Help me pls.
I have this error.
10Q
Unhandled Exception: NoSuchMethodError: Class 'FirebaseAuthException' has no instance getter '_message'.
E/flutter ( 5700): Receiver: Instance of 'FirebaseAuthException'
E/flutter ( 5700): Tried calling: _message
await _auth
.signInWithEmailAndPassword(
email: _emailTextEditingController.text.trim(),
password: _passwordTextEditingController.text.trim(),
)
.then((authUser) {
setState(() {
firebaseUser = authUser.user;
});
}).catchError((error) {
showDialog(
context: context,
builder: (c) {
return ErrorAlertDialog(
message: error._message == '[firebase_auth/user-not-found] There is no user record corresponding to this identifier. The user may have been deleted.'
? 'Email or password incorrect' : 'Error',
);
});
});
error._message == '[firebase_auth/user-not-found] There is no user record corresponding to this identifier. The user may have been deleted.'
? 'Email or password incorrect' : 'Error',
You are being told that there is no getter named _message for FirebaseAuthException. If you go to the code for that class, or the documentation (here) and look at the methods you have available to you,
_message is not one.
There is one there (getErrorCode) that you should be able to compare with much easier.
I think that the _message was called on null, I am not sure about this.
Related
This is error
error getting token java.util.concurrent.ExecutionException:
com.google.firebase.internal.api.FirebaseNoSignedInUserException:
Please sign in before trying to get a token. W/NetworkRequest(10820):
no auth token for request W/NetworkRequest(10820): No App Check token
for request. E/flutter (10820):
[ERROR:flutter/runtime/dart_vm_initializer.cc(41)] Unhandled
Exception: Null check operator used on a null value E/flutter (10820):
#0 _signupState.build. (package:ecommerce/Auth/signup.dart:161:28) E/flutter (10820):
E/flutter (10820):
I think error is in uid because when use id it signup successfully. If my code is wrong then please tell how I can store.
This is my code
final uid =auth.currentUser!.uid ;
auth.createUserWithEmailAndPassword(email: emailcontroller.text.toString(), password: passcontroller.text.toString()).then((signin){
ref.doc(uid).set({
"id":uid,
"name":namecontroller.text.toString(),
"email":emailcontroller.text.toString(),
"password":passcontroller.text.toString(),
"phone":phonecontroller.text.toString(),
"imageurl":url1.toString()
})
You are using uid before signUp in App. Try this code:
var uid;
await auth.createUserWithEmailAndPassword(email: emailcontroller.text.toString(), password: passcontroller.text.toString()).then((signin){
uid =auth.currentUser!.uid ;
ref.doc(uid).set({
"id":uid,
"name":namecontroller.text.toString(),
"email":emailcontroller.text.toString(),
"password":passcontroller.text.toString(),
"phone":phonecontroller.text.toString(),
"imageurl":url1.toString()
})
We are using GraphQL to connect our backend with our mobil application. We are using Riverpod to, among other things, handle global state, dependency injection, etc.
We are using a provider to handle the GraphQL cliente without any authentication header at first while the user is not authentication (this will handle unauthenticated request like login or registering), after the user is authenticated, a token provider who provides the token is updated and it must update the client provider who is user for every repository on the application:
final StateProvider<String> tokenProvider =
StateProvider<String>((_) => '', name: "Token Provider");
final graphQLClientProvider = Provider<GraphQLClient>(
(ref) {
final String token = ref.watch(tokenProvider).state;
final Link _link = HttpLink(
'http://192.168.1.36:1337/graphql',
defaultHeaders: {
if (token != '') 'Authorization': 'Bearer $token',
});
return GraphQLClient(
cache: GraphQLCache(),
link: _link,
);
},
name: "GraphQL Client Provider",
);
There is too problems here:
After updating the token, the client is changed, and from this, the function who updates the token does not finish in a proper way:
[ +141 ms] E/flutter ( 8361): [ERROR:flutter/lib/ui/ui_dart_state.cc(199)] Unhandled Exception: Bad state: Tried to use AuthNotifier after `dispose` was called.
[ ] E/flutter ( 8361):
[ ] E/flutter ( 8361): Consider checking `mounted`.
[ ] E/flutter ( 8361):
[ ] E/flutter ( 8361): #0 StateNotifier._debugIsMounted.<anonymous closure> (package:state_notifier/state_notifier.dart:128:9)
[ ] E/flutter ( 8361): #1 StateNotifier._debugIsMounted (package:state_notifier/state_notifier.dart:135:6)
[ ] E/flutter ( 8361): #2 StateNotifier.state= (package:state_notifier/state_notifier.dart:155:12)
[ ] E/flutter ( 8361): #3 AuthNotifier.signIn (package:thesis_cancer/features/auth/application/auth.notifier.dart:84:7)
[ ] E/flutter ( 8361): <asynchronous suspension>
[ ] E/flutter ( 8361): #4 _LoginCardState._submit (package:flutter_login/src/widgets/auth_card.dart:503:15)
[ ] E/flutter ( 8361): <asynchronous suspension>
[ ] E/flutter ( 8361):
It means when the token is updated, the authentication notifier who receives the repository with depends on the provided client is updated/changes (following the chain):
final authRepositoryProvider = Provider<AuthRepository>(
(ref) => GraphQLAuthRepository(client: ref.read(graphQLClientProvider)),
name: 'Auth Repository Provider',
);
final authNotifierProvider = StateNotifierProvider<AuthNotifier, AuthState>(
(ref) => AuthNotifier(
authRepository: ref.watch(authRepositoryProvider),
dataStore: ref.watch(dataStoreRepositoryProvider),
profileRepository: ref.watch(profileRepositoryProvider),
tokenController: ref.watch(tokenProvider.notifier),
userController: ref.watch(userEntityProvider.notifier),
),
name: "Authentication Notifier Provider",
);
The notification function who breaks at the conditional(if):
Future<String?> signIn({
required String username,
required String password,
}) async {
try {
final Map<String, dynamic> rawUser = await authRepository.signIn(
identifier: username, password: password) as Map<String, dynamic>;
final User sessionUser = User.fromJson(rawUser);
if (sessionUser.confirmed != false) {
tokenController.state = sessionUser.token!; <-- Bug begins here
}
await dataStore.writeUserProfile(sessionUser);
userController.state = sessionUser;
state = const AuthState.loggedIn();
} on LogInFailureByBadRequest {
return "E-posta veya şifre geçersiz.";
} on LogInFailure catch (error) {
return error.toString();
}
}
While the client appears to be changed when the token is updated, the client itself does not reflect the change (it does not include the authentication header with the token) and thus breaks the GraphQL client:
Following the comments on the issue we opened, we added the ProviderReference to our notifier (following this question) but it does not work:
AuthNotifier(
this._ref, {
required this.authRepository,
required this.profileRepository,
required this.dataStore,
required this.tokenController,
required this.userController,
}) : super(const AuthState.loading());
final ProviderReference _ref;
final ProfileRepository profileRepository;
final AuthRepository authRepository;
final DataStoreRepository dataStore;
final StateController<User?> userController;
final StateController<String> tokenController;
At this point, we don't understand what's the problem here.
UPDATE
We removed this changes both in the StateNotifier and its provider.
Getting the client at repository by read does not avoid the error:
What's the proper way to handle the authorization token and the GraphQL client with Riverpod?
Thank you.
The problem is the authRepositoryProvider:
final authRepositoryProvider = Provider<AuthRepository>(
(ref) => GraphQLAuthRepository(client: ref.read(graphQLClientProvider)),
name: 'Auth Repository Provider',
);
In this fragment, the authRepositoryProvider is using a GraphQLClient without token. When the token is updated, the graphQLClientProvider state is well updated, but the authRepositoryProvider isn't because you are using ref.read avoiding the rebuild of the authRepositoryProvider state. This implies that the authRepositoryProvider knows a disposed (and unmounted) state of graphQLClientProvider and that's why the error message.
There are 2 solutions:
Using ref.watch:
final authRepositoryProvider = Provider<AuthRepository>(
(ref) => GraphQLAuthRepository(client: ref.watch(graphQLClientProvider)),
name: 'Auth Repository Provider',
);
Passing the ref.read as parameter:
final authRepositoryProvider = Provider<AuthRepository>(
(ref) => GraphQLAuthRepository(client: ref.read),
name: 'Auth Repository Provider',
);
class AuthRepository {
AuthRepository(this.read)
final Reader read;
GraphQLClient get client => read(graphQLClientProvider);
}
Be care about using read and watch, the first one does not react to the changes but could be used anywhere, while the second one reacts to a provider's state update but only can be used in another provider constructor or in a widget that provides access to a watch or ref.watch depending on the version of Riverpod.
In addition, there is another problem in your code:
final User sessionUser = User.fromJson(rawUser);
if (sessionUser.confirmed != false) {
// In this moment, the token is updated,
// then the QrahpQLClient is updated,
// then the AuthNotifier is recreated,
// i.e the current is disposed
// and now becomes the previous
tokenController.state = sessionUser.token!; <-- Bug begins here
}
await dataStore.writeUserProfile(sessionUser);
userController.state = sessionUser;
// In this moment you are updating the state of a disposed notifier
state = const AuthState.loggedIn();
To provide a solution it is necessary to define which elements will make rebuild the AuthNotifer.state instead of recreating the notifier.
You must consider access to another notifiers bases on the ref.read and manually create the subscriptions in the StateController constructor.
In the future, when riverpod 1.0 will be released, this issue will be easy with ref.listen but now you need to rewrite your code. You can take inspiration in the bloc-to-bloc communication gide: https://bloclibrary.dev/#/architecture?id=bloc-to-bloc-communication
i think the error is in your AuthNotifier:
if (sessionUser.confirmed != false) {
tokenController.state = sessionUser.token!; <-- you are updating a dependencie of your actual AuthNotifier object
}
await dataStore.writeUserProfile(sessionUser); <-- during the await a new object is created and the actual instance is disposed so this line will throw
This question already has answers here:
What is a NoSuchMethod error and how do I fix it?
(2 answers)
Closed 2 years ago.
Good,
I have a problem with my application, since it generates an error when pressing the add to cart button, it generates an error and it is not added in firebase, I already checked that the variables have their name correctly, however I cannot find how solve this error, I appreciate all the help you can give me to solve this error!
void checkItemInCart(String shortInfoAsID, BuildContext context)
{
EcommerceApp.sharedPreferences.getStringList(EcommerceApp.userCartList).contains(shortInfoAsID)
? Fluttertoast.showToast(msg: "El artículo ya existe en el carrito")
: addItemToCart(shortInfoAsID, context);
}
addItemToCart(String shortInfoAsID, BuildContext context) {
List tempCartList = EcommerceApp.sharedPreferences.getStringList(EcommerceApp.userCartList);
tempCartList.add(shortInfoAsID);
EcommerceApp.firestore.collection(EcommerceApp.collectionUser)
.document(EcommerceApp.sharedPreferences.getString(EcommerceApp.userUID))
.updateData({
EcommerceApp.userCartList: tempCartList,
}).then((v){
Fluttertoast.showToast(msg: "Artículo añadido al carrito");
EcommerceApp.sharedPreferences.setStringList(EcommerceApp.userCartList, tempCartList);
Provider.of<CartItemCounter>(context, listen: false).displayResult();
});
}
The following NoSuchMethodError was thrown while handling a gesture:
The method 'collection' was called on null.
Receiver: null
Tried calling: collection("users")
When the exception was thrown, this was the stack:
0 Object.noSuchMethod (dart:core-patch/object_patch.dart:51:5)
1 addItemToCart (package:e_shop/Store/storehome.dart:283:26)
2 checkItemInCart (package:e_shop/Store/storehome.dart:276:9)
3 sourceInfo.<anonymous closure> (package:e_shop/Store/storehome.dart:246:27)
4 _InkResponseState._handleTap (package:flutter/src/material/ink_well.dart:993:19)
...
Handler: "onTap"
Recognizer: TapGestureRecognizer#696c2
debugOwner: GestureDetector
state: ready
won arena
finalPosition: Offset(338.5, 338.3)
finalLocalPosition: Offset(32.5, 27.8)
button: 1
sent tap down
====================================================================================================
Declare this:
List tempCartList = List<>();
Then do this :
void checkItemInCart(String shortInfoAsID, BuildContext context)
{
EcommerceApp.sharedPreferences.getStringList(EcommerceApp.userCartList).contains(shortInfoAsID)
? Fluttertoast.showToast(msg: "El artículo ya existe en el carrito")
: addItemToCart(shortInfoAsID, context);
}
addItemToCart(String shortInfoAsID, BuildContext context) {
tempCartList = EcommerceApp.sharedPreferences.getStringList(EcommerceApp.userCartList);
tempCartList.add(shortInfoAsID);
EcommerceApp.firestore.collection(EcommerceApp.collectionUser)
.document(EcommerceApp.sharedPreferences.getString(EcommerceApp.userUID))
.updateData({
EcommerceApp.userCartList: tempCartList,
}).then((v){
Fluttertoast.showToast(msg: "Artículo añadido al carrito");
EcommerceApp.sharedPreferences.setStringList(EcommerceApp.userCartList, tempCartList);
Provider.of<CartItemCounter>(context, listen: false).displayResult();
});
}
I am trying to generate a response from my chatbot(using dialogflow)
void response(query) async {
AuthGoogle authGoogle = await AuthGoogle(
fileJson: "Assets/amigo-pyhyyy-e2d1db5e1ee9.json").build();
Dialogflow dialogflow = await Dialogflow(
authGoogle: authGoogle, language: Language.english);
AIResponse aiResponse = await dialogflow.detectIntent(query);
setState(() {
messages.insert(0, {"data": 0,
"message": aiResponse.getListMessage()[0]["text"]["text"][0].tostring()
});
});
I get this error:
E/flutter ( 8166): [ERROR:flutter/lib/ui/ui_dart_state.cc(157)] Unhandled Exception: NoSuchMethodError: Class 'String' has no instance method 'tostring'.
I tried adding dependencies in the pubspec.yaml:
dependencies:
to_string: ^1.2.1
dev_dependencies:
to_string_generator: ^1.2.1
but instead of getting a reply from the bot on the app, I am still getting a reply on my console.
Please have a look.
OKAYYYYY! I did change all of the instances to .toString() , instead of .tostring() (That was so stupid of me...- __________-)
But now I have an error:
════════ Exception caught by widgets library ═══════════════════════════════════════════════════════
The following assertion was thrown building:
type 'String' is not a subtype of type 'Widget'
Looking at the error message, aiResponse.getListMessage()[0]["text"]["text"][0] already returns a String value, so you can remove tostring() Lik Almasfiza already mentioned, normally it's toString() with a capital S, but should not be needed to convert a String to a String.
I'm trying to athenticate using APIs from a flutter app but i get these errors everytime i click Login Button
final resp = await http.post("http://192.168.73.5/myserv/login.php", body: {
"login": "login",
"apid": "re0b53fd92d4b1593db1880az322d66ea9d4",
"email": _email,
"pass": _password,
});
var __data =json.decode(resp.body);
if (__data.length == 0) {
final snackbar = SnackBar(
content: Text('Server error'),
);
scaffoldKey.currentState.showSnackBar(snackbar);
} else if (__data[0]['resp'] == 'error') {
final snackbar = SnackBar(
content: Text('Password or email is incorrect!'),
);
scaffoldKey.currentState.showSnackBar(snackbar);
} else if (__data[0]['resp'] == 'sucess') {
final snackbar = SnackBar(
content: Text('You are logged in'),
);
scaffoldKey.currentState.showSnackBar(snackbar);
Navigator.of(context)
.pushReplacement(MaterialPageRoute(builder: (context) => HomeApp()));
}
}
══╡ EXCEPTION CAUGHT BY WIDGETS LIBRARY ╞═══════════════════════════════════════════════════════════
I/flutter (29517): The following NoSuchMethodError was thrown while finalizing the widget tree:
I/flutter (29517): The method 'cancel' was called on null.
I/flutter (29517): Receiver: null
I/flutter (29517): Tried calling: cancel()
I/flutter (29517): When the exception was thrown, this was the stack:
My suggestion would be to take a look to your dispose method. There you might notice a statement calling a cancel method on something that was never initiated or used, only declared. In my case I got this error because at the disposed method I was trying to cancel a subscription to a Firebase service that I had not used. I never attached a listener to it, therefore when trying to cancel it, Flutter complained saying "the method cancel was called on null". I deleted the unnecessary line at dispose method and the error resolved. Hope the explanation helps somebody.