Unresolved package in Cheat Activity xml file

I receive this error at:

tools:context=“com.bignerdranch.android.geoquiz.CheatActivity”>

I checked the package name in the manifest. It doesn’t show the geoquiz subpackage, so I deleted it, but error still remains. I’ve also tried a rebuild.

I have excluded the full package name:

tools:context=".CheatActivity">

No more error.