flutter_translate

Flutter 的国际化 (i18n) 库。

它允许您定义内容的不同语言翻译并轻松切换。

flutter_translate

安装

将此添加到您的 package 的 pubspec.yaml 文件中

dependencies:
  flutter_translate: ^1.2.5

从命令行 (或从你的编辑器) 安装包

flutter pub get

配置

导入 flutter_translate

import 'package:flutter_translate/flutter_translate.dart';

将 json 本地化文件放在项目内你选择的文件夹中。

默认情况下，flutter_translate 会在项目根目录的 assets/i18n 文件夹中搜索本地化文件。

在 pubspec.yaml 中声明你的资源本地化目录

flutter:
  assets:
    - assets/i18n

在 main 函数中创建本地化代理，并通过 LocalizedApp 包裹它来启动应用程序。

void main() async
{
  var delegate = await LocalizationDelegate.create(
        fallbackLanguage: 'en',
        supportedLanguages: ['en', 'es_ES', 'fa']);

  runApp(LocalizedApp(delegate, MyApp()));
}

如果本地化文件的资源目录与默认目录 (assets/i18n) 不同，你需要指定它

void main() async
{
  var delegate = await LocalizationDelegate.create(
        fallbackLanguage: 'en',
        supportedLanguages: ['en', 'es_ES', 'fa'],
        basePath: 'assets/i18n/');

  runApp(LocalizedApp(delegate, MyApp()));
}

示例 MyApp

class MyApp extends StatelessWidget {

  @override
  Widget build(BuildContext context) {

    var localizationDelegate = LocalizedApp.of(context).delegate;

    return LocalizationProvider(
      state: LocalizationProvider.of(context).state,
      child: MaterialApp(
          title: 'Flutter Translate Demo',
          localizationsDelegates: [
            GlobalMaterialLocalizations.delegate,
            GlobalWidgetsLocalizations.delegate,
            localizationDelegate
          ],
          supportedLocales: localizationDelegate.configuration.supportedLocales,
          locale: localizationDelegate.currentLocale,
          theme: ThemeData(primarySwatch: Colors.blue),
          home: MyHomePage(),
          ),
    );
  }
}

用法

翻译字符串

translate('your.localization.key');

带参数翻译;

translate('your.localization.key', args: {'argName1': argValue1, 'argName2': argValue2});

带复数翻译

translatePlural('plural.demo', yourNumericValue);

JSON

"plural": {
    "demo": {
        "0": "Please start pushing the 'plus' button.",
        "1": "You have pushed the button one time.",
        "else": "You have pushed the button {{value}} times."
    }
}

更改语言

@override
Widget build(BuildContext context) {
...
  ...
    changeLanguage(context, 'en');
  ...
...
}

你可以在这里查看完整示例

https://github.com/bratan/flutter_translate/blob/master/example/lib/main.dart

GitHub

https://github.com/bratan/flutter_translate