance), ), StreamProvider(create: (context) => context.read<AuthenticationService>().authStateChanges) ], child: MaterialApp( title: 'Flutter Plant Shop UI', debugShowCheckedModeBanner: false, home: AuthenticationWrapper(), routes: { 'registerpage': (context) => RegisterPage(), 'loginpage': (context) => LoginPage(), 'homepage': (context) => PlantScreen(), }, //theme: ThemeData.dark(), ), ); } } // ignore: must_be_immutable class AuthenticationWrapper extends StatelessWidget with ChangeNotifier{ @override Widget build(BuildContext context) { final firebaseuser = context.watch<User>(); notifyListeners(); if(firebaseuser != null) { notifyListeners(); return ShopScreen(); } else { notifyListeners(); return LoginPage(); } } } Authentication service:
import 'package:firebase_auth/firebase_auth.dart'; import 'package:flutter/cupertino.dart'; class AuthenticationService with ChangeNotifier{ final FirebaseAuth _firebaseAuth; AuthenticationService(this._firebaseAuth); Stream<User> get authStateChanges => _firebaseAuth.authStateChanges(); Future<String> signIn({String email, String password}) async { try { await _firebaseAuth.signInWithEmailAndPassword(email: email, password: password); notifyListeners(); return "Signed in"; } on FirebaseAuthException catch (e) { print(e); return e.message; } } Future<String> signUp({String email, String password, BuildContext context}) async{ try { await _firebaseAuth.createUserWithEmailAndPassword(email: email, password: password); print('USUARIO REGISTRADO'); Navigator.pushReplacementNamed(context, 'loginpage'); return "Signed Up"; } on FirebaseAuthException catch (e) { print(e.message); return e.message; } } Future<void> signOut() async{ await _firebaseAuth.signOut(); notifyListeners(); } } LoginPage:
import 'package:flutter/material.dart'; import 'package:plantsapp/services/authentication_service.dart'; import 'package:provider/provider.dart'; class LoginPage extends StatefulWidget{ @override _LoginPageState createState() => _LoginPageState(); } class _LoginPageState extends State<LoginPage>{ final TextEditingController emailController = TextEditingController(); final TextEditingController passwordController = TextEditingController(); @override Widget build(BuildContext context) { return Scaffold( body: SingleChildScrollView( child: Container( margin: EdgeInsets.symmetric(horizontal: 20, vertical: 80), padding: EdgeInsets.symmetric(horizontal: 20, vertical: 80), child: Column( mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[ Text( 'Login', style: TextStyle(fontSize: 20), ), _emailForm(), _passwordForm(), _button(), _buttonRegister(), ], ), ), ), ); } Widget _emailForm() { return TextField( controller: emailController, decoration: InputDecoration(hintText: ('Email')), ); } Widget _passwordForm() { return TextField( controller: passwordController, decoration: InputDecoration(hintText: ('Password')), ); } Widget _button() { return RaisedButton( child: Text('Login'), onPressed: () { Provider.of<AuthenticationService>(context, listen: false).signIn( email: emailController.text.trim(), password: passwordController.text.trim()); }, ); } _buttonRegister() { return RaisedButton( child: Text('Registrarse'), onPressed: () { Navigator.pushReplacementNamed(context, 'registerpage'); }, ); } } RegisterPage:
import 'package:flutter/material.dart'; import 'package:plantsapp/services/authentication_service.dart'; import 'package:provider/provider.dart'; class RegisterPage extends StatefulWidget { RegisterPage({Key key}) : super(key: key); @override _RegisterPageState createState() => _RegisterPageState(); } class _RegisterPageState extends State<RegisterPage> { final TextEditingController emailController = TextEditingController(); final TextEditingController passwordController = TextEditingController(); @override Widget build(BuildContext context) { return Scaffold( body: SingleChildScrollView( child: Container( margin: EdgeInsets.symmetric(horizontal: 20, vertical: 80), padding: EdgeInsets.symmetric(horizontal: 20, vertical: 80), child: Column( mainAxisAlignment: MainAxisAlignment.center, children: <Widget>[ Text( 'Registrarse', style: TextStyle(fontSize: 30), ), _emailForm(), _passwordForm(), _button(), ], ), ), ), ); } Widget _emailForm() { return TextField( controller: emailController, decoration: InputDecoration(hintText: ('Email')), ); } Widget _passwordForm() { return TextField( controller: passwordController, decoration: InputDecoration(hintText: ('Password')), ); } Widget _button() { return RaisedButton( child: Text('Registrarse'), onPressed: () { Provider.of<AuthenticationService>(context, listen: false).signUp( email: emailController.text.trim(), password: passwordController.text.trim(), context: context); }, ); } } 
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