fix: Fixed Nynorska language

Author: mateusz-bak

lib/core/constants/locale.dart

@@ -26,7 +26,7 @@ final supportedLocales = [
   AppLanguage('മലയാളം', const Locale('ml')),
   AppLanguage('Nederlands', const Locale('nl', 'NL')),
   AppLanguage('Norsk', const Locale('no', 'NO')),
-  AppLanguage('Nynorsk', const Locale('nn', 'NO')),
+  AppLanguage('Nynorsk', const Locale('nn')),
   AppLanguage('ଓଡ଼ିଆ', const Locale('or', 'IN')),
   AppLanguage('ਪੰਜਾਬੀ', const Locale('pa')),
   AppLanguage('polski', const Locale('pl', 'PL')),

lib/core/helpers/locale_delegates/locale_delegate_nynorsk.dart

@@ -0,0 +1,53 @@
+import 'package:flutter/cupertino.dart';
+import 'package:flutter/foundation.dart';
+import 'package:flutter/material.dart';
+
+import 'package:flutter_localizations/flutter_localizations.dart';
+
+class NynorskMaterialLocalizationsDelegate
+    extends LocalizationsDelegate<MaterialLocalizations> {
+  const NynorskMaterialLocalizationsDelegate();
+
+  @override
+  bool isSupported(Locale locale) {
+    return locale == const Locale('nn');
+  }
+
+  @override
+  Future<MaterialLocalizations> load(Locale locale) async {
+    assert(locale == const Locale('nn'));
+
+    return SynchronousFuture<MaterialLocalizations>(
+      await GlobalMaterialLocalizations.delegate.load(
+        const Locale('no', 'NO'),
+      ),
+    );
+  }
+
+  @override
+  bool shouldReload(NynorskMaterialLocalizationsDelegate old) => false;
+}
+
+class NynorskCupertinoLocalizationsDelegate
+    extends LocalizationsDelegate<CupertinoLocalizations> {
+  const NynorskCupertinoLocalizationsDelegate();
+
+  @override
+  bool isSupported(Locale locale) {
+    return locale == const Locale('nn');
+  }
+
+  @override
+  Future<CupertinoLocalizations> load(Locale locale) async {
+    assert(locale == const Locale('nn'));
+
+    return SynchronousFuture<CupertinoLocalizations>(
+      await GlobalCupertinoLocalizations.delegate.load(
+        const Locale('no', 'NO'),
+      ),
+    );
+  }
+
+  @override
+  bool shouldReload(NynorskCupertinoLocalizationsDelegate old) => false;
+}

lib/core/helpers/locale_delegates/locale_delegates.dart

@@ -0,0 +1 @@
+export 'locale_delegate_nynorsk.dart';

lib/main.dart

@@ -11,6 +11,7 @@ import 'package:hydrated_bloc/hydrated_bloc.dart';
 import 'package:intl/date_symbol_data_local.dart';
 import 'package:openreads/core/constants/constants.dart';
 import 'package:openreads/core/constants/locale.dart';
+import 'package:openreads/core/helpers/locale_delegates/locale_delegates.dart';
 import 'package:openreads/core/helpers/old_android_http_overrides.dart';
 import 'package:openreads/logic/bloc/challenge_bloc/challenge_bloc.dart';
 import 'package:openreads/logic/bloc/display_bloc/display_bloc.dart';
@@ -165,6 +166,12 @@ class _OpenreadsAppState extends State<OpenreadsApp>
   Widget build(BuildContext context) {
     _initDateFormat(context);
 
+    final localizationsDelegates = [
+      ...context.localizationDelegates,
+      const NynorskMaterialLocalizationsDelegate(),
+      const NynorskCupertinoLocalizationsDelegate(),
+    ];
+
     return DynamicColorBuilder(
         builder: (ColorScheme? lightDynamic, ColorScheme? darkDynamic) {
       if (widget.themeState.amoledDark) {
@@ -230,7 +237,7 @@ class _OpenreadsAppState extends State<OpenreadsApp>
           home: welcomeMode
               ? WelcomeScreen(themeData: Theme.of(context))
               : const BooksScreen(),
-          localizationsDelegates: context.localizationDelegates,
+          localizationsDelegates: localizationsDelegates,
           supportedLocales: context.supportedLocales,
           locale: context.locale,
         ),
@@ -259,5 +266,13 @@ Future _initDateFormat(BuildContext context) async {
   await initializeDateFormatting();
 
   // ignore: use_build_context_synchronously
-  dateFormat = DateFormat.yMMMMd(context.locale.toString());
+  String locale = context.locale.toString();
+
+  // Fallback to another locale as nn-NO is not supported by Flutter
+  if (locale == const Locale('nn').toString()) {
+    locale = const Locale('no', 'NO').toString();
+  }
+
+  // ignore: use_build_context_synchronously
+  dateFormat = DateFormat.yMMMMd(locale);
 }

pubspec.lock

@@ -471,7 +471,7 @@ packages:
     source: hosted
     version: "4.0.0"
   flutter_localizations:
-    dependency: transitive
+    dependency: "direct main"
     description: flutter
     source: sdk
     version: "0.0.0"

pubspec.yaml

@@ -61,6 +61,8 @@ dependencies:
   dotted_border: ^2.1.0
   flutter_cache_manager: ^3.3.1
   modal_bottom_sheet: ^3.0.0
+  flutter_localizations:
+    sdk: flutter
 
 dev_dependencies:
   flutter_test: