多级UIView（XIB类型）不触发UITapGestureRecognizer

Question

I want to dynamically load some UIView s, they're somewhat complex, so I spend few hours made .xib files.

Now let's say I have a finalView , which as root/container view presented on screen. Then I addSubView(subViewLvOne) , which also can be a container view. At last subViewOne.addSubView(subViewLvTwo) , now we got everything need.

On screen it's perfect, exactly the result I want to show. Two inside One , One inside final .

But I can not get any click event with One and Two . It seems final got all the events, but since many small subviews inside it, of course I want them to got their own event.

I've simplified my real situation, avoid many irrelevant details, hope now the description is clear.

Any suggestion is welcome, even like "use *** is better than .xib". I myself, already start doubting the direction of this whole solution.

Answer 1

After about 2 hours, I got two tips:

1. the root UIView in .xib file, must be large enough.

I have a UIView whose width is 200, and a UIButton inside it. In runtime, I change the the width constraint of UIButton to fill the screen, obviously greater than 200. Then something ridiculous happens: only part of the button can trigger click event. In this case, the width of root UIView , ie 200 pixel.

2. when init(frame:CGRect) , make width and height value large enough.

At first, I copy CGRect.Zero from some examples online. My colleague found this will block click event. You can just give a 1000-width and 1000-height, the outside area won't really trigger click event, meanwhile the UIView can be tapped correctly.

That's all.