进入项目目录:

git rm --cached ProjectName.xcodeproj/project.xcworkspace/xcuserdata/username.xcuserdatad/UserInterfaceState.xcuserstate

git commit -m "Removed file that shouldn‘t be tracked"

提交代码, 经常出现工作副本“项目”有未提交的更改 The working copy "Project" has uncommitted changes.