CODEWITHSUNDEEP
iosiphoneaccessibilityvoiceover
Mihai Stan
Mihai Stan

Reputation: 153

UIAccessibilityVoiceOverStatusDidChangeNotification method gets called multiple times

I'm adding my VC as an observer for the UIAccessibilityVoiceOverStatusDidChangeNotification notification in viewWillAppear. However, this notification gets called twice when I turn VoiceOver on/off.

Is this normal behaviour? Does VoiceOver have any status other than running or not running?

Upvotes: 1

Views: 820

Answers (1)

XLE_22
XLE_22

Reputation: 5671

...this notification gets called twice when I turn VoiceOver on/off.

On my side, when Iā€™m listening to the .voiceOverStatusDidChangeNotification event, I receive 2 notifications in case of a connection and 3 notifications in case of a disconnection.šŸ˜° enter image description here

Is this normal behaviour?

That's definitely not normal āŸ¹ I wrote a Developer Technical Support Incident (no 731230503) for this problem and here's the answer from Apple:

We cannot discuss the architecture of the system but I can tell you this a bug [...] Your application should receive only one notification [...] With our currently shipping configurations there is not [a way to get only one notification per event].

I submitted a bug report entitled The 'VoiceOver Status Did Change Notification' is sent many times for one event with the reference FB7628293.

Does VoiceOver have any status other than running or not running?

No, there are just these 2 informations about the VoiceOver status.
You should receive only one notification per event and that's clearly not the case unfortunately.

Now, you know why UIAccessibilityVoiceOverStatusDidChangeNotification method gets called multiple times... still in iOS 13 and it won't change until this bug is fixed by Apple. šŸ˜„

Upvotes: 4

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