Pyjnius: 「ビュー階層を作成した元のスレッドのみがそのビューにアクセスできます。」 android.view.Windowメソッドにアクセスしようとするとエラーが発生します

from kivy.app import App
from kivy.uix.relativelayout import RelativeLayout
from jnius import autoclass

CurrentActivity  = autoclass('org.kivy.android.PythonActivity').mActivity
view = CurrentActivity.getWindow().getDecorView()
view.setKeepScreenOn(True)

class Root(RelativeLayout):
    def __init__(self):
        super().__init__()

class SomeApp(App):
    def build(self):
        return Root()

SomeApp().run()

android.view.Window別の方法を使用した場合にも、同じエラーが発生します。

CurrentActivity  = autoclass('org.kivy.android.PythonActivity').mActivity
WindowManager = autoclass('android.view.WindowManager$LayoutParams')
CurrentActivity.getWindow().addFlags(WindowManager.FLAG_KEEP_SCREEN_ON)

Kivy 1.10.1
Python 3.6

12-15 16:48:21.692 18623 18646 I python  :  Traceback (most recent call last):
12-15 16:48:21.692 18623 18646 I python  : WARNING:kivy:stderr: Traceback (most recent call last):
12-15 16:48:21.693 18623 18646 I python  :    File "main.py", line 20, in <module>
12-15 16:48:21.693 18623 18646 I python  : WARNING:kivy:stderr:   File "main.py", line 20, in <module>
12-15 16:48:21.694 18623 18646 I python  :      view.setKeepScreenOn(True)
12-15 16:48:21.694 18623 18646 I python  : WARNING:kivy:stderr:     view.setKeepScreenOn(True)
12-15 16:48:21.695 18623 18646 I python  :    File "jnius/jnius_export_class.pxi", line 734, in jnius.JavaMethod.__call__ (jnius/jnius.c:25894)
12-15 16:48:21.695 18623 18646 I python  : WARNING:kivy:stderr:   File "jnius/jnius_export_class.pxi", line 734, in jnius.JavaMethod.__call__ (jnius/jnius.c:25894)
12-15 16:48:21.697 18623 18646 I python  :    File "jnius/jnius_export_class.pxi", line 828, in jnius.JavaMethod.call_method (jnius/jnius.c:27082)
12-15 16:48:21.697 18623 18646 I python  : WARNING:kivy:stderr:   File "jnius/jnius_export_class.pxi", line 828, in jnius.JavaMethod.call_method (jnius/jnius.c:27082)
12-15 16:48:21.698 18623 18646 I python  :    File "jnius/jnius_utils.pxi", line 93, in jnius.check_exception (jnius/jnius.c:4012)
12-15 16:48:21.698 18623 18646 I python  : WARNING:kivy:stderr:   File "jnius/jnius_utils.pxi", line 93, in jnius.check_exception (jnius/jnius.c:4012)
12-15 16:48:21.699 18623 18646 I python  :  jnius.JavaException: JVM exception occurred: Only the original thread that created a view hierarchy can touch its views.
12-15 16:48:21.699 18623 18646 I python  : WARNING:kivy:stderr: jnius.JavaException: JVM exception occurred: Only the original thread that created a view hierarchy can touch its views.
12-15 16:48:21.822 18623 18646 I python  : Python for android ended.
12-15 16:48:21.830 18623 18623 V SDL     : onWindowFocusChanged(): false
12-15 16:48:21.833 18623 18623 V PythonActivity: onPause()
12-15 16:48:21.833 18623 18623 V SDL     : onPause()
12-15 16:48:21.833 18623 18623 V SDL     : nativePause()
12-15 16:48:21.833 18623 18623 F libc    : Fatal signal 11 (SIGSEGV), code 1, fault addr 0x0 in tid 18623 (ample.myaasdqpp)