Kivy App - Sticky hiding of navigation on Android

gistfile1.py

from kivy.app import App
from kivy.logger import Logger

try:
    from jnius import autoclass
    from android.runnable import run_on_ui_thread

    android_api_version = autoclass('android.os.Build$VERSION')
    AndroidView = autoclass('android.view.View')
    AndroidPythonActivity = autoclass('org.renpy.android.PythonActivity')

    Logger.debug(
        'Application runs on Android, API level {0}'.format(
            android_api_version.SDK_INT
        )
    )
except ImportError:
    def run_on_ui_thread(func):
        def wrapper(*args):
            Logger.debug('{0} called on non android platform'.format(
                func.__name__
            ))
        return wrapper


class MyApp(App):

    def on_start(self):
        self.android_set_hide_menu()

    def on_resume(self):
        self.android_set_hide_menu()

    @run_on_ui_thread
    def android_set_hide_menu(self):
        if android_api_version.SDK_INT >= 19:
            Logger.debug('API >= 19. Set hide menu')
            view = AndroidPythonActivity.mActivity.getWindow().getDecorView()
            view.setSystemUiVisibility(
                AndroidView.SYSTEM_UI_FLAG_LAYOUT_STABLE |
                AndroidView.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION |
                AndroidView.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN |
                AndroidView.SYSTEM_UI_FLAG_HIDE_NAVIGATION |
                AndroidView.SYSTEM_UI_FLAG_FULLSCREEN |
                AndroidView.SYSTEM_UI_FLAG_IMMERSIVE_STICKY
            )

Hi, I am trying to use this code, but I am failing. What Do i need to have installed and what Imports I need to add to buildozer.spec please?