透明视图上的 UITapGestureRecognizer
我有一个带有视图的树，其中最高级别的视图是透明的，并且包含图像或标签（具有透明背景）。
将 UITapGestureRecognizer 附加到此视图时，我只会收到有关包含图像的视图的通知。
此外，如果我将视图留空，则仅当背景颜色与 [UIColor clearColor] 不同时我才会收到事件。
我已经完成了转储，整个视图树都有 userInteractionEnable = YES。
如何让 UITapGesturerRecognizer 在透明背景的视图上工作？
已解决
问题不是我想的那样。透明视图位于滚动视图中，并且在初始化期间它们位于视图的可见区域之外。那些在可见区域内的工作正常。
I have a tree with views where the highest level view is transparent and contains either an image or a label (with a transparent background).
When attaching a UITapGestureRecognizer to this view, I only get notifications on the views which contain images.
Also, if I leave the view empty, then I get events only when the background color is different than [UIColor clearColor].
I have done a dump and the entire view tree has userInteractionEnable = YES.
How can I get the UITapGesturerRecognizer to work on the view with a transparent background?
Solved
Problem was not what I thought. The transparent views were in a scroll view and during initialization they were outside of the view's visible area. Those within the visible area work ok.
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这里可以大胆猜测，但如果您在视图中包含 1x1 像素图像，那么该视图是否符合手势条件？
另一个同样疯狂的猜测是向视图添加透明图像并尝试。
Wild guesses here, but if you include a 1x1 pixel image in the view, would that view then qualify for gestures?
Another equally wild guess would be to add a transparent image to the view and try that.
尝试为视图提供近乎透明的背景颜色，例如
[UIColor colorWithWhite:0 alpha:0.01]。Try giving the view a nearly-transparent background color, like
[UIColor colorWithWhite:0 alpha:0.01].尝试将背景颜色设置为除clearColor之外的任何颜色并将alpha属性设置为0.0；
Try setting the background color to whatever except the clearColor and setting the alpha property to 0.0;