子视图控制器中的UIAccessibilityContainer？ [英] UIAccessibilityContainer in child view controllers?

问题描述

我有一个父级 UIViewController ，向其中添加了四个子级视图控制器。我正在尝试管理所有这些控制器的可访问性。我有一个 status 枚举，该枚举跟踪屏幕上可见哪些孩子，所以当更改时，我正在更新 accessibilityElementsHidden 个孩子，并发送 LayoutChanged 通知。

I have a parent UIViewController to which I add four child view controllers. I’m trying to manage accessibility throughout those controllers. I have a status enum which keeps track of which of those children are visible on-screen, so when that changes, I’m updating the accessibilityElementsHidden of the children as appropriate, and sending a LayoutChanged notification.

我的问题与在父视图控制器和每个子视图控制器内部实现 UIAccessibilityContainer 协议。父母需要知道这些元素应该以什么顺序显示，等等，每个孩子都有自己的元素，这些元素也需要特定的顺序。

My question relates to implementing the UIAccessibilityContainer protocol in both the parent view controller, and inside each of the child view controllers. The parent needs to know in which order those elements should be presented, etc., and each child has its own elements that also need specific ordering.

子类， UIAccessibilityContainer 方法（ accessibilityElementCount 等）从未被调用，因此看起来就像在忽略它们，

It appears that inside the children, the UIAccessibilityContainer methods (accessibilityElementCount et al), are never called, so it looks like it’s ignoring them, which leaves my elements out of order and messy.

这是应该的样子吗？

推荐答案

是的，没错，UIAccessibilityContainer所做的就是告诉VoiceOver该元素从可访问性的角度来看，这是最内在的元素。

Yes, that is correct, what UIAccessibilityContainer is doing is telling VoiceOver that that element is the innermost element from an accessibility perspective.

能否从UI角度提供更多关于尝试执行的操作的上下文，也许有更好的方法实现这一目标

Can you give a bit more context as to what you are trying to do from a UI perspective, there might be a better way to achieve this

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