今天在研究將項目升級到flutter2.0.5，弄完之后，切換到flutter1.22.4版本分支執行flutter run，項目運行不起來了，一直報錯
essages.m:4:9: fatal error: 'Flutter/Flutter.h' file not found
#import <Flutter/Flutter.h>
^~~~~~~~~~~~~~~~~~~
1 error generated.
In file included from
按照一般解決方案
flutter clean
flutter pub get
flutter run
又或者
rm -rf ios/Podfile
rm -rf ios/Podfile
flutter run
發現都不生效，關閉vscode、xcode clean、重復上面的步驟都不生效、電腦重啟，仍然不生效
最后找到解決方案
1.Remove ios/Flutter/Flutter.podspec: rm ios/Flutter/Flutter.podspec
2.flutter clean
3.Run your app again.
參考