super_cupertino_navigation_bar 1.0.0-beta+1

This is most desired plugin of Cupertino Navigation Bar With Search Field and Avatar

example/lib/main.dart

import 'package:example/root_screen.dart';
import 'package:flutter/cupertino.dart';
import 'package:flutter_localizations/flutter_localizations.dart';

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

class MainApp extends StatefulWidget {
  const MainApp({super.key});

  @override
  State<MainApp> createState() => _MainAppState();
}

class _MainAppState extends State<MainApp> {
  @override
  Widget build(BuildContext context) {
    return CupertinoApp(
      debugShowCheckedModeBanner: false,
      theme: const CupertinoThemeData(brightness: Brightness.dark),
      localizationsDelegates: const <LocalizationsDelegate<Object>>[
        // ... app-specific localization delegate(s) here
        GlobalMaterialLocalizations.delegate,
        GlobalWidgetsLocalizations.delegate,
      ],
      supportedLocales: const <Locale>[
        Locale('en', 'US'), // English
        Locale('he', 'IL'), // Hebrew
        // ... other locales the app supports
      ],
      routes: {
        '/': (context) => const RootScreen(),
      },
    );
  }
}