BrailleBack crashes when toggling on braille display overlay

[Eitan Isaacson]

Looks like this is related to bad permissions? This is on Android 9.

03-07 13:35:17.549  8038  8038 E AndroidRuntime: FATAL EXCEPTION: main
03-07 13:35:17.549  8038  8038 E AndroidRuntime: Process: com.googlecode.eyesfree.brailleback, PID: 8038
03-07 13:35:17.549  8038  8038 E AndroidRuntime: android.view.WindowManager$BadTokenException: Unable to add window android.view.ViewRootImpl$W@30bf068 -- permission denied for window type 2010
03-07 13:35:17.549  8038  8038 E AndroidRuntime:     at android.view.ViewRootImpl.setView(ViewRootImpl.java:822)
03-07 13:35:17.549  8038  8038 E AndroidRuntime:     at android.view.WindowManagerGlobal.addView(WindowManagerGlobal.java:356)
03-07 13:35:17.549  8038  8038 E AndroidRuntime:     at android.view.WindowManagerImpl.addView(WindowManagerImpl.java:93)
03-07 13:35:17.549  8038  8038 E AndroidRuntime:     at com.googlecode.eyesfree.widget.SimpleOverlay.show(SimpleOverlay.java:183)
03-07 13:35:17.549  8038  8038 E AndroidRuntime:     at com.googlecode.eyesfree.brailleback.OverlayDisplay$MainThreadHandler.handleShow(OverlayDisplay.java:317)
03-07 13:35:17.549  8038  8038 E AndroidRuntime:     at com.googlecode.eyesfree.brailleback.OverlayDisplay$MainThreadHandler.handleMessage(OverlayDisplay.java:299)
03-07 13:35:17.549  8038  8038 E AndroidRuntime:     at com.googlecode.eyesfree.brailleback.OverlayDisplay$MainThreadHandler.handleMessage(OverlayDisplay.java:249)
03-07 13:35:17.549  8038  8038 E AndroidRuntime:     at com.googlecode.eyesfree.utils.WeakReferenceHandler.handleMessage(WeakReferenceHandler.java:77)
03-07 13:35:17.549  8038  8038 E AndroidRuntime:     at android.os.Handler.dispatchMessage(Handler.java:106)
03-07 13:35:17.549  8038  8038 E AndroidRuntime:     at android.os.Looper.loop(Looper.java:193)
03-07 13:35:17.549  8038  8038 E AndroidRuntime:     at android.app.ActivityThread.main(ActivityThread.java:6718)
03-07 13:35:17.549  8038  8038 E AndroidRuntime:     at java.lang.reflect.Method.invoke(Native Method)
03-07 13:35:17.549  8038  8038 E AndroidRuntime:     at com.android.internal.os.RuntimeInit$MethodAndArgsCaller.run(RuntimeInit.java:493)
03-07 13:35:17.549  8038  8038 E AndroidRuntime:     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:858)