I’m trying to install platform-tools and other support packages to develop Android application using with Eclipse.
But I got this scene at Android SDK Manager.
I can’t see any “not installed” package like platform-tools , API , etc..
Any idea?
Thanks.

Make sure that tools->settings->force https… is checked, check android sdk tools, then the install button will be enabled, now install 1 package (restart sdk manager)and after that other sdks will appear. (dont forget to close eclipse, and disable your antivirus while doing that) . this worked for me!