flutter_localized_string

A new flutter plugin project.

Getting Started

This is library inspired by NSLocalizedString from iOS. Uses json files as language files eg. en.json , de.json

You have to add these to your pubspec.yaml:

flutter_localizations: 
    sdk: flutter

then you have to add within flutter: section:

assets:
    - assets/

When you're all set with pubspec file, you must put this in to your main.dart:

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      localizationsDelegates: [
        // ... app-specific localization delegate[s] here
        GlobalMaterialLocalizations.delegate,
        GlobalWidgetsLocalizations.delegate,
      ],
      supportedLocales: [
        const Locale('en', 'US'), // English
        // ... other locales the app supports
      ],

      title: "title",
      theme: ThemeData(
        primarySwatch: Colors.blue,
      ),      home: LocalizedWidget(widget: MyHomePage()),
    );
  }

LocalizedWidget is very important in here and it is responsible for wrapping up the class with FutureBuilder and enables plugin to load json file while loading first widget tree. You need to put it into the widget tree only once at the app startup , it can be also done in some kind of Splashscreen widget or something. We just need time to load content. :)

Useful imports


import 'package:flutter_localized_string/localized_widget.dart';
import 'package:flutter_localized_string/flutter_localized_string.dart';

Library usage

Once you did all of these steps. You should be able to use library as follows:

LocalizedString.by(key: "title")

while en.json looks like this:

{
    "title" : "Main title"
}

Libraries

flutter_localized_string
localized_widget

Dart

dart:ui
Built-in types and core primitives for a Flutter application. [...]

Core

dart:async
Support for asynchronous programming, with classes such as Future and Stream. [...]
dart:collection
Classes and utilities that supplement the collection support in dart:core. [...]
dart:convert
Encoders and decoders for converting between different data representations, including JSON and UTF-8. [...]
dart:core
Built-in types, collections, and other core functionality for every Dart program. [...]
dart:developer
Interact with developer tools such as the debugger and inspector. [...]
dart:math
Mathematical constants and functions, plus a random number generator. [...]
dart:typed_data
Lists that efficiently handle fixed sized data (for example, unsigned 8 byte integers) and SIMD numeric types. [...]

VM

dart:io
File, socket, HTTP, and other I/O support for non-web applications. [...]
dart:isolate
Concurrent programming using isolates: independent workers that are similar to threads but don't share memory, communicating only via messages. [...]