UIAccessibilityContainer dynamically update protocol methods

Question

I have a custom UIView which I have implemented the informal protocol UIAccessibilityContainer.

My accessibility elements for this UIView differs depending on the state of the view. In my case it's a player, so when it's playing it has a stop button and when it's stopped it has a play button.

Therefore I dynamically need to update the accessibilityElements array when the state of my view changes.

When the view is initially setup it works as expected but when I need to update the accessibilityElements I don't know how to go about it, and if there's a method to tell "accessibility" that the elements have been updated?

Answer 1

Indeed, there is. You'll want to post a "Layout Changed" notification:

UIAccessibilityPostNotification(UIAccessibilityLayoutChangedNotification, elementToFocusOrNil);