flutter - Call provider function during build

Question

Basically, i need to somehow call provider function while page is loading. If provider class(simplify) look like this:

class UserDataProvider extends ChangeNotifier {

  String userName;
 
  setUserName(i) {
    userName = i;
    notifyListeners();
  }

}

and, UI look something like this:

import 'package:flutter/material.dart';
import 'package:provider/provider.dart';
import 'package:we_need/providers/user_data_provider.dart';

class BusinessName extends StatelessWidget {
  const BusinessName({Key key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    final userDataProvider =
        Provider.of<UserDataProvider>(context, listen: false);
    userDataProvider.setUserName('John Doe');
    return Container(
      child: Text(userDataProvider.userName),
    );
  }
}

It obviosly give me error - setState() or markNeedsBuild() called during build.

So, how can i run provider's function before build? (i've tried stateful widget with future.delayed - no sucess).

question from:https://stackoverflow.com/questions/65904338/call-provider-function-during-build

Answer 1

Waitting for answers