You might impress upon the developer that with VoiceOver, we use a two-step 
process: we first give the button focus followed by a double tap anywhere on 
the screen which is acted on the button with focus.

Direct the developer to the link Richard provided. iOS already has the hooks in 
place to make accessible app coding easier.

Alan Lemly

Sent from my iPhone

> On Oct 10, 2015, at 10:15 AM, Richard Turner <[email protected]> 
> wrote:
> 
> Yes, if you are not using VoiceOver, you just tap once to activate a button.
> With VoiceOver, the single tap merely selects it so the second tap is 
> required to activate the button.
> 
> Here is the link to the developer web site on accessibility.  I
> 'd suggest sending them this link:
> https://developer.apple.com/accessibility/
> 
> Richard
> 
> 
> -----Original Message-----
> From: [email protected] [mailto:[email protected]] On Behalf Of 
> Jenifer Barr
> Sent: Saturday, October 10, 2015 8:13 AM
> To: viphone <[email protected]>
> Subject: Question, VO gestures vs. regular gestures.
> 
> Hi all.
> So, I'm trying to convince an ap developer that vo gestures are
> different from regular gestures.  I'm trying to tell them that double
> tapping on a button doesn't work with VO.  They're telling me that the
> correct gesture is a single tap, not a double tap.  So, is a single
> tap a regular gesture that a sighted person would use to activate a
> button or something?
> Thanks for any help you can give.  The developer is the creator of the
> "next episode" ap.  The button is "favorites" wich would allow you to
> add a show to your "watched" or "notify" list.
> Jen
> 
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