iPad兼容。 UIBarButtonItem有一个UIToolbarTextButton类型的未记录视图。咦？ [英] iPad. UIBarButtonItem has an undocumented view of type UIToolbarTextButton. Huh?

问题描述

我有一个iPad应用程序，我有一个视图控制器，它是许多UIGestureRecognizers的UIGestureRecognizerDelegate。我已经实现了以下UIGestureRecognizerDelegate方法：

I have an iPad app where I have a view controller that is the UIGestureRecognizerDelegate for a number of UIGestureRecognizers. I have implemented the following method of UIGestureRecognizerDelegate:

- (BOOL)gestureRecognizer:(UIGestureRecognizer *)gestureRecognizer shouldReceiveTouch:(UITouch *)touch {


 // Double tapping anywhere on the screen hides/shows the toolbar
 if ([gestureRecognizer isKindOfClass:[UITapGestureRecognizer class]] == YES) {

      if (touch.tapCount == 2) {

           self.toolbar.hidden = self.toolbar.isHidden ? NO : YES;

      } // if (touch.tapCount == 2)

 } // if ([gestureRecognizer isKindOfClass:[UITapGestureRecognizer class]] == YES)


 // All gestures are ignored unless they happen on the fullscreen EAGLView
 if ([touch.view isKindOfClass:[EAGLView class]] == NO) {

      return NO;

 } // if ([touch.view isKindOfClass:[EAGLView class]] == NO)


 return YES;

}

我的设置是全屏在EAGLView上面有一个UIToolbar的EAGLView。工具栏上有一个UIBarButtonItem。这里的想法是双击任何地方切换工具栏的外观。所有其他手势必须出现在EAGLView上。

My setup is a fullscreen EAGLView with a UIToolbar atop the EAGLView. There is a UIBarButtonItem on the toolbar. The idea here is that double-tapping anywhere toggles the appearance of the toolbar. All other gestures must occur on the EAGLView.

我的问题是直接点击UIBarButtonItem显示touch.view是UIView子类UIToolbarTextButton，它是未记录的，无法进行内省。

My problem is that taps directly on the UIBarButtonItem show touch.view to be the UIView subclass UIToolbarTextButton which is undocumented and can't be introspected.

嗯？

有人可以建议一个解决方案，最好是使用某种形式的内省善吗？

Can someone suggest a work around, preferably that uses introspective goodness of some form?

谢谢，

Doug

Thanks,
Doug

谢谢，

Doug

推荐答案

您可以计算 .superview 重复直到你到达UIToolbar，EAGLView或 nil 。

You can compute the .superview repeatedly until you reach a UIToolbar, EAGLView or nil.

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