Re: Accessible animations
Re: Accessible animations
- Subject: Re: Accessible animations
- From: James Craig <email@hidden>
- Date: Sun, 10 Dec 2017 19:27:20 -0800
> On Dec 10, 2017, at 2:26 PM, Ilya Konstantinov <email@hidden>
> wrote:
>
> I have two questions about reducing animations to increase accessibility.
>
> 1) What are the guidelines for animations with accessibility?
There are not strict guidelines, but you may find this article useful for
determining common triggers and appropriate alternatives.
https://webkit.org/blog/7551/responsive-design-for-motion/
> I would think that with VoiceOver on, you'd want to disable animations
> entirely, since animations would be an entirely un-delightful delay to a
> blind user.
As others have mentioned, many VO users have some vision, and benefit from the
animations.
> How about the "Reduce Motion" setting? What kinds of animations are
> particularly problematic in what scenarios?
See article link above.
> 2) Technically, I was noticing that UIView.animate does not respect the
> "Reduce Motion" setting.
Each animation should be considered individually. It’s a judgement call rather
than a hard API switch.
Preventing all animation could result in a less usable interface.
> I was considering adding a wrapper:
> public func animationDuration(_ duration: TimeInterval) -> TimeInterval {
> return (UIAccessibilityIsReduceMotionEnabled() ||
> UIAccessibilityIsVoiceOverRunning()) ? 0 : duration
> }
>
> Am I missing some built-in functionality, or is this the preferred solution?
>
> Thanks!
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