SDK Manager told me I had updates and updated me from version 21 to 22, then said I should check for updates. I\'m running bundled eclipse/ADT from about last month, Juno ve
Manually download zip and then intent of URL use that zip. details
are mention here .
http://developer.android.com/sdk/installing/installing-adt.html#Troubleshooting
Help > Install New Software -- then choose the link..Select the
updates to install and then crucially, uncheck "Contact all update
sites during install to find required software".