Yesterday I updated Android SDK tool to 22.6.1. After update, Eclipse show the following error,
This Android SDK requires Android Developer Toolkit version 2
I faced the same issue yesterday and I tried with the following way
instead of updating using the url with http://
make https://
Android Developer Tools Update Site - http://dl-ssl.google.com/android/eclipse/
with
Android Developer Tools Update Site - https://dl-ssl.google.com/android/eclipse/
EDIT:
Open your eclipse and go to Help->Install New Software...
Choose the Work with Drop Down and select the ADT url previously you installed
Change the URL
http://
with https://
you need to choose Work with: with Already installed URL and change to https://
EDIT II: you need to unchecked the update sites during install to find required software