INSTALLING ANDROID SDK ON YOUR SYSTEM

Step 1:

Downloading the Eclipsc from the following link.

http://www.eclipse.org/downloads/

The "Eclipse Classic" version is recommended.

Step 2:

Downloading the "Software Development Kit"

The SDK starter package is not a full development environment—it includes only the core SDK Tools, which you can use to download the rest of the SDK components (such as the latest Android platform).

http://developer.android.com/sdk/index.html

Step3:

Installing ADT (Android Development Tool) for the Eclipsc.

http://developer.android.com/sdk/eclipse-adt.html

Step 4:

Adding ADT to Eclipsc.

 Help > Install New Software.... > add the downloaded ADT and click "OK".

Step 5:

Adding the Downloaded SDK

Window  > Preferences >  Then a window will open...

In that select Android. Then click on browse and target the downloaded sdk and click on ok.

That's it. Installation completed.

Note :  

For the Step 5 we need INTERNET.