---
title: "Why Flutter returns null for AppLocalizations.of(context)?"
description: "If you're encountering a null value when attempting to access AppLocalizations.of(context) in your Flutter app, it's likely due to incorrect localization configuration. This could be caused by a failure to register AppLocalizations.delegate in the localizationsDelegates of your MaterialApp widget, or by trying to access localization messages before they are ready. Read more to find the solution."
category: flutter
date: 2023-03-29
updated: 2026-10-09
canonical: https://localizely.com/i18n-questions/flutter/why-flutter-returns-null-for-applocalizations-of-context/
---

# Why Flutter returns null for AppLocalizations.of(context)?

If you're trying to access `AppLocalizations.of(context)` in your Flutter app and getting a `null` value, it's likely because your localization configuration is incorrect. This could be because you didn't register `AppLocalizations.delegate` in the `localizationsDelegates` of your `MaterialApp` widget or something similar.

Even if you've configured everything correctly, you might still get a `null` value when trying to access localization messages in the `MaterialApp` widget. This happens when the localization is not ready yet, which is often the case when trying to localize the `title` property. To fix this, you can use the `onGenerateTitle` property of the `MaterialApp` widget instead.

If you're defining a page widget directly within the `MaterialApp` widget and getting a `null` value when trying to access `AppLocalizations.of(context)`, you can wrap your page widget with the `Builder` widget. This introduces an additional `BuildContext` element that allows you to access the localization messages. The `Builder` widget is an alternative to defining a `StatelessWidget` subclass and is a quick and easy solution that can solve the problem in most cases.

```dart
import 'package:flutter/material.dart';
import 'l10n/app_localizations.dart';

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

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      localizationsDelegates: AppLocalizations.localizationsDelegates,
      supportedLocales: AppLocalizations.supportedLocales,

      // title: AppLocalizations.of(context)!.appTitle,
      onGenerateTitle: (context) => AppLocalizations.of(context)!.appTitle,
      
      // home: Scaffold(
      //   appBar: AppBar(
      //     title: Text(AppLocalizations.of(context)!.pageHomeTitle),
      //   ),
      //   body: Column(
      //     children: <Widget>[
      //       Text(AppLocalizations.of(context)!.pageHomeWelcome)
      //     ],
      //   ),
      // ),
      home: Builder(
        builder: (context) => Scaffold(
          appBar: AppBar(
            title: Text(AppLocalizations.of(context)!.pageHomeTitle),
          ),
          body: Column(
            children: <Widget>[
              Text(AppLocalizations.of(context)!.pageHomeWelcome)
            ],
          ),
        ),
      ),
    );
  }
}
```

Source: https://localizely.com/i18n-questions/flutter/why-flutter-returns-null-for-applocalizations-of-context/