Can I tell iOS when it's in VoiceOver mode to read aloud a specific UILabel's text when I change it?

I've got a label that's going to change to say something silly like "the sky is now blue" and I'd like to have VoiceOver read that new text aloud without a semi-blind user needing to press on the 开发者_StackOverflowlabel.

Is that possible however, to direct VoiceOver to read a specific item when & where I want?

Thanks.

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See this answer: iPhone - make VoiceOver announce label text change

In short, you can tell iOS to speak text aloud when in voiceover mode by sending notifications, like:

UIAccessibilityPostNotification(UIAccessibilityAnnouncementNotification, @"the sky is now blue");

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I'm still trying to figure out how to "focus" on a particular UIAccessibilityElement (i.e. make it as if they had tapped it), but I think in your case you could use UIAccessibilityAnnouncementNotification to speak arbitrary text.