About Android SDK and It's contents

Android:

Android is a Stack for mobile devices, that includes an Operating system, middle ware, and key applications.

Android SDK:

The android SDK provides tools and libraries that are necessary to begin developing application that run on android devices..

SDK contains the following folders:

 1)add-ons:
    -Add-ons is an extension to the Android SDK development environment that  lets your to develop applications for devices .
  -Eg. we can develop an android application that uses google maps.This google maps API is available in this add-on folder.

2)docs:

- This folder contains full set of documentation in HTML format.
-This documentation includes development guide and API reference.
-This documentation is very useful for the developers, who is not having any net connection(broadband) .

3)platforms:

- This folder contains a set of Android platform versions. So that you can develop applications in different versions.

4)samples:

-This folder contains Sample code and applications that are specific to platform versions.

5)tools:
-This folder contains set of development and profiling tools available to us, such as emulator,android tool, adb, ddms etc.

6) SDK Readme.text:
-This file explains how to perform initial setup of android SDK.
-This also explains how to launch the Android SDK and AVD Manager tool on all platforms.

7)SDK setup.exe:
-This is shortcut that launches the Android SDK and AVD Manager tool.

8) usb_driver:

-This is folder is not in the android sdk if you are downloaded for Linux Operating System.
-We get this folder whenever we downloaded the SDK for Windows.
-This folder contains the driver files that we can install on our windows computer.So that we can run and debug our applications on actual device.

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