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#import
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//ÔËÐÐʱµÄ¹ØÁª¶ÔÏ󣬶¯Ì¬Ìí¼ÓÊôÐÔ
const void *URLStringKey = URLStringKey;
//set·½·¨
- (void)setUrlStr:(NSString *)urlStr
{
objc_setAssociatedObject(self, URLStringKey, urlStr, OBJC_ASSOCIATION_COPY_NONATOMIC);
}
//get·½·¨
- (NSString *)urlStr
{
return objc_getAssociatedObject(self, URLStringKey);
}
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