Flutter最新版本更新后iOS构建出现词法/预处理器错误

更新Flutter到最新版本后，iOS应用无法正常编译启动，更新前可正常运行。调试控制台输出如下：

Xcode build done.                                            6.4s
Failed to build iOS app
Lexical or Preprocessor Issue (Xcode): 'Flutter/Flutter.h' file not found
/Users/modestovascofornas/.pub-cache/hosted/pub.dev/webview_flutter_wkwebview-2.9.5/ios/Classes/FWFWebViewHostApi.h:4:8

Lexical or Preprocessor Issue (Xcode): 'Flutter/Flutter.h' file not found
/Users/modestovascofornas/.pub-cache/hosted/pub.dev/webview_flutter_wkwebview-2.9.5/ios/Classes/FWFWebsiteDataStoreHostApi.h:4:8

Lexical or Preprocessor Issue (Xcode): 'Flutter/Flutter.h' file not found
/Users/modestovascofornas/.pub-cache/hosted/pub.dev/webview_flutter_wkwebview-2.9.5/ios/Classes/FWFUserContentControllerHostApi.h:4:8

Lexical or Preprocessor Issue (Xcode): 'Flutter/Flutter.h' file not found
/Users/modestovascofornas/.pub-cache/hosted/pub.dev/webview_flutter_wkwebview-2.9.5/ios/Classes/FWFWebViewConfigurationHostApi.h:4:8

Lexical or Preprocessor Issue (Xcode): 'Flutter/Flutter.h' file not found
/Users/modestovascofornas/.pub-cache/hosted/pub.dev/webview_flutter_wkwebview-2.9.5/ios/Classes/FWFUIDelegateHostApi.h:4:8

Lexical or Preprocessor Issue (Xcode): 'Flutter/Flutter.h' file not found
/Users/modestovascofornas/.pub-cache/hosted/pub.dev/webview_flutter_wkwebview-2.9.5/ios/Classes/FWFScrollViewHostApi.h:4:8

Lexical or Preprocessor Issue (Xcode): 'Flutter/Flutter.h' file not found
/Users/modestovascofornas/.pub-cache/hosted/pub.dev/webview_flutter_wkwebview-2.9.5/ios/Classes/FWFUIViewHostApi.h:4:8

Could not build the application for the simulator.
Error launching application on iPhone 15 Pro Max.

解决步骤 #

• 清除Flutter项目缓存并重新拉取依赖

  flutter clean
  flutter pub get
  

• 清理iOS端Pod缓存并重新安装依赖
  进入项目的iOS目录执行：

  cd ios
  pod deintegrate
  pod install
  

• 检查webview_flutter依赖版本兼容性
  当前报错的webview_flutter_wkwebview 2.9.5可能与最新Flutter版本不兼容。打开项目的pubspec.yaml文件，将webview_flutter依赖更新到官方推荐的最新兼容版本，之后重新执行flutter pub get和pod install。
• 重启Xcode和iOS模拟器，确保缓存完全清除
• 若以上方法无效，手动删除pub缓存中的旧版本webview包：

  rm -rf /Users/modestovascofornas/.pub-cache/hosted/pub.dev/webview_flutter_wkwebview-2.9.5
  

  完成后重新拉取依赖并安装Pod。

内容的提问来源于stack exchange，提问作者mvasco