How should I get started with Android Development?

"How should I get started with Android Development?" this is the first question one will think as a beginner .

How to Make an Activity Full Screen without Titlebar

To make an activity to occupy the entire screen area of an android powered device just use the following code.

How to set Orientation to a Particular activity ?

Android Orientation:

In android the orientation of the screen is two types portrait and landscape to set the orientation of a screen  go to activity file and add the following to the each activity code as