CODEWITHSUNDEEP
dartflutter
Kevin Dev
Kevin Dev

Reputation: 231

Flutter /Dart Classes

I have implemented a class in a file user_service.dart:

class UserService { 
    Future<User> createUser(...)

 ....
}

I have tried referencing the createUser method in another class

I import the User Service class

  import 'user_service.dart';

and try 

  UserService userService;
  print(userService.toString());

  UserService.createUser(....);

It compiles fine.

A am getting an error: NoSuchMethodError: The method 'createUser' was called on null.

Any ideas?

Help appreciated.

Upvotes: 0

Views: 320

Answers (1)

Marcos Boaventura
Marcos Boaventura

Reputation: 4741

In your case you need firstly create a new instance of you UserService class.

UserService _instance = UserService(); // here you are creating a new instance with a default constructor

//now you can call your UserService methods
_instance.createUser();

Upvotes: 2

Related Questions