translations_center

pub package license

Offline-first OTA (Over-The-Air) localization SDK for Flutter apps, featuring Stale-While-Revalidate caching with ETag support.

Architecture

This package implements an offline-first strategy:

  1. Try loading from SharedPreferences cache (zero latency).
  2. If empty, load from fallback assets.
  3. In the background, ping the server using the stored ETag.
  4. If a newer translation bundle is available (HTTP 200), update the cache.
  5. If nothing changed, the server returns HTTP 304, saving bandwidth.

Missing keys are buffered and automatically reported to the server.

Installation

dependencies:
  translations_center: ^0.1.0

Quick Start

1. Initialization

Call init in your main() before runApp.

import 'package:flutter/material.dart';
import 'package:translations_center/translations_center.dart';

void main() async {
  WidgetsFlutterBinding.ensureInitialized();
  
  await TranslationsCenter.init(
    serverUrl: 'https://api.translations-center.com',
    apiKey: 'your_api_key_here',
    defaultLocale: const Locale('en'),
    fallbackAssetsPath: 'assets/i18n',
  );
  
  runApp(const MyApp());
}

2. AppStrings Pattern

Create an enum for your keys:

enum AppStrings {
  exit,
  welcome;
  
  String get([dynamic arg0, dynamic arg1, dynamic arg2, dynamic arg3]) {
    final args = <dynamic>[
      if (arg0 != null) arg0,
      if (arg1 != null) arg1,
      if (arg2 != null) arg2,
      if (arg3 != null) arg3,
    ];
    return TranslationsCenter.instance.get(name, args);
  }
}

3. Usage

Text(AppStrings.exit.get());
Text(AppStrings.welcome.get('Eyal', 'My App'));

License

MIT

Libraries

translations_center