Flutter


  @override
  Widget build(BuildContext context) {
    return ComponentTheme(
      child: MultiProvider(
        providers: [
          // 切换语言的 provider，可监听语言变化并通知组件动态切换语言
          ChangeNotifierProvider.value(value: LocaleProvider()),
        ],
        child: Builder(builder: (context) {
          final themeState = BaseThemeProvider.of(context);
          final isDarkMode = themeState.isDarkMode;
          // 获取语言 provider
          final localeProvider = Provider.of<LocaleProvider>(context);
          return MaterialApp(
            // ...... 省略其他配置
            localizationsDelegates: const [
              AtomicLocalizations.delegate,
            // ...... 可以添加其他组件的国际化语言
            ],
            supportedLocales: AtomicLocalizations.supportedLocales, // 添加应用支持的语言
            locale: localeProvider.locale, // 设置当前语言
          );
        }),
      ),
    );

final localeProvider = Provider.of<LocaleProvider>(context, listen: false);
// 切换语言：英文
localeProvider.changeLanguage('en');

class ContactList extends StatefulWidget {
  const ContactList({
    super.key,
  });

  @override
  State<ContactList> createState() => _ContactListState();
}

class _ContactListState extends State<ContactList> {
  late AtomicLocalizations atomicLocale;
  // 省略其他代码
  
  @override
  void didChangeDependencies() {
    super.didChangeDependencies();
    // 动态初始化
    atomicLocale = AtomicLocalizations.of(context);
  }
  
  @override
  Widget build(BuildContext context) {
    // 根据语言变化，选择 addFriend 词条对应的语言
    return Text(atomicLocale.addFriend);
  }
}