To Create Bitmap
Bitmap bmp = Bitmap.createBitmap((int)
getWindowManager().getDefaultDisplay().getWidth(), (int)
getWindowManager().getDefaultDisplay().getHeight(), Bitmap.Config.ARGB_8888);
To create Bitmap from resources
Bitmap image=BitmapFactory.decodeResource(context.getResources(),R.drawable.ic_launcher);
Bitmap Configurations:
ALPHA_8 : 8 bits on Alpha channel, and no other colours.
ARGB_4444: 4 bits per color channel includes alpha,
ARGB_8888: 8 bits per color channel includes alpha,
RGB_565 : 5 bits for Red,6 bits for Green,5 bits for Blue
