While I am trying to Install API 18 it shows only \"Google API 18\"
(nothing more). Now if I try to install these google APIs from Android SDK Manager
I´ve solved with this:
I had this problem on my Mac and Windows development machines. The only solution is to reinstall the latest version of the Android SDK. Google really dropped the ball on this.
I had a similar issue as you (purely from problem description), but my Android SDK Platform-tools WAS already installed (16.0.2). All the other packages didn't recognize it, however. I ended up uninstalling the platform tools, and then reinstalling. Then everything else recognized it.