Changing Android Emulator's orientation

It’s important to test your application on different layout orientations and also on different screen sizes.
I am going to show how to change your emulator orientation.
The solution is next:

Switch to previous layout orientation (for example,portrait,landscape) - KEYPAD_7 or Ctrl-F11
Switch to next layout orientation (for example,portrait,landscape) - KEYPAD_9 or Ctrl-F12

Note:
If you prefer to use KEYPAD_7 or KEYPAD_9 you need to turn off your Num Lock.

As you can see it is very simple.