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Creating an Accessible Reading Experience

The styling and layout of text is a hallmark feature of an outstanding reading experience. Technologies such as CoreText and TextKit give you the tools you need to create a great text layout. Learn how to make an equally great accessible experience for VoiceOver by adopting the accessibility reading content protocol, adding automatic page turning, and customizing speech output.

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  • For custom views set isAccessibilityElement = true

  • Enable Accessible Text Content by adopting UIAccessibilityReadingContent

    • In accessibilityLineNumber(for point: CGPoint) -> Int use hit testing to identify subviews

    • In accessibilityContent(forLineNumber: Int) -> String? return the accessibilityLabel for the subview matching line number

    • In accessibilityFrame(forLineNumber: Int) -> CGRect return the accessibilityFrame for the subview matching line number

    • In accessibilityPageContent() -> String? return the concatenated accessibility labels for all subviews

  • Enable Automatic Page Turn by

    • setting view.accessibilityTraits = UIAccessibilityTraits.causePageTurn on your page view

    • implementing accessibilityScroll(_ direction: UIAccessibilityScrollDirection) -> Bool (lets voice over turn pages)

  • Customizing Speech by adopting the protocol UIAccessibilityReadingContent

    • customize language by setting NSAttributedString.Key.accessibilitySpeechLanguage

    • customize pitch by setting NSAttributedString.Key.accessibilitySpeechPitch

Missing anything? Corrections? Contributions are welcome!

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Blackjacx
Blackjacx
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