Flutter - Error: The getter X isn't defined for the class

Question

I have a class TripController that contains a private field _updatedAccount. I created a getter in order to get from outside.

class TripController {
  final String _accountId;
  final BuildContext _context;
  Account _updatedAccount;  
  Account updatedAccount() => _updatedAccount;


  TripController(this._accountId, this._context);
...
}

In another class, where I perfectly have access to the TripController class, I have the code :

onTap: () {
 TripController _tripController =
 new TripController(_account.id, context);
 _tripController.add(context);
 _account.trips  = _tripController.updatedAccount.trips;
 _account.notifyListeners();
},

And here, updatedAccount from _tripController.updatedAccount.trips is underlined in red with the message : The getter 'updatedAccount' isn't defined for the class 'TripController'

Did I misdeclared the getter ?

score 5 · Accepted Answer · answered Jul 23 '19 at 07:48

5

Okay, I finally fixed it. I don't know why, but I had to delete the code related to TripController, and ther re-write it again. I don't know why, maybe it was an Editor problem, I'm using VScode.

answered Jul 23 '19 at 07:48

user54517

2,020
5
30
47

For me it worked by reloading VS code window. To reload window: `(Cmd/ Ctrl )+Shift+P` and search for reload there should be an option called ```Developer: Reload Window``` Caution: Reloading window will kill the current running terminals / emulators / sessions – StabCode May 05 '22 at 04:13

score 3 · Answer 2 · answered Jul 23 '19 at 07:13

3

You have declared updatAccount() as a method, not as a getter. Use _tripController.updatedAccount().trips; or change the method to a getter Account get updatedAccount => _updatedAccount;

answered Jul 23 '19 at 07:13

Tidder

1,126
1
7
15

With parenthesis, the error message changes and becomes `The method 'updatedAccount' isn't defined for the class 'TripController'.` – user54517 Jul 23 '19 at 07:15
Do you have another class called 'TripController'? – Tidder Jul 23 '19 at 07:27
No, I don't. What I don't understand is that I have access to all the other methods, but not this one. It doesn't recognize it. EDIT : actually, when I try to add another test() method, it doesn't work neither – user54517 Jul 23 '19 at 07:28
As if it didn't want to take into account the changes I do to my `TripController` class. – user54517 Jul 23 '19 at 07:34
That's weird. Have you tired to clean/rebuild your project? – Tidder Jul 23 '19 at 07:35
Yes, i did try `flutter clean` – user54517 Jul 23 '19 at 07:36
Too bad, I have no further idea. Sorry. – Tidder Jul 23 '19 at 07:43

score 2 · Answer 3 · answered Jan 01 '23 at 08:47

2

I faced this error and the problem was my IDE, not my code. This solution worked for me in Android Studio :

File -> Invalidate Catches... -> Invalidate And Restart

answered Jan 01 '23 at 08:47

Ghazal

123
2
9

score 0 · Answer 4 · answered Jul 23 '19 at 07:13

0

You are using the classic method syntax declaration, in Dart language, prefer using this kind of syntax for getters:

Account get updatedAccount => _updatedAccount;

And call it the way you did. Else you should call it like a classic method:

_tripController.updatedAccount().trips

Please follow this link for further information:

https://dart.dev/guides/language/language-tour#getters-and-setters

answered Jul 23 '19 at 07:13

Evrard-Nil Daillet

95
10

I tried to add the get, but the message is the same :/ – user54517 Jul 23 '19 at 07:17
Did you remove parenthesis aswell ? – Evrard-Nil Daillet Jul 23 '19 at 07:21

score 0 · Answer 5 · answered Mar 03 '22 at 17:56

If you want to use import 'package:flutter_svg/svg.dart'; package then you need to follow these steps.

step 1. -> Open the termial in the IDE and run this command -> flutter pub add flutter_svg

step 2. -> Then run this command -> flutter pub get

step 3. -> Now import this package -> import 'package:flutter_svg/flutter_svg.dart';

score 0 · Answer 6 · answered Jul 24 '22 at 14:13

0

Try to check the model class name you use might the same with existing name of Widget or Plugin

answered Jul 24 '22 at 14:13

Aizat Ashaari

1
1

As it’s currently written, your answer is unclear. Please [edit] to add additional details that will help others understand how this addresses the question asked. You can find more information on how to write good answers [in the help center](/help/how-to-answer). – Community Jul 27 '22 at 17:29
This does not provide an answer to the question. Once you have sufficient [reputation](https://stackoverflow.com/help/whats-reputation) you will be able to [comment on any post](https://stackoverflow.com/help/privileges/comment); instead, [provide answers that don't require clarification from the asker](https://meta.stackexchange.com/questions/214173/why-do-i-need-50-reputation-to-comment-what-can-i-do-instead). - [From Review](/review/late-answers/32322487) – MohanKumar Jul 29 '22 at 08:05

score 0 · Answer 7 · answered Oct 16 '22 at 14:07

Check your imported libraries on the top of your file where the problem is. In my case, Android Studio auto-imported an object from the core Flutter library with the same name as the model I've defined on my own.

I just deleted the import and then imported my own object from my_models.dart file.

score 0 · Answer 8 · answered Mar 15 '23 at 23:23

0

The first thing to do when getting an exception in Flutter - is to restart IDE.

answered Mar 15 '23 at 23:23

Yuriy N.

4,936
2
38
31

Flutter - Error: The getter X isn't defined for the class

8 Answers8

Linked