hacked it after hours of frustration ....
Well it is. stand on FaceBook Project, which you created according to the instructions of the developers faceBook. right-click and select properties, select android and select the android API from the list, click "Apply" and "OK." clean the project and make sure the error is gone. now it's time to go to your project, right-click and select properties. go to Android, click the "Add" button and select the faceBook project. click on the button and ok. clean projects just for good luck. and now you can finally impose com.facebook!
hope this saves some bad time for the programmer in the future.
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