70 lines
2.0 KiB
Dart
70 lines
2.0 KiB
Dart
import 'dart:convert';
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import 'dart:ui';
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import 'package:flutter/cupertino.dart';
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import 'package:flutter/services.dart';
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class AppLocalizations {
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Locale locale;
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AppLocalizations(this.locale);
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// Helper method to keep the code in the widgets concise
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// Localizations are accessed using an InheritedWidget "of" syntax
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static AppLocalizations of(BuildContext context) {
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return Localizations.of<AppLocalizations>(context, AppLocalizations);
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}
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// Static member to have a simple access to the delegate from the MaterialApp
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static const LocalizationsDelegate<AppLocalizations> delegate =
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_AppLocalizationsDelegate();
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Map<String, String> _localizedStrings;
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setLocale(Locale locale) {
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this.locale = locale;
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}
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Future<bool> load() async {
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// Load the language JSON file from the "lang" folder
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String jsonString =
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await rootBundle.loadString('i18n/${locale.languageCode}.json');
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Map<String, dynamic> jsonMap = json.decode(jsonString);
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_localizedStrings = jsonMap.map((key, value) {
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return MapEntry(key, value.toString());
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});
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return true;
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}
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// This method will be called from every widget which needs a localized text
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String translate(String key) {
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return _localizedStrings[key];
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}
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}
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class _AppLocalizationsDelegate
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extends LocalizationsDelegate<AppLocalizations> {
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// This delegate instance will never change (it doesn't even have fields!)
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// It can provide a constant constructor.
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const _AppLocalizationsDelegate();
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@override
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bool isSupported(Locale locale) {
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// Include all of your supported language codes here
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return ['en', 'hu'].contains(locale.languageCode);
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}
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@override
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Future<AppLocalizations> load(Locale locale) async {
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// AppLocalizations class is where the JSON loading actually runs
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AppLocalizations localizations = new AppLocalizations(locale);
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await localizations.load();
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return localizations;
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}
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@override
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bool shouldReload(_AppLocalizationsDelegate old) => false;
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} |