flutter - How to invoke a rebuild of a stateless widget?

Question

Context

I have two stateless widgets (pages): HomePage and DetailsPage. Obviously the application starts and launches the HomePage. There is a button the user can press to navigate to the DetailsPage with a Navigator.pop() button to navigate back to the HomePage.

I know when the DetailsPage is done being used with the .whenComplete() method. It is at this point I want to rebuild the HomePage widget.

Code

This is the minimum reproduction of my behavior.

main.dart

import 'package:example/home.dart';
import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(home: HomePage());
  }
}

home.dart

import 'package:example/details.dart';
import 'package:flutter/material.dart';

class HomePage extends StatelessWidget {
  static const name = 'Home Page';
  const HomePage() : super();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: MaterialButton(
          color: Colors.blue,
          textColor: Colors.white,
          child: Text(name),
          onPressed: () {
            Navigator.push(
              context,
              MaterialPageRoute(builder: DetailsPage.builder),
            ).whenComplete(() => print('Rebuild now.'));
          },
        ),
      ),
    );
  }
}

details.dart

import 'package:flutter/material.dart';

class DetailsPage extends StatelessWidget {
  static const name = 'Details Page';
  static WidgetBuilder builder = (BuildContext _) => DetailsPage();
  const DetailsPage();

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: [
            Text(name),
            MaterialButton(
              color: Colors.blue,
              textColor: Colors.white,
              child: Text('Go Back'),
              onPressed: () => Navigator.pop(context),
            ),
          ],
        ),
      ),
    );
  }
}

Question

How can I invoke a rebuild of this stateless widget (HomePage) at the .whenComplete() method callback?

question from:https://stackoverflow.com/questions/65847494/how-to-invoke-a-rebuild-of-a-stateless-widget

Answer 1

Waitting for answers