Many times, we need to change the device orientation to see a different view or to perform some other action/assertion. Appium exposes a method to change the orientation from landscape to portrait and vice versa:

rotate(ScreenOrientation orientation)

ScreenOrientation gives a possible screen orientation and supports LANDSCAPE or PORTRAIT.

Using the rotate API:

androidDriver.rotate(ScreenOrientation.LANDSCAPE);

Appium also exposes an API to get the current orientation of the device:

androidDriver.getOrientation()

A good practice is to perform the operation and change the orientation back so that it doesn't affect the other test cases unless it is intended to do so.