如何用NSString标签识别视图？ [英] How to identify view with NSString tag?

问题描述

view.tag仅存储NSInteger值。

view.tag is only stored NSInteger Value.

那么，如何识别具有NSString值的每个视图？

so, how to identify each view with NSString Value?

不可用？

一些例子：

view0.stringTag = @"basic";

view1.stringTag = @"advanced";

推荐答案

没有 stringTag 属性 UIView 。如果您需要执行此类操作，可以在 UIView 上使用类别，并将标记存储在关联对象中：

There's no stringTag property on UIView. If you need to do this kind of thing you can use a category on UIView and store the tag in an associated object:

@interface UIView (StringTagAdditions)
@property (nonatomic, copy) NSString *stringTag;
@end

@implementation UIView (StringTagAdditions)
static NSString *kStringTagKey = @"StringTagKey";
- (NSString *)stringTag
{
    return objc_getAssociatedObject(self, kStringTagKey);
}
- (void)setStringTag:(NSString *)stringTag
{
    objc_setAssociatedObject(self, kStringTagKey, stringTag, OBJC_ASSOCIATION_COPY_NONATOMIC);
}
@end

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