Register Screen On Pressed method given, I believe there is a problem with calling Firebase user = result.user
onPressed: () async {
if(_formKey.currentState.validate()){
setState(() => loading = true);
dynamic result = await _auth.registerWithEmailAndPassword(email, password);
FirebaseUser user = result.user;
await DatabaseService(uid: user.uid).newUserInfo(
_nameC.text,
_cityC.text,
_contactnoC.toString()
);
if(result == null) {
setState(() {
error = 'Please supply a valid email';
loading = false;
});
}}},
// Database backend
class DatabaseService {
final String uid;
DatabaseService ({this.uid});
final CollectionReference userdata2 = Firestore.instance.collection('UserData');
Future newUserInfo(String name, String city, String contactno) async {
return await userdata2.document(uid).setData({
'name' : name,
'city' : city,
'contactno' : contactno
});
}}
// authentication backend
// register with email and password
Future registerWithEmailAndPassword(String email, String password) async {
try {
AuthResult result = await _auth.createUserWithEmailAndPassword(email: email, password: password);
FirebaseUser user = result.user;
DatabaseService(uid: user.uid);
return _userFromFirebaseUser(user);
} catch (error) {
print(error.toString());
return null;
} }
// user.dart
class User {
final String uid;
User({this.uid});
}
Related
I can save the email and the password with Firebase Authentication. I also save this information with Cloud Firestore. But how can I add and save the displayName after registering?
my code:
Future registerWithEmailAndPassword(String email, String password) async {
try {
AuthResult result = await _auth.createUserWithEmailAndPassword(
email: email, password: password);
FirebaseUser user = result.user;
// create a new document for the user with the uid
await DatabaseService(uid: user.uid)
.updateUserData('User', user.email, 'test.de/test.png', user.uid);
return _userFromFirebaseUser(user);
} catch (e) {
print(e.toString());
return null;
}
}
the register form button:
onPressed: () async {
if (_formKey.currentState.validate()) {
setState(() => loading = true);
dynamic result = await _auth
.registerWithEmailAndPassword(
email, password);
if (result == null) {
setState(() {
error = 'Valid email, please';
loading = false;
});
}
}
}
You can use updateProfile method given in the FirebaseUser class to update the name and photo url.
updateProfile({String displayName, String photoURL}).
For email you can use the different method
updateEmail(String newEmail) which is a async method.
Or to save the username directly into the firestore, after successful login you can use 'set' method of the FirebaseFirestore to save email, password and the username.
Here's the code if you want to save the Username together with the email and password
final FirebaseAuth _auth = FirebaseAuth.instance;
//register with email & password & save username instantly
Future registerWithEmailAndPassword(String name, String password, String email) async {
try {
UserCredential result = await _auth.createUserWithEmailAndPassword(email: email, password: password);
User user = result.user;
user.updateProfile(displayName: name); //added this line
return _user(user);
} catch(e) {
print(e.toString());
return null;
}
}
late User userFirebase;
Future<UserCredential> userCredential =await //Your code signin or signup
await userCredential.then((UserCredential value) {
userFirebase = value.user!;
});
await userFirebase.updateDisplayName(event.name);
You can use updateDisplayName() and updatePhotoURL() methods on a User object to add the displayName/profile image to Firebase user.
final userCredential = await _auth.createUserWithEmailAndPassword(
email: email,
password: password,
);
//After creating a user in Firebase, we then are able to change name/pictue
await userCredential.user?.updateDisplayName(name);
await userCredential.user?.updatePhotoURL(imageUrl);
As of october 2021, updateProfile() is deprecated, and you should use updateDisplayName() and updatePhotoURL() instead.
I built the google signin and email password signup app using flutter,
I want when user log to application then user's "uid" and "email" save in shared preference.
In google login I built when login then pass the boolean value and pass uid and email to shared preference. Then when users close app and when reopen then login in home screen and can get uid and email.
But when user signup or login using email password then can not pass the boolean value and uid and email to google login shared preference. In below I'll mentioned google login method and email password method.
googlelogin method
// handling google sigin in
Future handleGoogleSignIn() async {
final sp = context.read<SignInProvider>();
final ip = context.read<InternetProvider>();
await ip.checkInternetConnection();
if (ip.hasInternet == false) {
openSnackbar(context, 'Check your Internet connection', Colors.red);
googleController.reset();
} else {
await sp.signInWithGoogle().then((value) {
if (sp.hasError == true) {
openSnackbar(context, sp.errorCode.toString(), Colors.white);
googleController.reset();
} else {
// checking whether user exists or not
sp.checkUserExists().then((value) async {
if (value == true) {
// user exists
await sp.getUserDataFromFirestore(sp.uid).then((value) => sp
.saveDataToSharedPreferences()
.then((value) => sp.setSignIn().then((value) {
googleController.success();
handleAfterSignIn();
})));
} else {
// user does not exist
sp.saveDataToFirestore().then((value) => sp
.saveDataToSharedPreferences()
.then((value) => sp.setSignIn().then((value) {
googleController.success();
handleAfterSignIn();
})));
}
});
}
});
}
//login function
}
saveDataToSharedPreferences method and setSignIn boolean value (it has in a siginprovider class in another file)
class SignInProvider extends ChangeNotifier {
//instantiate of firebaseAuth, facebook and google
final FirebaseAuth firebaseAuth = FirebaseAuth.instance;
final GoogleSignIn googleSignIn = GoogleSignIn();
bool _isSignedIn = false;
bool get isSignedIn => _isSignedIn;
//hasError, errorCode, provider,uid,email,name,imageUrl
bool _hasError = false;
bool get hasError => _hasError;
String? _errorCode;
String? get errorCode => _errorCode;
String? _uid;
String? get uid => _uid;
String? _email;
String? get email => _email;
SignInProvider() {
checkSignInUser();
}
Future checkSignInUser() async {
final SharedPreferences s = await SharedPreferences.getInstance();
_isSignedIn = s.getBool('signed_in') ?? false;
notifyListeners();
}
Future setSignIn() async {
final SharedPreferences s = await SharedPreferences.getInstance();
s.setBool('signed_in', true);
_isSignedIn = true;
notifyListeners();
}
Future saveDataToSharedPreferences() async {
final SharedPreferences s = await SharedPreferences.getInstance();
await s.setString('email', _email!);
await s.setString('uid', _uid!);
notifyListeners();
}
Future getDataFromSharedPreferences() async {
final SharedPreferences s = await SharedPreferences.getInstance();
_email = s.getString('email');
_uid = s.getString('uid');
notifyListeners();
}
}
**email password signup**
void signUp(String email, String password) async {
if (_formkey.currentState!.validate()) {
await _auth
.createUserWithEmailAndPassword(email: email, password: password)
.saveDataToSharedPreferences()
.sp.setSignIn()
.then((value) => {postDetailsToFirestore()})
.catchError((e) {
Fluttertoast.showToast(msg: e!.message);
});
}
}
in email password signup has postDetailsToFirestore method
postDetailsToFirestore() async {
// calling our fireStore
//calling our user model
// sending these values
FirebaseFirestore firebaseFirestore = FirebaseFirestore.instance;
User? user = _auth.currentUser;
UserModel userModel = UserModel();
if (user != null) {
//writing all the values
userModel.email = user?.email;
userModel.uid = user?.uid;
await firebaseFirestore
.collection("users")
.doc(user?.uid)
.set(userModel.toMap());
Fluttertoast.showToast(msg: "Account created successfully ");
Navigator.pushAndRemoveUntil(
(context),
MaterialPageRoute(builder: (context) => HomeScreen()),
(route) => false);
}
}
in email password signup I called
these 2 methods but show this error
when signup how to pass uid and emaill to saveDataToSharedPreferences method and pass sp.setSignIn() boolean like as in google signing?
You are trying to use method saveDataToSharedPreferences from Future class, not from auth. For fix this issue, call prefs from main object:
final result = await _auth.createUserWithEmailAndPassword(
email: email,
password: password,
);
result.saveDataToSharedPreferences()
.sp.setSignIn()
// etc.
I have this Firebase Authentication Providers with who I can create an user, Sign In and Sign Out with the methods (only with email and password)
My problem I that in the UI I want to show data from the current User once the user has Sign In and I don't know how.
For example showing the email in a TextWidget or get the email as a variable for other stuff.
final firebaseAuthProvider = Provider<FirebaseAuth>((ref) {
return FirebaseAuth.instance;
});
class AuthenticationService {
final FirebaseAuth _firebaseAuth;
final Reader read;
AuthenticationService(this._firebaseAuth, this.read);
Stream<User?> get authStateChange => _firebaseAuth.authStateChanges();
Future<String> signIn({required String email, required String constrasena, required String nombreUsuario}) async {
try {
await _firebaseAuth.signInWithEmailAndPassword(
email: email,
password: constrasena,
);
return "Login Successful";
} on FirebaseAuthException catch (e) {
return e.message ?? 'Error';
}
}
Future<String> signUp({required String email, required String constrasena, required String nombreUsuario}) async {
try {
await _firebaseAuth.createUserWithEmailAndPassword(
email: email,
password: constrasena,
);
read(addPerson(Person(nombre_de_usuario: nombreUsuario, email: email, videosVistos: 0)));
return "Signup Successful";
} on FirebaseAuthException catch (e) {
print(e.message);
return e.message ?? 'Error';
}
}
Future<void> signout() async {
await _firebaseAuth.signOut();
}
}
final authServicesProvider = Provider<AuthenticationService>((ref) {
return AuthenticationService(ref.read(firebaseAuthProvider), ref.read);
});
final authStateProvider = StreamProvider<User?>((ref) {
return ref.watch(authServicesProvider).authStateChange;
});
Thanks You!
You can use FirebaseAuth.instance.currentUser.
Example:
Get the user on your initState.
_user = FirebaseAuth.instance.currentUser;
And on your build method:
Text(_user?.email ?? 'No email')
My app allows the user to register and sends an email for verification. However i have a problem where the user can sign in with the new account whether the email is verified or not. I have looked and cannot find a solution to this bearing in mind i'm new to flutter
My Auth Code
Future<String> signIn(String email, String password) async {
AuthResult result = await _firebaseAuth.signInWithEmailAndPassword(
email: email, password: password);
FirebaseUser user = result.user;
if (user.isEmailVerified) {
return user.uid;
} else {
return null;
}
}
Future<String> signUp(String email, String password) async {
AuthResult result = await _firebaseAuth.createUserWithEmailAndPassword(
email: email, password: password);
FirebaseUser user = result.user;
try {
await user.sendEmailVerification();
return user.uid;
} catch (e) {
print("An error occurred while trying to send email verification");
print(e.message);
}
}
sign in method
try {
if (_isLoginForm) {
userId = await widget.auth.signIn(_email, _password);
print('Signed in: $userId');
} else {
userId = await widget.auth.signUp(_email, _password);
//widget.auth.sendEmailVerification();
_showVerifyEmailSentDialog();
print('Signed up user: $userId');
}
setState(() {
_isLoading = false;
});
if (userId.length > 0 && userId != null && _isLoginForm) {
widget.loginCallback();
}
In the moment of registering, when I try to print the username which is a parameter of the function, it just won't print anything on the screen and I cannot understand why.
Future registerWithEmailAndPassword(String username, String email, String password) async {
try {
AuthResult result = await _auth.createUserWithEmailAndPassword(email: email, password: password);
FirebaseUser user = result.user;
// create a new document for the user with the uid
print(username);
await DatabaseService(uid: user.uid).updateUserData(username);
return _userFromFirebaseUser(user);
} catch (error) {
print(error.toString());
return null;
}
}
Edit: this is the function which calls the registerWithEmailAndPassword function:
onPressed: () async {
if (error.length > 0)
error = "";
if (_formKey.currentState.validate()) {
setState(() => loading = true);
dynamic result = await _auth.registerWithEmailAndPassword(username, email, password);
if (result == null){
if (this.mounted){
setState(() {
error = 'Please supply a valid email';
loading = false;
});}
}
}
}