Prerequisites :
1. Working Eclipse IDE with ADT installed (Tutorial)
2. Basics of Java

Part 1: Understanding Views
Start a new Android Project. File >> New >> Android Project.
Major Components of the new Android Project screen are
Project Name : Just the name displayed in Eclipse
Build Target : Supported Version, We chose to build for Android 2.2
Application Name : Name Displayed in the Application Header
Package Name : Follow the international reverse hierarchy nomenclature as in java packages (can be anything)
Create Activity… :  Keeping activity checked will create a java file in the “src” folder which will have a function that will be called as soon as the application starts.