context.watch<User?>() always returns null - flutter

Question

When I try to use final firebaseUser = context.watch<User?>(), the value of firebaseUser is always null when I try to hot restart the application. And the after login IN (Email verified User) to application, the adminScreen is not build. I have used StreamProvider.
Main.dart
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
import 'package:get/get.dart';
import 'package:heath_matthews_physio/screens/LogoutScreen.dart';
import 'package:heath_matthews_physio/screens/excercise.dart';
import 'package:heath_matthews_physio/screens/programsMy.dart';
import 'package:heath_matthews_physio/screens/AdminScreen.dart';
import 'package:heath_matthews_physio/screens/excerciseScreen.dart';
import 'package:heath_matthews_physio/screens/information_screen.dart';
import 'package:heath_matthews_physio/screens/login.dart';
import 'package:heath_matthews_physio/screens/mainScreen2.dart';
import 'package:heath_matthews_physio/screens/main_screen.dart';
import 'package:heath_matthews_physio/screens/myPrograms.dart';
import 'package:heath_matthews_physio/screens/reg_name_and_dp.dart';
import 'package:heath_matthews_physio/screens/register.dart';
import 'package:heath_matthews_physio/screens/verificationPage.dart';
import 'package:heath_matthews_physio/screens/workout-page.dart';
import 'package:heath_matthews_physio/screens/workoutScreen.dart';
import 'package:heath_matthews_physio/services/firebase_auth_methods.dart';
import 'package:heath_matthews_physio/wrapper.dart';
import 'package:provider/provider.dart';
import 'firebase_options.dart';
import 'screens/splash_screen.dart';
import 'package:firebase_core/firebase_core.dart';
Future main() async {
WidgetsFlutterBinding.ensureInitialized();
await Firebase.initializeApp(
options: DefaultFirebaseOptions.currentPlatform,
);
runApp(
MaterialApp(
home: MyApp(),
debugShowCheckedModeBanner: false,
),
);
}
final navigatorKey = GlobalKey<NavigatorState>();
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
// This widget is the root of your application.
#override
Widget build(BuildContext context) {
return MultiProvider(
providers: [
Provider<FirebaseAuthMethods>(
create: (_) => FirebaseAuthMethods(FirebaseAuth.instance),
),
StreamProvider(
create: (context) => context.read<FirebaseAuthMethods>().authState,
initialData: Null,
),
],
child: GetMaterialApp(
navigatorKey: navigatorKey,
debugShowCheckedModeBanner: false,
initialRoute: '/',
routes: {
// When navigating to the "/" route, build the FirstScreen widget.
'/': (context) => const Splash(),
// When navigating to the "/second" route, build the SecondScreen widget.
'/wrapper': (context) => wrapper(),
'/mainScreen': (context) => const mainScreen(),
'/mainScreen2': (context) => const mainScreen2(),
'/loginScreen': (context) => const Login(),
'/registerScreen': (context) => const Register(),
'/informationScreen': (context) => const informationScreen(),
'/mainScreen2': (context) => const mainScreen2(),
'/reg_name_and_dp': (context) => reg_name_and_dp(),
'/myPrograms': (context) => const myPrograms(),
'/adminScreen': (context) => adminScreen(),
'/program': (context) => program(),
'/workout-page': (context) => workoutScreen(),
// '/exerciseScreen':(context)=>excerciseScreen(),
'/exercise': (context) => exercise(),
'/workoutScreen': (context) => workoutScreen1(),
'/logout': (context) => logoutScreen(),
'/verification': (context) => verificationPage(),
},
theme: ThemeData(
primarySwatch: Colors.blue,
accentColor: Color(0xFF193669),
),
),
);
}
}
splash_screen.dart
import 'package:flutter/material.dart';
import 'package:heath_matthews_physio/DynamicSize/size.dart';
class Splash extends StatefulWidget {
const Splash({Key? key}) : super(key: key);
#override
_SplashState createState() => _SplashState();
}
class _SplashState extends State<Splash> {
#override
void initState() {
super.initState();
_navigateTologin();
}
_navigateTologin() async {
await Future.delayed(Duration(milliseconds: 1500), () {});
// Navigator.pushReplacementNamed(context, '/mainScreen');
Navigator.pushReplacementNamed(context, '/wrapper');
}
#override
Widget build(BuildContext context) {
return Container(
decoration: const BoxDecoration(
gradient: LinearGradient(
begin: Alignment.topCenter,
end: Alignment.bottomCenter,
colors: [
Color.fromARGB(178, 25, 54, 105),
Colors.white,
Color(0xFFEDC152)
])),
child: Padding(
padding: EdgeInsets.all(DynamicSize.Aaheight(78.0)),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
crossAxisAlignment: CrossAxisAlignment.center,
children: [
Image.asset("images/HMP LOGO.png"),
],
),
),
);
}
}
wrapper.dart
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'screens/AdminScreen.dart';
import 'screens/main_screen.dart';
class wrapper extends StatelessWidget {
const wrapper({Key? key}) : super(key: key);
#override
Widget build(BuildContext context) {
final firebaseUser = context.watch<User?>();
print("User : ${firebaseUser}"); //This always print null
if (firebaseUser != null) {
return adminScreen();
} else {
return mainScreen();
}
}
}
firebase_auth_methods.dart
import 'package:firebase_auth/firebase_auth.dart';
import 'package:flutter/material.dart';
import 'package:heath_matthews_physio/screens/register.dart';
class FirebaseAuthMethods {
final FirebaseAuth _auth;
FirebaseAuthMethods(this._auth);
//State Management
Stream<User?> get authState => _auth.idTokenChanges();
//Email Sign Up Function
Future<void> singUpWithEmail({
required String email,
required String password,
required BuildContext context,
}) async {
try {
await _auth.createUserWithEmailAndPassword(
email: email, password: password);
await sendVerification(context);
} on FirebaseAuthException catch (e) {
print(e.message);
}
}
//Email LogIn Function
Future<void> signInWithEmail(
{required String email,
required String password,
required BuildContext context}) async {
try {
await _auth.signInWithEmailAndPassword(email: email, password: password);
if (!_auth.currentUser!.emailVerified) {
await sendVerification(context);
}
} on FirebaseAuthException catch (e) {
print(e.message);
}
}
//Send Email Verification
Future<void> sendVerification(BuildContext context) async {
try {
_auth.currentUser!.sendEmailVerification();
popUpVerificationMsg(context);
} on FirebaseAuthException catch (e) {
print(e.message);
}
}
}
login.dart
import 'package:flutter/material.dart';
// import 'package:dotted_line/dotted_line.dart';
import 'package:heath_matthews_physio/DynamicSize/size.dart';
import 'package:heath_matthews_physio/services/firebase_auth_methods.dart';
import 'package:provider/provider.dart';
class Login extends StatefulWidget {
const Login({Key? key}) : super(key: key);
#override
State<Login> createState() => _LoginState();
}
class _LoginState extends State<Login> {
final emailController = TextEditingController();
final passwordController = TextEditingController();
#override
void dispose() {
emailController.dispose();
passwordController.dispose();
super.dispose();
}
//To Control PassWord Visibiltiy
late bool _visibility;
Future popUpConfirm(BuildContext context) {
return showDialog(
context: context,
builder: (BuildContext context) {
return Dialog(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(DynamicSize.Faheight(16))),
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
mainAxisSize: MainAxisSize.min,
children: [
Padding(
padding: EdgeInsets.only(
left: DynamicSize.Fawidth(31),
top: DynamicSize.Faheight(24),
right: DynamicSize.Fawidth(31)),
child: Image.asset('images/EmailSent.png'),
),
//Msg
SizedBox(height: DynamicSize.Faheight(24)),
Padding(
padding: EdgeInsets.only(
left: DynamicSize.Fawidth(16),
right: DynamicSize.Fawidth(16),
bottom: DynamicSize.Faheight(32)),
child: Text(
"You will receive an email with intructions on how to reset your password in a few minutes.\n\nNote : Don't forget to check your spam mail box.\n\nThank you :)",
style: TextStyle(
fontFamily: 'DMSans',
fontSize: DynamicSize.Faheight(16),
fontWeight: FontWeight.w400,
letterSpacing: DynamicSize.Fawidth(0.5),
color: Color(0xFF193669),
fontStyle: FontStyle.normal,
),
),
)
],
),
);
},
);
}
Future popUpDialog(BuildContext context) {
return showDialog(
context: context,
builder: (BuildContext context) {
return Dialog(
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(DynamicSize.Faheight(16))),
child: SingleChildScrollView(
child: Column(
mainAxisAlignment: MainAxisAlignment.center,
mainAxisSize: MainAxisSize.min,
children: [
Padding(
padding: EdgeInsets.only(
left: DynamicSize.Fawidth(31),
top: DynamicSize.Faheight(16),
right: DynamicSize.Fawidth(31)),
child: Image.asset('images/Illustration-forgot-password.png'),
),
//Forgot password Text
SizedBox(height: DynamicSize.Faheight(24)),
Padding(
padding: EdgeInsets.only(left: DynamicSize.Fawidth(24)),
child: Align(
alignment: Alignment.centerLeft,
child: Text(
'Forgot your password?',
style: TextStyle(
fontStyle: FontStyle.normal,
color: Color(0xFF193669),
fontFamily: 'DMSans',
fontSize: DynamicSize.Faheight(16),
fontWeight: FontWeight.w500,
letterSpacing: DynamicSize.Fawidth(1),
),
),
),
),
//Email Text
SizedBox(height: DynamicSize.Faheight(36)),
Padding(
padding: EdgeInsets.only(left: DynamicSize.Fawidth(24)),
child: Align(
alignment: Alignment.centerLeft,
child: Text(
'Email',
style: TextStyle(
fontStyle: FontStyle.normal,
color: Color(0xFF193669),
fontFamily: 'DMSans',
fontSize: DynamicSize.Faheight(12),
fontWeight: FontWeight.w700,
letterSpacing: DynamicSize.Fawidth(1),
),
),
),
),
//Email TextField
SizedBox(height: DynamicSize.Faheight(9)),
Padding(
padding:
EdgeInsets.symmetric(horizontal: DynamicSize.Fawidth(24)),
child: TextField(
decoration: InputDecoration(
hintText: 'Email address',
hintStyle: TextStyle(
color: Color(0xFF636363),
),
focusedBorder: new UnderlineInputBorder(
borderSide: BorderSide(color: Color(0xFF193669)),
),
),
keyboardType: TextInputType.emailAddress,
),
),
//Button
SizedBox(height: DynamicSize.Faheight(24)),
Padding(
padding:
EdgeInsets.symmetric(horizontal: DynamicSize.Fawidth(24)),
child: SizedBox(
width: double.infinity,
height: DynamicSize.Faheight(39),
child: OutlinedButton(
onPressed: () {
Navigator.pop(context);
popUpConfirm(context);
},
style: OutlinedButton.styleFrom(
side: BorderSide(
color: Color(0xFF193669),
),
backgroundColor: Color(0xFFF0F2F4),
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(
DynamicSize.Faheight(15))),
),
child: Text(
'Send me reset password instructions',
textAlign: TextAlign.center,
style: TextStyle(
fontFamily: 'DMSans',
fontStyle: FontStyle.normal,
fontWeight: FontWeight.w500,
fontSize: DynamicSize.Faheight(11),
letterSpacing: DynamicSize.Fawidth(0.8),
color: Color(0xFF193669),
),
),
),
),
),
SizedBox(height: DynamicSize.Faheight(30)),
],
),
),
);
},
);
}
#override
void initState() {
super.initState();
_visibility = false;
}
void LoginUser() {
context.read<FirebaseAuthMethods>().signInWithEmail(
email: emailController.text.trim(),
password: passwordController.text.trim(),
context: context);
}
#override
Widget build(BuildContext context) {
return Scaffold(
resizeToAvoidBottomInset: false,
body: Column(
crossAxisAlignment: CrossAxisAlignment.center,
children: [
//Grettings
SizedBox(height: DynamicSize.Faheight(150)),
Container(
child: Text(
"Welcome Back",
style: TextStyle(
fontFamily: 'DMSams',
fontSize: DynamicSize.Faheight(30),
fontWeight: FontWeight.w700,
color: Color(0xff193669),
letterSpacing: DynamicSize.Fawidth(0.5),
),
),
),
SizedBox(height: DynamicSize.Faheight(17)),
Container(
margin: EdgeInsets.symmetric(horizontal: DynamicSize.Fawidth(17)),
child: Text(
'Hey, nice seeing you again !! Please login/register to continue further',
textAlign: TextAlign.center,
style: TextStyle(
fontFamily: 'DMSans',
fontSize: DynamicSize.Faheight(14),
fontWeight: FontWeight.w600,
color: Color(0xff193669),
letterSpacing: DynamicSize.Fawidth(0.5),
),
),
),
//User Credentials
SizedBox(height: DynamicSize.Faheight(60)),
Container(
padding: EdgeInsets.symmetric(horizontal: DynamicSize.Fawidth(19)),
margin: EdgeInsets.symmetric(horizontal: DynamicSize.Fawidth(25)),
alignment: Alignment.center,
height: DynamicSize.Faheight(50),
decoration: BoxDecoration(
color: Color(0xFFF3F3F3),
borderRadius: BorderRadius.circular(DynamicSize.Faheight(15)),
boxShadow: [
BoxShadow(
offset: Offset(0, DynamicSize.Faheight(2)),
color: Color.fromARGB(141, 0, 0, 0),
blurRadius: DynamicSize.Faheight(3),
),
BoxShadow(
offset: Offset(DynamicSize.Fawidth(-2), 0),
color: Color(0xFFF3F3F3),
blurRadius: DynamicSize.Faheight(1),
),
BoxShadow(
offset: Offset(DynamicSize.Fawidth(2), 0),
color: Color(0xFFF3F3F3),
blurRadius: DynamicSize.Faheight(1),
),
],
),
child: TextField(
controller: emailController,
style: TextStyle(
fontFamily: 'DMSams',
fontSize: DynamicSize.Faheight(14),
letterSpacing: DynamicSize.Fawidth(0),
),
decoration: InputDecoration(
hintText: "Email address",
border: InputBorder.none,
),
keyboardType: TextInputType.emailAddress,
),
),
//Password field
SizedBox(height: DynamicSize.Faheight(15)),
Container(
padding: EdgeInsets.only(
left: DynamicSize.Fawidth(19), right: DynamicSize.Fawidth(8)),
margin: EdgeInsets.symmetric(horizontal: DynamicSize.Fawidth(25)),
alignment: Alignment.center,
height: DynamicSize.Faheight(50),
decoration: BoxDecoration(
color: Color(0xFFF3F3F3),
borderRadius: BorderRadius.circular(DynamicSize.Faheight(15)),
boxShadow: [
BoxShadow(
offset: Offset(0, DynamicSize.Faheight(2)),
color: Color.fromARGB(141, 0, 0, 0),
blurRadius: DynamicSize.Faheight(3),
),
BoxShadow(
offset: Offset(DynamicSize.Fawidth(-2), 0),
color: Color(0xFFF3F3F3),
blurRadius: DynamicSize.Faheight(1),
),
BoxShadow(
offset: Offset(DynamicSize.Fawidth(2), 0),
color: Color(0xFFF3F3F3),
blurRadius: DynamicSize.Faheight(1),
),
],
),
child: TextField(
controller: passwordController,
textAlignVertical: TextAlignVertical.center,
style: TextStyle(
fontFamily: 'DMSams',
fontSize: DynamicSize.Faheight(14),
letterSpacing: DynamicSize.Fawidth(0),
),
decoration: InputDecoration(
hintText: "Password",
border: InputBorder.none,
suffixIcon: IconButton(
splashRadius: 1,
splashColor: Colors.transparent,
icon: Icon(
_visibility ? Icons.visibility_off : Icons.visibility),
color: Color(_visibility ? (0xFF193669) : (0xFF666161)),
onPressed: () => setState(() => _visibility = !_visibility),
),
),
obscureText: !_visibility,
),
),
//Forgot Password Button
SizedBox(height: DynamicSize.Faheight(13)),
Container(
padding: EdgeInsets.only(right: DynamicSize.Fawidth(36)),
alignment: Alignment.topRight,
child: GestureDetector(
onTap: () => popUpDialog(context),
child: Text(
"Forgot Password ?",
style: TextStyle(
fontFamily: "DMSans",
fontSize: DynamicSize.Faheight(15),
color: Color(0xFF193669),
),
),
),
),
//Sign In Button
SizedBox(height: DynamicSize.Faheight(40)),
Padding(
padding: EdgeInsets.symmetric(horizontal: DynamicSize.Fawidth(15)),
child: SizedBox(
width: double.infinity,
height: DynamicSize.Faheight(50),
child: TextButton(
onPressed: LoginUser,
// Navigator.pushNamedAndRemoveUntil(
// context, '/adminScreen', (route) => false),
style: TextButton.styleFrom(
backgroundColor: Color(0xFF193669),
shape: RoundedRectangleBorder(
borderRadius:
BorderRadius.circular(DynamicSize.Faheight(15)),
)
// padding: EdgeInsets.symmetric(horizontal: 1),
),
child: Text(
'SIGN IN',
style: TextStyle(
fontFamily: 'DMSans',
fontSize: DynamicSize.Faheight(15),
letterSpacing: DynamicSize.Fawidth(0.5),
color: Colors.white,
),
),
),
),
),
//Register Button
SizedBox(height: DynamicSize.Faheight(16)),
Padding(
padding: EdgeInsets.symmetric(horizontal: DynamicSize.Fawidth(15)),
child: SizedBox(
width: double.infinity,
height: DynamicSize.Faheight(50),
child: TextButton(
onPressed: () =>
Navigator.pushNamed(context, '/registerScreen'),
style: TextButton.styleFrom(
backgroundColor: Color(0xFF193669),
shape: RoundedRectangleBorder(
borderRadius:
BorderRadius.circular(DynamicSize.Faheight(15)),
)
// padding: EdgeInsets.symmetric(horizontal: 1),
),
child: Text(
'REGISTER',
style: TextStyle(
fontFamily: 'DMSans',
fontSize: DynamicSize.Faheight(15),
letterSpacing: DynamicSize.Fawidth(0.5),
color: Colors.white,
),
),
),
),
),
// Row(
// children: [
// Text("No Account?",style: GoogleFonts.dmSans(
// fontSize: 12.0,
// color: Color(0xFF2F3F70)
// ),),
// Text("Sign Up",style: TextStyle(
// fontSize:12.0,
// fontWeight: FontWeight.w500,
// decoration: TextDecoration.underline,
// fontFamily: 'dmSams'
// ),
// )
// ],
// )
],
),
);
}
}