Language not updated for some widgets

[Daniel]

Main page and back icon description (this is automatic so no changes from my side) are still not updated when the rest of the app is. I need to restart the app to see the new language.

Video of the issue:
https://www.youtube.com/shorts/fFOS5KXPHo8

Language change function:

onChanged: (newLang) async {
                    final loading = new Loading();
                    await loading.load(
                      context,
                      translate('options_page.updating_language'),
                    );
                    // update dropdown language
                    _language = newLang;
                    // update app language
                    await changeLocale(context,
                        newLang);
                    Locale(newLang!, '');
                    // save language
                    _options["language"] = newLang;
                    await prefs.setString('options', json.encode(_options));
                    Provider.of<Game>(context, listen: false)
                        .initGame(context, newLang, true);
                    loading.cancel(context);
                  },

More info:

  final delegate = await LocalizationDelegate.create(
       fallbackLocale: 'en',
       supportedLocales: languages,
     );
   
     runZonedGuarded(() {
       runApp(
         LocalizedApp(
           delegate,
           MyApp(),
         ),
       );
     }, FirebaseCrashlytics.instance.recordError);
   ...
   MaterialApp(
           locale: getSavedLanguage(),
           supportedLocales: localizationDelegate.supportedLocales,
           localizationsDelegates: [
             GlobalMaterialLocalizations.delegate,
             GlobalWidgetsLocalizations.delegate,
             GlobalCupertinoLocalizations.delegate,
             localizationDelegate
           ],
   ...
   getSavedLanguage() {
     var options = prefs.get('options');
     // first time we initiate the app there are no default options yet so we create them
     if (options == null) {
       options = json.encode({
         'language': ui.window.locale.languageCode, // default phone language
         'sounds': true,
         'fastMode': false
       });
       prefs.setString('options', options.toString());
     }
     final Map optionsMap = json.decode(options.toString());
     return Locale(optionsMap['language'], '');
   }

and:

flutter_translate: ^4.0.2

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[Daniel]

still having the same problem

[Florin Bratan]

@erperejildo - can you reproduce this issue in a sample project? I will take a look.

[Daniel]

@erperejildo - can you reproduce this issue in a sample project? I will take a look.

https://zapp.run/edit/flutter-z7ec06l27ed0?entry=lib/main.dart&file=lib/options.dart

[Florin Bratan]

@erperejildo - can you reproduce this issue in a sample project? I will take a look.

https://zapp.run/edit/flutter-z7ec06l27ed0?entry=lib/main.dart&file=lib/options.dart

Here is a working example and you can find the fixes below:

https://zapp.run/edit/flutter-zwek06ldwel0?entry=lib/main.dart&file=lib/main.dart

1. You need to wrap the MaterialApp into a LocalizationProvider:

 return LocalizationProvider(
      state: LocalizationProvider.of(context).state,
      child:  MaterialApp(
        title: 'Flutter App!!',
        locale: localizationDelegate.currentLocale,

2. MyHomePage should not be a constant

home: MyHomePage(title: 'Flutter Example App'),

instead of

home: const MyHomePage(title: 'Flutter Example App'),

[Daniel]

https://zapp.run/edit/flutter-z7ec06l27ed0?entry=lib/main.dart&file=assets/i18n/en.json:59-105

@erperejildo - can you reproduce this issue in a sample project? I will take a look.

https://zapp.run/edit/flutter-z7ec06l27ed0?entry=lib/main.dart&file=lib/options.dart

Here is a working example and you can find the fixes below:

https://zapp.run/edit/flutter-zwek06ldwel0?entry=lib/main.dart&file=lib/main.dart

1. You need to wrap the MaterialApp into a LocalizationProvider:

 return LocalizationProvider(
      state: LocalizationProvider.of(context).state,
      child:  MaterialApp(
        title: 'Flutter App!!',
        locale: localizationDelegate.currentLocale,

2. MyHomePage should not be a constant

home: MyHomePage(title: 'Flutter Example App'),

instead of

home: const MyHomePage(title: 'Flutter Example App'),

Forgot to wrap it in the example but what I had in my code was the const since it was suggesting me to add it. Thanks, working now