Let me start by acknowledging that I did find a similar question on here but there was only one answer and that answer did not apply in my situation, so...
I am just
You might look at this answer.
That person's problem was that the file was not created as an XML file, from Eclipse's point of view. Try File > New > Other... / select XML.
I just removed this line
<?xml version="1.0" encoding="utf-8"?>
Saved, built, then re-added it again and it was fine
You need to keep the new xml file in res/layout folder....and done... thanks