我创建了一个UIAccessibilityElement的示例，以便提供一组自定义操作以及一些附加信息（即accessibilityLabel + accessibilityHint）
问题是VoiceOver不会宣布自定义操作的存在。它们存在，它们工作，但不会被宣布。而且，自定义操作的提示也不会被宣布。
有什么想法吗？
生成元素的代码如下：

private lazy var accessibilityOverviewElement: UIAccessibilityElement = {
    let element = UIAccessibilityElement(accessibilityContainer: self)
    element.accessibilityLabel = viewModel.accessibilityOverviewTitle
    element.accessibilityHint = viewModel.accessibilityOverviewHint
    element.isAccessibilityElement = true

    let close = UIAccessibilityCustomAction(
        name: viewModel.accessibilityCloseActionTitle,
        target: self,
        selector: #selector(self.accessibilityDidClose))
    close.accessibilityHint = viewModel.accessibilityCloseActionHint

    let expand = UIAccessibilityCustomAction(
        name: viewModel.accessibilityExpandActionTitle,
        target: self,
        selector: #selector(self.accessibilityDidExpand))
    expand.accessibilityHint = viewModel.accessibilityExpandActionHint

    element.accessibilityCustomActions = [close, expand]
    return element
}()

我计算元素的框架viewDidLayoutSubviews()

override func viewDidLayoutSubviews() {
    super.viewDidLayoutSubviews()
    var frame = view.bounds
    frame.size.height = SleepAidMinifiedPlayerViewController.defaultHeight
    accessibilityOverviewElement.accessibilityFrameInContainerSpace = frame
}

最后，我需要能够启用/禁用辅助功能，因为此视图控制器从底部滑动并隐藏，但它没有从视图层次结构中完全删除（因此VoiceOver仍然关注其元素）

func setAccessibility(enabled isEnabled: Bool) {
    view.accessibilityElements = isEnabled ? [accessibilityOverviewElement, /* + other accessible elements*/].compactMap { $0 } : []
}

谢谢你！