76 lines
2.1 KiB
Dart
76 lines
2.1 KiB
Dart
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//For localization of app
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import 'dart:convert';
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import 'package:ebroker/utils/hive_utils.dart';
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import 'package:flutter/material.dart';
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import 'package:flutter/services.dart';
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class AppLocalization {
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final Locale locale;
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//it will hold key of text and it's values in given language
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late Map<String, String> _localizedValues;
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AppLocalization(this.locale);
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//to access app-localization instance any where in app using context
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static AppLocalization? of(BuildContext context) {
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return Localizations.of(context, AppLocalization);
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}
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//to load json(language) from assets
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Future loadJson() async {
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// String languageJsonName = locale.countryCode == null
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// ? locale.languageCode
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// : "${locale.languageCode}-${locale.countryCode}";
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String jsonStringValues =
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await rootBundle.loadString('assets/languages/template.json');
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// value from root-bundle will be encoded string
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Map<String, dynamic> mappedJson = {};
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if (HiveUtils.getLanguage() == null ||
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HiveUtils.getLanguage()['data'] == null) {
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mappedJson = json.decode(jsonStringValues);
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} else {
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mappedJson = Map<String, dynamic>.from(HiveUtils.getLanguage()['data']);
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}
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_localizedValues =
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mappedJson.map((key, value) => MapEntry(key, value.toString()));
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}
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//to get translated value of given title/key
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String? getTranslatedValues(String? key) {
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return _localizedValues[key!];
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}
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//need to declare custom delegate
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static const LocalizationsDelegate<AppLocalization> delegate =
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_AppLocalizationDelegate();
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}
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//Custom app delegate
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class _AppLocalizationDelegate extends LocalizationsDelegate<AppLocalization> {
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const _AppLocalizationDelegate();
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//providing all supported languages
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@override
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bool isSupported(Locale locale) {
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//
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return true;
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}
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//load languageCode.json files
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@override
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Future<AppLocalization> load(Locale locale) async {
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AppLocalization localization = AppLocalization(locale);
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await localization.loadJson();
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return localization;
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}
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@override
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bool shouldReload(LocalizationsDelegate<AppLocalization> old) {
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return true;
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}
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}
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