easy_localization 2.1.0-dev.5

Easy and Fast internationalizing and localization your Flutter Apps, this package simplify the internationalizing process using Json file.

Easy localization

Easy and Fast internationalizing your Flutter Apps, this package simplify the internationalizing process using Json file

Why easy_localization

• ✅ simplifying and making easy the internationalizing process in Flutter.
• ✅ Using JSON Files .
• ✅ Error widget
• ✅ Based on Bloc Archi
• ✅ Load locale from remote or backend.
• ✅ Automatically saving App state (save/restor the selected locale).
• ✅ Supports plural
• ✅ Supports gender
• ✅ Supports Flutter extension.
• ✅ Supports change locale dynamically .
• ✅ Supports for RTL locales
• ✅ Supports for nesting
• ✅ Customization AssetLoader localizations
• ✅ Support for context
• ✅ Testable and easy maintenence

Changelog

[2.1.0]

• Added Error widget.
• fixed many issues.
• Based on Bloc.

[2.0.2]

• fixed many issues
• optimized and clean code more stability

[2.0.1]

• Added change locale dynamically saveLocale default value true
• fixed many issues

Getting Started

Configuration

Add this to your package's pubspec.yaml file:

dependencies:
  # stable version install from https://pub.dev/packages
  easy_localization: <last_version>

  # Dev version install from git REPO
  easy_localization:
    git: https://github.com/aissat/easy_localization.git

Load translations from local assets

You must create a folder in your project's root: the path. Some examples:

/assets/"langs" , "i18n", "locale" or anyname ...

/resources/"langs" , "i18n", "locale" or anyname ...

Inside this folder, must put the json files containing the translated keys :

path/${languageCode}-${countryCode}.json

example:

• en.json to en-US.json
• ar.json to ar-DZ.json
• zh.json to zh-CN.json
• zh.json to zh-TW.json

must declare the subtree in your pubspec.yaml as assets:

flutter:
  assets:
    - {`path`/{languageCode}-{countryCode}.json}

The next step :

import 'dart:developer';

import 'package:example/lang_view.dart';
import 'package:example/my_flutter_app_icons.dart';
import 'package:flutter/material.dart';
import 'package:flutter_localizations/flutter_localizations.dart';
import 'package:easy_localization/easy_localization.dart';

void main(){
  runApp(EasyLocalization(
    child: MyApp(),
    supportedLocales: [Locale('en', 'US'), Locale('ar', 'DZ')],
    path: 'resources/langs',
    // fallbackLocale: Locale('en', 'US'),
    // useOnlyLangCode: true,
    // optional assetLoader default used is RootBundleAssetLoader which uses flutter's assetloader
    // assetLoader: RootBundleAssetLoader()
    // assetLoader: NetworkAssetLoader()
    // assetLoader: TestsAssetLoader()
    // assetLoader: FileAssetLoader()
    // assetLoader: StringAssetLoader()
  ));
}

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      localizationsDelegates: [
        GlobalMaterialLocalizations.delegate,
        GlobalWidgetsLocalizations.delegate,
        EasyLocalization.of(context).delegate,
      ],
      supportedLocales: EasyLocalization.of(context).supportedLocales,
      locale: EasyLocalization.of(context).locale,
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),
      home: MyHomePage(title: 'Easy localization'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  MyHomePage({Key key, this.title}) : super(key: key);

  final String title;

  @override
  _MyHomePageState createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  int counter = 0;
  bool _gender = true;

  incrementCounter() {
    setState(() {
      counter++;
    });
  }

  switchGender(bool val) {
    setState(() {
      _gender = val;
    });
  }

  @override
  Widget build(BuildContext context) {
    log(tr("title"), name: this.toString() );
    return Scaffold(
      appBar: AppBar(
        title: Text("title").tr(context: context),
        actions: <Widget>[
          FlatButton(
            child: Icon(Icons.language),
            onPressed: () {
              Navigator.push(
                context,
                MaterialPageRoute(
                    builder: (_) => LanguageView(), fullscreenDialog: true),
              );
            },
          ),
        ],
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            Spacer(
              flex: 1,
            ),
            Text(
              'switch.with_arg',
              style: TextStyle(
                  color: Colors.grey.shade600,
                  fontSize: 19,
                  fontWeight: FontWeight.bold),
            ).tr(args: ["aissat"], gender: _gender ? "female" : "male"),
            Text(
              tr('switch', gender: _gender ? "female" : "male"),
              style: TextStyle(
                  color: Colors.grey.shade600,
                  fontSize: 15,
                  fontWeight: FontWeight.bold),
            ),
            Row(
              mainAxisAlignment: MainAxisAlignment.center,
              children: <Widget>[
                Icon(MyFlutterApp.male_1),
                Switch(value: _gender, onChanged: switchGender),
                Icon(MyFlutterApp.female_1),
              ],
            ),
            Spacer(
              flex: 1,
            ),
            Text('msg').tr(args: ['aissat', 'Flutter']),
            Text('clicked').plural(counter),
            FlatButton(
              onPressed: () {
                incrementCounter();
              },
              child: Text('clickMe').tr(),
            ),
            SizedBox(
              height: 15,
            ),
            Text(
                plural('amount', counter,
                    format: NumberFormat.currency(
                        locale: Intl.defaultLocale,
                        symbol: "€")),
                style: TextStyle(
                    color: Colors.grey.shade900,
                    fontSize: 18,
                    fontWeight: FontWeight.bold)),
            SizedBox(
              height: 20,
            ),
            Text('profile.reset_password.title').tr(),
            Spacer(
              flex: 2,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: incrementCounter,
        child: Text('+1'),
      ),
    );
  }
}

to change Locale

EasyLocalization.of(context).locale = locale;

Load translations from Custom AssetLoader

example from Csv file:

//
// load example/resources/langs/langs.csv
//
class CsvAssetLoader extends AssetLoader {
  @override
  Future<Map<String, dynamic>> load(String path, Locale locale) async {
    final csv = await rootBundle.loadString(path);
    final converter = CsvToListConverter();
    final val = converter.convert(csv);
    return _mappingData(locale, val);
  }

  Map<String, String> _mappingData(Locale locale, List<List<dynamic>> table) {
    var languageIndex = table.first.indexOf(locale.languageCode);
    var translations = <String, String>{};
    for (var i = 1; i < table.length; i++) {
      translations.addAll({table[i][0]: table[i][languageIndex]});
    }
    return translations;
  }
}

The next step :

...
void main(){
  runApp(EasyLocalization(
    child: MyApp(),
    supportedLocales: [Locale('en', 'US'), Locale('ar', 'DZ')],
    path: 'resources/langs/langs.csv',
    assetLoader: CsvAssetLoader()
    // fallbackLocale: Locale('en', 'US'),
    // useOnlyLangCode: true,
    // optional assetLoader default used is RootBundleAssetLoader which uses flutter's assetloader
    // assetLoader: RootBundleAssetLoader()
    // assetLoader: TestsAssetLoader()
    // assetLoader: FileAssetLoader()
    // assetLoader: StringAssetLoader()
  ));
}
...

Screenshots

Arbic RTL	English LTR

Русский	Dutch

Error widget	Language widget

Donations

---

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Contributors thanks