初始VoiceOver选择 [英] Initial VoiceOver selection

问题描述

我正在向我的应用添加VoiceOver支持。到目前为止，还不错，但是我真的很想能够指定哪个元素是在UIAccessibilityScreenChangedNotification之后说的第一个元素。我还没有办法做到这一点。做汇总元素似乎并没有真正做到。我错过了什么吗？

I'm adding VoiceOver support to my app. So far, so good, but I'd really like to be able to specify which element is the first one spoken after a UIAccessibilityScreenChangedNotification. I haven't seen a way to do this. Making something the summary element doesn't really seem to do it. Am I missing something?

推荐答案

这始终是完全可行的。

只需按照以下方式写点东西：

Just write something along the lines of:

- (void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];

    UIAccessibilityPostNotification(UIAccessibilityScreenChangedNotification,
                                self.myFirstElement);
}
@end

此方法适用于UIAccessibilityScreenChangedNotification和UIAccessibilityLayoutChangedNotification。
更多信息： http://developer.apple.com/library/ios/#documentation/UIKit/Reference/UIAccessibility_Protocol/Introduction/Introduction.html#//apple_ref/c/data/UIAccessibilityLayoutChangedNotification
还有这里：
http ：//developer.apple.com/library/ios/featuredarticles/ViewControllerPGforiPhoneOS/Accessibility/AccessibilityfromtheViewControllersPerspective.html#//apple_ref/doc/uid/TP40007457-CH2-SW1

This works for both the UIAccessibilityScreenChangedNotification and the UIAccessibilityLayoutChangedNotification. More info: http://developer.apple.com/library/ios/#documentation/UIKit/Reference/UIAccessibility_Protocol/Introduction/Introduction.html#//apple_ref/c/data/UIAccessibilityLayoutChangedNotification And here: http://developer.apple.com/library/ios/featuredarticles/ViewControllerPGforiPhoneOS/Accessibility/AccessibilityfromtheViewControllersPerspective.html#//apple_ref/doc/uid/TP40007457-CH2-SW1

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