处理UILabel中的触摸事件并将其挂接到IBAction [英] Handling Touch Event in UILabel and hooking it up to an IBAction

问题描述

好的，所以我在界面构建器中创建了一个 UILabel ，它显示了一些默认文本tap to begin。

Ok, so I have a UILabel created in interface builder that displays some some default text of "tap to begin".

当用户点击 UILabel 时，我希望它触发IBAction方法：
- （IBAction）next; 更新标签上的文字以说出新内容。

如果允许我简单地拖动连接，这将非常方便我的方法到我的标签，然后选择内部修饰，如同一个按钮。但是，唉，没有雪茄。

When the user taps the UILabel I want it to trigger an IBAction method: -(IBAction)next; which updates the text on the label to say something new.
It would be really convenient if this allowed me to simply drag a connection from my method to my label and then select touch up inside, as with a button. but alas, no cigar.

所以无论如何，我想我的问题是，我是否必须继承 UILabel 以使其工作？或者是否有某种方法可以在标签上拖动按钮，但使其为0％不透明。或者是否有一个我想念的更简单的解决方案？

so anyways, I guess my question is, am I going to have to subclass UILabel to get this to work? Or is there some way I can drag a button over the label, but make it 0% opaque. Or is there a simpler solution I'm missing?

推荐答案

检查出来：

UILabel *label = ...
label.userInteractionEnabled = YES;
UITapGestureRecognizer *tapGesture =
      [[UITapGestureRecognizer alloc] initWithTarget:self 
                                              action:@selector(labelTap)];
[label addGestureRecognizer:tapGesture];

诀窍是启用用户互动。

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