问题
when upload my app with xcode 10.1 i'm getting the Warning
WARNING ITMS-90725: "SDK Version Issue. This app was built with the iOS 12.0 SDK. Starting March 2019, all iOS apps submitted to the App Store must be built with the iOS 12.1 SDK or later, included in Xcode 10.1 or later.
My project was developed in swift 4.2.1 and xcode 10.1
回答1:
Make sure you have the latest version of Xcode.
If you do have Xcode 10.1 this is just a reminder that all of your apps need to comply with these terms.
Also regardless of Xcode version if your app did archive/build successfully you have nothing to worry about at the moment.
EDIT: Now ALL APPS submitted to the AppStore must have the 12.1 SDK or they will be rejected.
回答2:
Also, if you're running a CI/CD pipeline/workflow (such as Bitrise), make sure you've updated the Xcode version in the tool's Stack as well. In my case, my local version was correct but the Xcode version in my pipeline referenced 10.0 rather than 10.1
回答3:
I had to uninstall Xcode 10.1 and re-install it.
回答4:
This trick worked for me: Download Xcode 10.2, extract and just copy(iPhoneOS12.2.sdk Folder): or direct download zip : https://drive.google.com/file/d/1ZGANCBE90Ogt4FD_y_ACgcIFP0qQapSf/view?usp=sharing
Right click->Show Package Contents->Contents->Developer->Platforms->iPhoneOS.platform->Developer->SDKs->iPhoneOS12.2.sdk and past it same directory on your Xcode. after this close your Xcode, reopen Xcode , Archive and upload again.
来源：https://stackoverflow.com/questions/53786309/warning-sdk-version-issue-xcode-10-1