Download Android SDK/ADT

ADT Bundle Download

The Android ADT provides you access to the API libraries and development tools necessary to build, test, and debug any application developed on Android.
If you are new to Android development, and unaware and don’t wanna do lengthy setup of android SDK then I will recommend you to download the ADT Bundle to quickly starting the android application developing. It includes the essential Android SDK components and a version of the Eclipse IDE with built-in ADT (Android Developer Tools) to streamline your Android app development.
With a single download of ATD, you will have the access to below tools you will need to begin developing android application:
  1. Eclipse + ADT plugin
  2. Android SDK Tools
  3. Android Platform-tools
  4. A version of the Android platform
  5. A version of the Android system image for the emulator

SDK Download

If you are not willing to work on eclipse and require a sdk for your android application development then use below link to download the SDK and use your own(any other than eclipse) IDE and set the SDK in their preferences.