Start Android Development

Hi friends Do you know what is android????
Android is a mobile operating system. Android is used in Smartphone devices
Android first release is Android 1.0 on 23 September 2008 (API Level 1)
Android 1.1 on 9 February 2009 (API Level 2)
Android 1.5 Cupcake on 30 April 2009 (API Level 3)
Android 1.6 Donut on 15 September 2009 (API Level 4)
Android 2.0 Eclair on 26 October 2009 (API Level 5)
Android 2.0.1 Eclair on 3 December 2009 (API Level 6)
Android 2.1 Eclair on 12 January 2010 (API Level 7)
Android 2.2 Froyo on 20 May 2010 (API Level 8)
Android 2.3 Gingerbread on 6 December 2010 (API Level 9)
Android 2.3.3 Gingerbread on 9 February 2011 (API Level 10)
Android 3.0 Honeycomb on 22 February 2011 (API Level 11)
Android 3.1 Honeycomb on 10 May 2011 (API Level 12)
Android 3.2 Honeycomb on 15 July 2011 (API Level 13)
Android 4.0 Ice Cream Sandwich on 19 October 2011 (API Level 14)
Android 4.0.3 Ice Cream Sandwich on 16 December 2011 (API Level 15)
Android 4.1 Jellybean on 9 July 2012 (API Level 16)
Android 4.2 Jellybean on 13 November 2012 (API Level 17)
Android 4.3 Jellybean on 24 July 2013 (API Level 18)
Android 4.4 KitKat on 31 October 2013 (API Level 19)

First we need an IDE  to develop android app
the all development tool kit download from here Get the Android SDK
after downloading extract the zip file in to folder.
then open the eclipse folder double click the eclipse.exe file now the IDE will open

This is the IDE
then goto the window>preferences
then a window will appear in that window select android tab

Set the sdk location to the downloaded sdk folder then click apply and ok
Now your development tools are ready.
In this time you have only one development kit its android 4.4 kitkat . you have to download other sdk from internet
by clicking sdk manager icon in IDE
in the window you can select your sdk requirements and click install packages

At last we need a testing device called emulator(AVD). click the android virtual device icon
Create new virtual device(Emulator)
1. dont forget to add sd card memory.
2. allocate ram memory more than 512 mb.
3. tick snapshot.

Now you can start coding.   Happy Coding -:)