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

1.3.1

  • add useOnlyLangCode flag

1.3.0

  • Load translations from remote or backend
  • fixed many issues

1.2.1

  • supported shared_preferences
  • Save selected localization

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>

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 '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,
              path: 'resources/langs'),
        ],
        supportedLocales: [Locale('en', 'US'), Locale('ar', 'DZ')],
        locale: data.savedLocale,
        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","US"));
                  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","DZ"));
                  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'),
        ),
      ),
    );
  }
}

Load translations from backend :

You need to have backend endpoint (loadPath) where resources get loaded from and your endpoint must containing the translated keys.

example:

String loadPath = 'https://raw.githubusercontent.com/aissat/easy_localization/master/example/resources/langs'

'${loadPath}/${languageCode}-${countryCode}.json'

  • 'https://raw.githubusercontent.com/aissat/easy_localization/master/example/resources/langs/en-US.json'
  • 'https://raw.githubusercontent.com/aissat/easy_localization/master/example/resources/langs/ar-DZ.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,
              loadPath: 'https://raw.githubusercontent.com/aissat/easy_localization/master/example/resources/langs'),
        ],
        supportedLocales: [Locale('en', 'US'), Locale('ar', 'DZ')],
        locale: data.savedLocale,
        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","US"));
                  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","DZ"));
                  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

Donations

This project needs you! If you would like to support this project's further development, the creator of this project or the continuous maintenance of this project, feel free to donate. Your donation is highly appreciated (and I love food and coffee). Thank you! PayPal

  • Donate $5: Thank's for creating this project, here's a coffee for you!
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  • Donate $15: I really appreciate your work, let's grab some lunch!
  • Donate $25: That's some awesome stuff you did right there, dinner is on me! Of course, you can also choose what you want to donate, all donations are awesome!

Contributors thanks!

Libraries

easy_localization
easy_localization_delegate
easy_localization_provider