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Re: Unexpected Voiceover Tab Order and Focussing on Hybrid App

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From: Jonathan Avila
Date: Mar 12, 2015 6:27AM

> I know that Voiceover can sometimes work from the top of the screen down when determining tab order, but there must be a reliable way of influencing that so that the tab order makes sense to Voiceover users.

The only option you have other than layout to control reading order is shouldGroupAccessibilityChildren. This property will cause VoiceOver to respect the view's grouping of child elements as a whole rather than intermixing them in the reading order with other views children.

> Also, at times, there is a requirement to move focus into an overlay panel, and then back to the original focus location when the panel closes. Getting that to work as expected is proving a challenge too.

To set focus call UIAccessibilityPostNotification with UIAccessibilityLayoutChangedNotification as the first parameter and the second with the object to set focus to.

Jonathan

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Jonathan Avila 
Chief Accessibility Officer
SSB BART Group 
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-----Original Message-----
From: <EMAIL REMOVED> [mailto: <EMAIL REMOVED> ] On Behalf Of Graham Armfield
Sent: Thursday, March 12, 2015 6:59 AM
To: WebAIM Discussion List
Subject: [WebAIM] Unexpected Voiceover Tab Order and Focussing on Hybrid App

Hi Everyone,

I'm working with a team of developers who have created an iOS hybrid app.
They want to get accessibility right, but are finding it difficult to control the tab order when Voiceover is used. It doesn't seem to follow the pattern expected.

I know that Voiceover can sometimes work from the top of the screen down when determining tab order, but there must be a reliable way of influencing that so that the tab order makes sense to Voiceover users.

Also, at times, there is a requirement to move focus into an overlay panel, and then back to the original focus location when the panel closes. Getting that to work as expected is proving a challenge too.

If anyone has any suggestions or know of any useful resources on this I'd be very grateful.

Thanks in advance

Graham Armfield



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