Language not updated for some widgets

[erperejildo]

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[bot]]

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.

[erperejildo]

still having the same problem

[bratan]

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

[erperejildo]

@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

[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'),

[erperejildo]

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