Before Starting Android

Before we start developing Android apps, there is something you must know.
When we create new project, of all the system generated files a few are of utmost importance as whole of the android programming is done on these files.
The Files are:

• main.java
• In this file, we perform the coding and apply the logics of our program.
• layout.xml
• In this file, we create the UI or we can say how the application will look to the user.
• menu.xml
• In this file, we create the menu items for any page or we can use the same menu items for the whole application.
• manifest.xml
• This file contains the information of all the classes created either by us or by the IDE. This file also contains the permissions required by our application(if any).