cordova platform add android not working while listing Android targets

Question

I got problem when i want to add an android platform to my phoneGap application. I got this message in my CLI when i execute the command cordova platform add android :

Answer 1

after a long struggle, after doing all of the above suggestions more then once with growing desperation, i simply openned my cmd as administrator. it worked. i guess i just got too used for "sudo" before i got this pc.