directionality_override.dart

import 'package:flutter/material.dart';

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      builder: (context, child) => Directionality(
        textDirection: Localizations.localeOf(context).languageCode == 'ar' //
            ? TextDirection.rtl
            : TextDirection.ltr,
        child: child!,
      ),
      home: const Page(),
      locale: const Locale('ar'),
      supportedLocales: const [
        Locale('de'),
        Locale('ar'),
      ],
    );
  }
}

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

  @override
  Widget build(BuildContext context) {
    return const Scaffold(
      body: Center(
        child: Row(
          mainAxisSize: MainAxisSize.min,
          children: [
            Icon(Icons.forward),
            Text('Hi there!'),
          ],
        ),
      ),
    );
  }
}