如何在Objective C中复制UIButton？ [英] How to duplicate a UIButton in Objective C?
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问题描述
该对象继承自NSObject。
The object inherits from NSObject.
是否有方法将其副本创建为新对象？
Is there a method to create a copy of it as a new object?
推荐答案
UIButton不符合NSCopying，因此您无法通过-copy制作副本。
UIButton does not conform to NSCopying, so you cannot make a copy via -copy.
但是，它确实符合NSCoding，因此您可以归档当前实例，然后取消归档副本。
However, it does conform to NSCoding, so you can archive the current instance, then unarchive a 'copy'.
NSData *archivedData = [NSKeyedArchiver archivedDataWithRootObject: button];
UIButton *buttonCopy = [NSKeyedUnarchiver unarchiveObjectWithData: archivedData];
之后，您必须分配归档中未转移的任何其他属性（例如，代表）必要时。
Afterwards, you'll have to assign any additional properties that weren't carried over in the archive (e.g. the delegate) as necessary.
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