google Analytics.. not working>?

I have read the forums, the help pages, and watched videos about adding the code to my footer.php. page. I added the code right before the last bit of code… /body> </html>
I have waited 12 hours and still having nothing showing up in Google Ananlytics.
What am I doing wrong? any suggestions? If I click on the Real time in Analytics it once and awhile shows 1 visitor but then disappears and I cant seem to find it.

Any help is appreciated.