A widget for switching the locale of your application.



This is NOT a localization package, it is just a few useful widgets that extend
functionality of localization systems, such as: intl,
easy_localization, etc...

Note: This package is already small, but if you still want to further reduce its size,
you can use locale_switcher_dev package,
which allow you to control what flags are included (or none)
and which packages it depend on (or none).



  1. Wrap MaterialApp or CupertinoApp
    with LocaleManager
    (example for intl package):
Widget build(BuildContext context, WidgetRef ref) {
  return LocaleManager(
      child: MaterialApp(
          locale: LocaleSwitcher.localeBestMatch,
          supportedLocales: AppLocalizations.supportedLocales,
          localizationsDelegates: AppLocalizations.localizationsDelegates,
  1. Add LocaleSwitcher
    widget anywhere into your app.


Note: localization should be set up before you start to use this package,
if there some problems - please, check next section and/or documentation of localization system you use,
before reporting bug.

For intl package

Check that intl package is set up correctly,
here is an example setup of pubspec.yaml
and l10n.yaml

For easy_localization package

Check that easy_localization package is set up correctly,
here is an example setup of pubspec.yaml.

Note: if you use locale_switcher_dev
you don't need to
use LocaleSwitcher.setLocaleCallBack.

But for locale_switcher it is required
setLocaleCallBack: (context) => context.setLocale(LocaleSwitcher.localeBestMatch)

For slang package

Check that slang package is set up correctly,
here is an example setup of pubspec.yaml.

Currently it didn't work without: LocaleSwitcher.setLocaleCallBack,
see example how to setup it - here


Online Example here

With intl package:

With easy_localization package:

With slang package:


  • [ ] Improve rectangle flags!
  • [ ] Allow emoji as flags


- How to change order of languages?

Languages are shown in the same order as they listed in l10n.yaml,
or dynamically
via LocaleSwitcher.custom.

- How to change flag of language?

Use LocaleManager.reassign
parameter like this:

  reassign: {'en': ['GB', 'English', <Your_icon_optional>]}
  // (first two options are required, third is optional)
  // first option is the code of country which flag you want to use

- How to use localization outside of MaterialApp(or CupertinoApp)?

Here is a useful example, although it is not depend on this package:

import 'package:flutter_gen/gen_l10n/app_localizations.dart';

/// Access localization through locale
extension LocaleWithDelegate on Locale {
  /// Get class with translation strings for this locale.
  AppLocalizations get tr => lookupAppLocalizations(this);

// or