Navegación con named routes en Flutter: ejercicio resuelto

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import 'package:flutter/material.dart';

void main() {
  runApp(MaterialApp(
    initialRoute: '/',
    routes: {
      '/': (_) => const HomePage(),
      '/detail': (_) => const DetailPage(),
    },
  ));
}

class HomePage extends StatelessWidget {
  const HomePage({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('Home')),
      body: Center(
        child: ElevatedButton(
          onPressed: () => Navigator.pushNamed(context, '/detail'),
          child: const Text('Ir a detalle'),
        ),
      ),
    );
  }
}

class DetailPage extends StatelessWidget {
  const DetailPage({super.key});

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('Detalle')),
      body: Center(
        child: ElevatedButton(
          onPressed: () => Navigator.pop(context),
          child: const Text('Volver'),
        ),
      ),
    );
  }
}