git not ignoring folder specified by .gitignore

Question

I am using the .gitignore file from here but I still am still finding that

 CalFoo.xcodeproj/project.xcworkspace/xcuserdata/wcochran.xcuserdatad/UserInterfaceState.xcuserstate

is staged for a commit?

Why isn't the folder xcuserdata excluded?

Answer 1

Did you already commit after adding .gitignore to tracking files?

git rm -r --cached .

git add .

git commit -m ".gitignore is now should working"