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