Android and Versions

 Android 

Android is an open source and Linux-based Operating System for mobile devices such as smartphones and tablet computers. Android was developed by the Open Handset Alliance, led by Google, and other companies.

• Initially, Andy Rubin founded Android Incorporation in Palo Alto, California, United States in October, 2003.
• In 17th August 2005, Google acquired android Incorporation. Since then, it is in the subsidiary of Google Incorporation.
• The key employees of Android Incorporation are Andy Rubin, Rich Miner, Chris White and Nick Sears.

Android Versions, Codename and API

Let's see the android versions codename and API provided by Google.

Version	Codename	API
1.5	Cupcake	3
1.6	Donut	4
2.1	Eclair	7
2.2	Froyo	8
2.3	Gingerbread	9 and 10
3.1 and 3.3	Honeycomb	12 and 13
4.0	Ice Cream Sandwitch	15
4.1, 4.2 and 4.3	Jelly Bean	16, 17 and 18
4.4	KitKat	19

Download Process :

1)      Open http://developer.android.com/sdk/index.html  or Type in Google “adt bundle windows” and Select Android SDK | Android Developers.

2)      Click Download the SDK (ADT Bundle for Windows ).

3)      Check Conditions.

4)      Select Which bit of Software we need.( either 32-bit or 64-bit ).

5)      Click “Download the SDK ADT Bundle for Windows.

(Software will be downloaded in zip format so we need unzipping software)

     

res/layout-port/                    XML file defining UI layout (vertical mode).
/res/layout-land/                  XML file defining UI layout (horizontal mode).