There are 4 orientations on an Android device: portrait, landscape, reversePortrait, reverseLandscape. The difference between portrait and reversePortrait is obvious but I'm not sure about the landscape orientations. Is Landscape orientation a 90° right rotation or a 90° left rotation compared to Portrait orientation ? I know this is a stupid question but I can't find a clear answer to it.
portrait: Normal Device Poisition when you can see the Brand Logo Straight!
landscape: Tilt top of the device 90 degree to left from portrait Position
reversePortrait :Tilt top of the device 90 degree to left from landscape Position
reverseLandscape : Tilt top of the device 90 degree to left from reversePortrait Position