I'd like to have my QR code scanning app inform the user when it finds a QR code. For sighted users, this works using a label at the bottom that updates to notify the user. However, a blind user would have to tap on that label again to have it read by Voice Over. I would much prefer it to just read automatically.
我想让我的QR码扫描应用程序在找到QR码时通知用户。对于有视力的用户，这可以使用底部的标签进行更新以通知用户。但是，盲人用户必须再次点击该标签才能通过Voice Over读取。我更喜欢它只是自动阅读。
The closest I can find to this question is UIAccessibility - Read all the labels and buttons on the screen from top to down, which wasn't possible. While this doesn't bode well for my app, that was a year ago. Has Apple updated it's UIAccessibility protocol in any way to allow this?
我能找到的最接近这个问题的是UIAccessibility - 从上到下阅读屏幕上的所有标签和按钮，这是不可能的。虽然这对我的应用来说不是好兆头，那是一年前的事。 Apple是否以任何方式更新了它的UIAccessibility协议以允许此操作？
As a last resort I suppose I could play my own mp3 recording if VoiceOver is on.
作为最后的手段，我想如果启用VoiceOver，我可以播放自己的mp3录音。
Any help is greatly appreciated!
任何帮助是极大的赞赏！
2 个解决方案
#1
10
You can make VoiceOver speak any string any time you want by calling:
您可以通过以下方式随时让VoiceOver说出任何字符串：
UIAccessibilityPostNotification(UIAccessibilityAnnouncementNotification, NSLocalizedString("QR code has been detected", comment: ""))
UIAccessibilityPostNotification（UIAccessibilityAnnouncementNotification，NSLocalizedString（“已检测到QR码”，评论：“”））
There is no direct way to tell VoiceOver to speak updates of an element that VoiceOver cursor is not on. This (i.e. speaking the same content "manually") is a feasible workaround.
没有直接的方法告诉VoiceOver说出VoiceOver光标未打开的元素的更新。这（即“手动”说出相同的内容）是可行的解决方法。
#2
2
You can move VoiceOver focus to an element by using the following:
您可以使用以下方法将VoiceOver焦点移动到元素：
UIAccessibilityPostNotification(UIAccessibilityLayoutChangedNotification, elementToFocusOn)
UIAccessibilityPostNotification（UIAccessibilityLayoutChangedNotification，elementToFocusOn）
VoiceOver will then parse and read the accessibility properties associated with that element.
然后，VoiceOver将解析并读取与该元素关联的辅助功能属性。
#1
10
You can make VoiceOver speak any string any time you want by calling:
您可以通过以下方式随时让VoiceOver说出任何字符串：
UIAccessibilityPostNotification(UIAccessibilityAnnouncementNotification, NSLocalizedString("QR code has been detected", comment: ""))
UIAccessibilityPostNotification（UIAccessibilityAnnouncementNotification，NSLocalizedString（“已检测到QR码”，评论：“”））
There is no direct way to tell VoiceOver to speak updates of an element that VoiceOver cursor is not on. This (i.e. speaking the same content "manually") is a feasible workaround.
没有直接的方法告诉VoiceOver说出VoiceOver光标未打开的元素的更新。这（即“手动”说出相同的内容）是可行的解决方法。
#2
2
You can move VoiceOver focus to an element by using the following:
您可以使用以下方法将VoiceOver焦点移动到元素：
UIAccessibilityPostNotification(UIAccessibilityLayoutChangedNotification, elementToFocusOn)
UIAccessibilityPostNotification（UIAccessibilityLayoutChangedNotification，elementToFocusOn）
VoiceOver will then parse and read the accessibility properties associated with that element.
然后，VoiceOver将解析并读取与该元素关联的辅助功能属性。