无法弄清楚从哪里开始子类化 UIControl！
我想创建自己的控件，其中包含几个 UILabels 和几个 UITextFields。问题是我不知道从哪里开始！我是否直接子类化 UIControl，然后创建子视图并将它们添加到 init: 中的主视图中？或者我使用layoutSubviews？我需要重写drawRect:吗？
我习惯于创建“控制器”类来处理添加子视图，但如果我子类化 UIControl 那么我不确定要重写哪些方法来设置！
我以前从未这样做过，所以我真的很感激一些建议！
干杯!
I want to create my own control that will consist of several UILabels and a couple of UITextFields. The problem is I'm not sure where to start! Do I directly subclass UIControl, then create my subviews and add them to the main view in init:? Or do I use layoutSubviews? And will I need to override drawRect:?
I'm used to creating "Controller" classes that will handle adding subviews but if I subclass UIControl then I'm not sure what methods to override to set things up!
I've never done this before so I'd really appreciate a few pointers!
Cheers!
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您确定需要
UIControl吗？UIControl类适用于相当简单、通常可重用的控件，例如需要支持有限事件集（例如“触摸”或“值更改”）的按钮和文本字段。如果您只是想创建一种将多个视图分组在一起的方法，则应该使用UIView。无论哪种情况，您都应该执行以下操作：
创建子视图并在
-initWithFrame:中设置其大部分属性。将它们保存在实例变量中并将它们添加为 self 的子视图。在
-layoutSubviews中设置它们的框架，并根据self.bounds计算它们。每当您的视图更改大小时，包括在-initWithFrame:之后，都会调用此函数。除非您需要使用 Core Graphics 函数进行自定义绘图，否则您不需要实现
-drawRect:。Are you sure you want
UIControl? TheUIControlclass is intended for fairly simple, typically reusable controls like buttons and text fields that need to support a limited set of events (like "touched" or "value changed"). If you're just trying to create a way to group several views together, you should useUIViewinstead.In either case, here's what you should do:
Create your subviews and set most of their properties in
-initWithFrame:. Save them in instance variables and add them as subviews of self.Set their frames in
-layoutSubviews, calculating them based onself.bounds. This will be called any time your view changes size, including after-initWithFrame:.You should not need to implement
-drawRect:unless you need to do custom drawing with Core Graphics functions.