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UITextView accessibility is unique
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UITextView_and_accessibility.md

UITextView and Accessibility

isAccessibilityElement

isAccessibilityElement は Voice Over などが稼働して、UIKit.axbundleが読み込まれて始めて true になる。

  • See also:
    • -[UITextViewAccessibility isAccessibilityElement] (UIKit.axbundle)

isEditable

UITextView の isEditable が false の場合 (isEditable か、isSelectable が false)、UITextView はラベルのように振舞う。 その際、ローター用にパラグラフごとの Accessibility Element が生成されて、UITextViewは Accessibility Container になる。 その結果、isAccessibilityElement が false であっても、Voice Over の対象になる。

  • See also:
    • -[UITextViewAccessibility accessibilityElements] (UIKit.axbundle)
    • -[UITextViewAccessibility _accessibilityTextViewShouldBreakUpParagraphs] (UIKit.axbundle)
    • -[NSObject _accessibilityTextViewShouldBreakUpParagraphs] (UIAccessibility.framework)
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