easy_localization

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

Why easy_localization?

simplify the internationalizing process in Flutter .

Internationalization by Using JSON Files .

Changelog

1.2.0

  • Added property resolver for nested key translations
  • return translate key if the element or path not exist
{
  "title": "Hello",
  "msg": "Hello {} in the {} world ",
  "clickMe": "Click me",
  "profile": {
    "reset_password": {
      "title": "Reset Password",
      "username": "Username",
      "password": "password"
    }
  },
  "clicked": {
    "zero": "You clicked {} times!",
    "one": "You clicked {} time!",
    "other": "You clicked {} times!"
  }
}

new Text(
  AppLocalizations.of(context).tr('profile.reset_password.title'),
 ),

1.0.4

  • Added Support country codes

1.0.3

  • Updated tr() function added Multi Argument

1.0.2

  • Added string pluralisation .
  • Added Argument to tr() function.

Getting Started

Configuration

add


easy_localization: <last_version>

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

void main() => runApp(EasyLocalization(child: MyApp()));

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    var data = EasyLocalizationProvider.of(context).data;
    return EasyLocalizationProvider(
      data: data,
      child: MaterialApp(
        title: 'Flutter Demo',
        localizationsDelegates: [
          GlobalMaterialLocalizations.delegate,
          GlobalWidgetsLocalizations.delegate,
          //app-specific localization
          EasylocaLizationDelegate(
              locale: data.locale ?? Locale('en', 'US'),
              path: 'resources/langs'),
        ],
        supportedLocales: [Locale('en', 'US'), Locale('ar', 'DZ')],
        locale: data.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;
  incrementCounter() {
    setState(() {
      counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
    var data = EasyLocalizationProvider.of(context).data;
    return EasyLocalizationProvider(
      data: data,
      child: Scaffold(
        appBar: AppBar(
          title: Text(AppLocalizations.of(context).tr('title')),
          actions: <Widget>[
            FlatButton(
              child: Text("English"),
              color: Localizations.localeOf(context).languageCode == "en"
                  ? Colors.lightBlueAccent
                  : Colors.blue,
              onPressed: () {
                this.setState(() {
                  data.changeLocale(Locale("en"));
                  print(Localizations.localeOf(context).languageCode);
                });
              },
            ),
            FlatButton(
              child: Text("عربي"),
              color: Localizations.localeOf(context).languageCode == "ar"
                  ? Colors.lightBlueAccent
                  : Colors.blue,
              onPressed: () {
                this.setState(() {
                  data.changeLocale(Locale("ar"));
                  print(Localizations.localeOf(context).languageCode);
                });
              },
            )
          ],
        ),
        body: Center(
          child: new Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: <Widget>[
              new Text(AppLocalizations.of(context)
                  .tr('msg', args: ['aissat', 'Flutter'])),
              new Text(AppLocalizations.of(context).plural('clicked', counter)),
              new FlatButton(
                onPressed: () async {
                  incrementCounter();
                },
                child: new Text(AppLocalizations.of(context).tr('clickMe')),
              ),
              new Text(
                AppLocalizations.of(context).tr('profile.reset_password.title'),
              ),
            ],
          ),
        ),
        floatingActionButton: FloatingActionButton(
          onPressed: incrementCounter,
          child: Text('+1'),
        ),
      ),
    );
  }
}

Screenshots

Arbic RTL English LTR

Contributors thanks!

Libraries

easy_localization
easy_localization_delegate
easy_localization_provider