Flutter添加flutter_localization依赖报错：SDK中找不到该包

问题描述 #

添加本地化依赖时出现如下错误：

由于timer依赖SDK中的flutter_localization（Flutter SDK中找不到该包），版本解析失败。

已确认Android Studio中Flutter和Dart SDK路径配置正确，当前pubspec.yaml内容如下：

publish_to: 'none' # Remove this line if you wish to publish to pub.dev

version: 1.0.0+1

environment:
  sdk: '>=2.18.2 <3.0.0'

dependencies:
  flutter:
    sdk: flutter
  intl: ^0.17.0-nullsafety.2
  cupertino_icons: ^1.0.2
  sqflite: any
  shared_preferences: ^2.0.15
  path_provider: any
  flutter_localization:
    sdk: flutter
  flutter_cupertino_localizations: ^1.0.1

dev_dependencies:
  flutter_test:
    sdk: flutter

  flutter_lints: ^2.0.0

flutter:

  uses-material-design: true

需要依赖包来访问GlobalMaterialLocalizations，已尝试版本兼容性检查、依赖更新、SDK升级、重装Flutter和Dart等操作，问题仍未解决。

解决方案 #

1. 修正依赖包名称拼写
   Flutter官方提供的本地化依赖包是复数形式的flutter_localizations，而非你配置的单数flutter_localization，这是核心问题。修改pubspec.yaml中的对应依赖项：

   dependencies:
     # 保留其他原有依赖
     flutter_localizations:
       sdk: flutter
   

2. 清理缓存并重新获取依赖
   执行以下命令清除项目缓存，重新拉取正确的依赖：

   flutter clean
   flutter pub get
   

3. 确认SDK版本匹配
   检查当前Flutter SDK版本是否符合environment中的约束（>=2.18.2 <3.0.0），执行flutter --version查看版本，若版本过低，运行flutter upgrade升级到对应稳定版。

4. 验证本地化基础配置
   在main.dart中确保正确配置本地化代理，示例代码如下：

   import 'package:flutter_localizations/flutter_localizations.dart';
   
   void main() {
     runApp(const MyApp());
   }
   
   class MyApp extends StatelessWidget {
     const MyApp({super.key});
   
     @override
     Widget build(BuildContext context) {
       return MaterialApp(
         localizationsDelegates: const [
           GlobalMaterialLocalizations.delegate,
           GlobalWidgetsLocalizations.delegate,
           GlobalCupertinoLocalizations.delegate,
         ],
         supportedLocales: const [
           Locale('en', 'US'),
           Locale('zh', 'CN'),
         ],
         home: const HomePage(),
       );
     }
   }
   

内容的提问来源于stack exchange，提问作者IKnowNothingAboutFlutter