以编程方式设置 UIView 的自定义类？
我以编程方式将 UIView 添加到超级视图，并且我想向 UIView 添加一个目标，以便能够在触摸时执行任何操作。为了添加目标，我需要将 UIView 的自定义类设置为 UIControl。通常这是在 IB 中完成的，但由于我是以编程方式进行的，所以我无法以这种方式进行设置。我尝试像这样设置 UIControl，但它不起作用。
subView.class = UIControl;
这样做的正确方法是什么？
I am adding a UIView programmatically to superview, and i would like to add a target to the UIView to be able to perform any actions on touch. In order to add a target i need to set the custom class of the UIView to UIControl. Normally thats done in IB, but since im doing it programmatically i can't set it up that way. I tried to set UIControl like this, but its not working.
subView.class = UIControl;
Whats the proper way of doing that?
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UIView 的实例没有目标。如果您需要目标/操作机制，请创建 UIControl 的实例。否则，请使用手势识别器根据你的观点。
An instance of UIView does not have a target. If you want a target/action mechanism, create an instance of UIControl. Otherwise, use a gesture recognizer on your view.
有时，在 IB 中将 UIView 的类设置为其他内容（例如 MyView）的原因是，您想要创建一个 MyView，但 IB 的库中没有 MyView，因此您不能将其拖到视图中。因此，您拖入一个 UIView 并将其类更改为 MyView。
当您在代码中实例化对象而不是从 .xib 加载它时，这根本没有必要。在代码中，您知道要实例化哪个类，因此您只需实例化该类：
如果您希望子视图成为 UIButton，则实例化它：
不要乱搞 isa-swizzling，至少现在不要。如果你问这个问题（问这个问题没有错），你应该将 swizzling 视为一门黑暗艺术，你可能会在未来的某个时候接触到它。
The reason you sometimes set the class of a UIView to something else, say MyView, in IB is that you want to create a MyView, but IB doesn't have MyView in its library so you can't just drag one into your view. So, you drag in a UIView instead and change its class to MyView.
That's not necessary at all when you're instantiating an object in code rather than loading it from a .xib. In code, you know what class you want to instantiate, so you just instantiate that class:
If you want subview to be a UIButton, you instantiate that instead:
Don't mess around with isa-swizzling, at least not now. If you're asking this question (and there's nothing wrong with asking this question) you should treat swizzling as a dark art that you might get to at some point in the future.
您有两个选择：
UIControl，它是UIView子类，此类具有与视图相同的行为，但您可以使用选择器
addTarget:action:forControlEvents:来控制其事件，或者...
UIGestureRecognizer来控制与您的交互看法。
You have two options:
UIControlwhich is aUIViewsubclass, this class have the same behavior of a view but you can use theselector
addTarget:action:forControlEvents:to control its events,or...
UIGestureRecognizerto control the interaction with yourview.