這是我在PLAY商店看到的官方回文
*** For Android 5.0 users without Root ***
To enable keyboard support for Immersive Mode, just run the following command from your PC:
adb shell "pm grant com.phoenixstudios.aiogestures android.permission.WRITE_SECURE_SETTINGS"
A tutorial can be found here: http://blog.sightidea.com/?p=44