import 'package:flutter/cupertino.dart';
import 'package:flutter/material.dart';

void main() {
  runApp(const MyApp());
}

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

  @override
  Widget build(BuildContext context) {
    return const CupertinoApp(
        home: MyHomePage(title: "Home", backButtonText: ""));
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage(
      {super.key, required this.title, required this.backButtonText});

  final String title;
  final String backButtonText;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  @override
  Widget build(BuildContext context) {
    return CupertinoPageScaffold(
      navigationBar: CupertinoNavigationBar(
        previousPageTitle: widget.backButtonText,
        // automaticallyImplyLeading: true,
        middle: Text(widget.title),
        trailing: const Row(
          mainAxisSize: MainAxisSize.min,
          children: [],
        ),
      ),
      child: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            ElevatedButton(
              child: const Text("Go"),
              onPressed: () {
                Navigator.of(context).push(CupertinoPageRoute(
                    builder: (c) => MyHomePage(
                          title: "Oh dear",
                          backButtonText: "${widget.backButtonText}Back",
                        )));
              },
            ),
          ],
        ),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }
}