I have Eclipse Helios 3.6 and it was working fine for my Java based web-apps. But now i thought of developing android app for the same I finished downloading Android SDK and was on the verge of installing the ADT in Eclipse for Windows 7 from this site-> https://dl-ssl.google.com/android/eclipse but it didn't worked.
After putting above address in Install a new software under eclipse it shows both Developer tools and NDK plugins and then on clicking NEXT it is showing :
Android DDMS 21.0.1.v201212060256-543035
Android Development Tools 21.0.1.v201212060256-543035
Android Hierarchy Viewer 21.0.1.v201212060256-543035
Android Native Development Tools 21.0.1.v201212060256-543035
Android Traceview 21.0.1.v201212060256-543035
Tracer for OpenGL ES 21.0.1.v201212060256-543035
all selected but in with error : "Cannot complete the install because of a conflicting dependency. Software being installed: Android Hierarchy Viewer 21.0.1.v201212060256-543035" so unable to proceed.
I tried all possible solutions like trying updating Eclipse but that too started showing error.
I advice you to use the latest version of eclipse here and the latest version of SDK and ADT