1 #import <Foundation/Foundation.h>
2 #import <objc/runtime.h>
3
4 @interface NSObject (CategoryWithProperty)
5
6 /**
7 * 要在Category中扩展的属性
8 */
9 @property (nonatomic, strong) NSObject *property;
10
11 @end
12
13 @implementation NSObject (CategoryWithProperty)
14
15 - (NSObject *)property {
16 return objc_getAssociatedObject(self, @selector(property));
17 }
18
19 - (void)setProperty:(NSObject *)value {
20 objc_setAssociatedObject(self, @selector(property), value, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
21 }
22
23 @end
