检测 UILabel 上的触摸事件
我有一个 UILabel，我正在以编程方式将其添加到我的主视图中。然后，我添加一个手势识别器来获取标签上的触摸事件：
UITapGestureRecognizer *recog = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(didTouchNotification)];
[notification addGestureRecognizer:recog];
[recog release];
但是，触摸标签时不会触发任何内容。我记录了所有子视图以确保标签位于顶部，确实如此。我可以让识别器工作的唯一方法是将其添加到基础视图中，但这并没有多大帮助。有谁知道为什么这个标签表现得如此“透明”？
节日快乐！
I have a UILabel that I am adding programmatically to my main view. I then add a gesture recognizer to get touch events on the label:
UITapGestureRecognizer *recog = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(didTouchNotification)];
[notification addGestureRecognizer:recog];
[recog release];
However, nothing fires when the label is touched. I logged all subviews to make sure the label was on top, and it is. The only way I can get the recognizer to work is if I add it to the underlying view, but that isn't much help. Does anyone know why this label is behaving so "transparently"?
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UILabel的userInteractionEnabled属性默认设置为NO，因此它不会接收触摸事件，手势识别器也不起作用。尝试为您的标签启用用户交互：UILabelhas itsuserInteractionEnabledproperty set toNOby default so it does not receive touch events and gesture recognizer does not work. Try to enable user interaction for your label: