1.找到pubspec.yaml配置flutter_localizations并保存
2.导入国际化包flutter_localizations
import 'package:flutter_localizations/flutter_localizations.dart';
3.在入口文件main.dart中设置国际化
localizationsDelegates: [
//此处
GlobalMaterialLocalizations.delegate,
GlobalWidgetsLocalizations.delegate,
],
supportedLocales: [
//此处
const Locale('zh', 'CH'),
const Locale('en', 'US'),
],
4.要显示的控件设置：
