Sometimes it is important to know the width, height and screen orientation of the device so that you can re-arrange or re-size your views dynamically. Here is the code you can use to get width, height and orientation pragmatically.
Display display = ((WindowManager) getSystemService(WINDOW_SERVICE)).getDefaultDisplay();
int width = display.getWidth();
int height = display.getHeight();
int orientation = display.getOrientation();