Screen orientation on Raspberry Pi 3 with Android things

I find out finally how to achieve it.

Solution found there : Android Things with Rasp3 7 inch touchscreen

You have to mount the boot partition from the sdcard on your laptop and edit the /boot/config.txt file and add the following line:

lcd_rotate=2

By adding this line both display and touchscreen will be rotated, compared to display_rotate=2 where only display is rotated and touchscreen remains upside down.

Try this:

if (Build.DEVICE.equalsIgnoreCase("rpi3"))
    setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_REVERSE_LANDSCAPE);