fluintl
fluintl 是一个为应用提供国际化的库，可快速集成实现应用多语言。该库封装了一个国际化支持类，通过提供统一方法getString(id)获取字符串。CustomLocalizations多语言支持类。LBaseState可简洁获取字符串。
使用步骤:
1.创建多语言资源字符串id管理类StringIds 和 多语言资源Map
///多语言资源id管理类.
class StringIds {
static String titleHome = 'title_home';
}
///简单多语言资源.
Map<String, Map<String, String>> localizedSimpleValues = {
'en': {
StringIds.titleHome: 'Home',
},
'zh': {
StringIds.titleHome: '主页',
},
};
///多语言资源.
Map<String, Map<String, Map<String, String>>> localizedValues = {
'en': {
'US': {
StringIds.titleHome: 'Home',
}
},
'zh': {
'CN': {
StringIds.titleHome: '主页',
},
'HK': {
StringIds.titleHome: '主頁',
},
}
};
2.在MyApp initState配置多语言资源(可配置通用或简单多语言资源,二选一)
void initState() {
super.initState();
// setLocalizedSimpleValues(localizedSimpleValues);//配置简单多语言资源
setLocalizedValues(localizedValues); //配置多语言资源
}
3.在MaterialApp指定localizationsDelegates和supportedLocales:
MaterialApp(
home: MyHomePage(),
localizationsDelegates: [
GlobalMaterialLocalizations.delegate,
GlobalWidgetsLocalizations.delegate,
CustomLocalizations.delegate //设置本地化代理
],
supportedLocales: CustomLocalizations.supportedLocales,//设置支持本地化语言集合
);
4.字符串获取
IntlUtil.getString(context, StringIds.titleHome);
CustomLocalizations.of(context).getString(StringIds.titleHome)
5.其他（不推荐使用）
//在MyHomePage初始化CustomLocalizations
class _MyHomePageState extends State<MyHomePage> {
Widget build(BuildContext context) {
CustomLocalizations.init(context); //在主页初始化.
...
}
}
//getString
CustomLocalizations.instance.getString(StringIds.titleHome)
继承LBaseState() (MyHomePageState不能使用)
cl.getString(StringIds.titleHome)
6.应用国际化详细使用请参考flutter_wanandroid
Q：Flutter国际化系统切换iOS不生效问题？
A：在Xcode项目Localizations下添加支持语言即可，原文。
Add dependency
dependencies:
flutter_localizations:
sdk: flutter
fluintl: x.x.x #latest version
APIs
setLocalizedSimpleValues(values) : 配置简单多语言资源.
setLocalizedValues(values) : 配置多语言资源.
CustomLocalizations.delegate : 自定义本地化代理.
CustomLocalizations.supportedLocales : 本地支持的语言环境.
CustomLocalizations.of(context) : 获取CustomLocalizations.
getString(id, {languageCode, countryCode}) : 通过id获取字符串,可指定languageCode,countryCode.
IntlUtil.getString(context, id) : 通过id获取字符串,可指定languageCode,countryCode.
// 不推荐使用
CustomLocalizations.init(context) : 自定义本地化代理初始化.(在MyHomePage初始化)
LBaseState (extends or with LBaseState) : 可方便简洁获取字符串.
cl.getString(id).(MyHomePage不能使用)
Example
import 'package:flutter_localizations/flutter_localizations.dart';
import 'package:fluintl/fluintl.dart';
///多语言资源id管理类.
class StringIds {
static String titleHome = 'title_home';
}
///简单多语言资源.
Map<String, Map<String, String>> localizedSimpleValues = {
'en': {
StringIds.titleHome: 'Home',
},
'zh': {
StringIds.titleHome: '主页',
},
};
///多语言资源.
Map<String, Map<String, Map<String, String>>> localizedValues = {
'en': {
'US': {
StringIds.titleHome: 'Home',
}
},
'zh': {
'CN': {
StringIds.titleHome: '主页',
},
'HK': {
StringIds.titleHome: '主頁',
},
'TW': {
StringIds.titleHome: '主頁',
}
}
};
class _MyAppState extends State<MyApp> {
Locale _locale;
@override
void initState() {
super.initState();
// setLocalizedSimpleValues(localizedSimpleValues);//配置简单多语言资源
setLocalizedValues(localizedValues);//配置多语言资源
// _locale = new Locale('en', 'US');//English
// _locale = new Locale('zh', 'HK');//繁體中文（香港）
}
@override
Widget build(BuildContext context) {
return MaterialApp(
home: MyHomePage(),
locale: _locale,
localizationsDelegates: [
GlobalMaterialLocalizations.delegate,
GlobalWidgetsLocalizations.delegate,
CustomLocalizations.delegate //设置本地化代理
],
supportedLocales: CustomLocalizations.supportedLocales,//设置支持语言
);
}
}
class _MyHomePageState extends State<MyHomePage> {
@override
Widget build(BuildContext context) {
//在主页初始化.
CustomLocalizations.init(context);
return Scaffold(
appBar: AppBar(
title: Text(
CustomLocalizations.of(context).getString(StringIds.titleHome)),
),
body: Center(
child: new Text(
CustomLocalizations.instance.getString(StringIds.titleHome)),
));
}
}
class _SettingPageState extends LBaseState<SettingPage> {
@override
Widget build(BuildContext context) {
CustomLocalizations _customLocal = CustomLocalizations.instance;
return Scaffold(
body: new ListView(
children: <Widget>[
ListTile(title: Text(CustomLocalizations.of(context).getString(StringIds.titleSetting))),
ListTile(title: Text(CustomLocalizations.instance.getString(StringIds.titleSetting))),
ListTile(title: Text(_customLocal.getString(StringIds.titleSetting))),
ListTile(title: Text(cl.getString(StringIds.titleSetting))),
ListTile(),
ListTile(title: Text(cl.getString(StringIds.titleSetting, languageCode: 'en', countryCode: 'US'))),
ListTile(title: Text(cl.getString(StringIds.titleSetting, languageCode: 'zh', countryCode: 'CN'))),
ListTile(title: Text(cl.getString(StringIds.titleSetting, languageCode: 'zh', countryCode: 'HK'))),
ListTile(title: Text(cl.getString(StringIds.titleSetting, languageCode: 'zh', countryCode: 'TW'))),
],
),
);
}
}
Screenshot
