Android :download android sdk manually

1- make sure that eclipse and sdk are closed


2- download the platform from this link


http://qdevarena.blogspot.com/2010/05/download-android-sdk-standalone-for.html

 and extract it under sdk\platforms

3-download system image for example  this for android 4.2  jelly-bean API level 17
http://software.intel.com/en-us/articles/intel-eula-x86-android-4-2-jelly-bean-bin

extract it under  sdk\system-images\android-17

4- start eclipse and start sdk