问题描述
我希望我的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。
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.
我能找到的最接近这个问题的是
，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？
The closest I can find to this question isUIAccessibility - 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?
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。
As a last resort I suppose I could play my own mp3 recording if VoiceOver is on.
非常感谢任何帮助！
推荐答案
你可以让VoiceOver说任何字符串您想要的时间通过调用：
You can make VoiceOver speak any string any time you want by calling:
UIAccessibilityPostNotification（UIAccessibilityAnnouncementNotification，NSLocalizedString（已检测到QR代码，评论：））
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）是一种可行的解决方法。
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.
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