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Re: Apple Accessibility API

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From: Jonathan Avila
Date: Feb 27, 2020 7:28AM

Hi Sean, any UI elements that implement the UIAccessibility protocol will have all of those properties and methods available. However, setting a value on a control with a button trait won't have any impact on VoiceOver or other assistive technology. Based on some tests I did several years ago I was able to set these properties in code even if they are hidden in the UI of Xcode -- but setting extra properties was generally ignored by VoiceOver when they were not relevant to the to the control's traits.

It is not possible to create custom traits or properties -- although traits can be created in combination such as a button that is disabled, etc. Some combinations obviously won't make sense even if you can set those combination of traits in the code.

Jonathan