[Interest] Crash in iOS 12 when Accessibility is ON
maitai at virtual-winds.org
Fri Oct 26 09:00:58 CEST 2018
There has been already 2 bug reports for that (QTBUG-70909 and
QTBUG-70683), but it is not yet fixed and I am looking for a workaround,
since lot of my users are complaining.
To make a long story short, iOS 12 is crashing in UIAccessibility
_axuiElementForNotificationData when for instance Speak Screen is ON.
This is because Qt doesn't check that the list of Accessibility items is
empty, as I understood.
A workaround has been proposed, which consists in putting a non empty
title to the main window. That is indeed OK for a QML application, but
our app is still pure QWidget-based. Putting a title in MainWindow duly
fixed the crash at startup, but now it only crashes later, whenever the
user triggers a QAction from a QMenu. It crashes at the same place in
I have tried many things with no success, including:
- Add some setAccessibilityName etc in some relevant objects,
- In qappdelegate settings some flags supposed to ignore Accessibility,
such as [aView setIsAccessibilityElement:NO]; and [aView
- I even tried to override some QIOS functions but did not succeed.
Someone suggested to just add a dummy Accessibility item, so the list
won't be empty. I have no idea how to do that.
I have of course tried 5.9.7 and 5.11.2, no luck.
If someone has some advices or ideas...
More information about the Interest