.h
#import <Foundation/Foundation.h>
@interface NSObject (MyCatgory)
@property (nonatomic, strong) NSString *propertyName;
@end
.m
#import "NSObject+PropertyName.h"
#import <objc/runtime.h>
static const void *PropertyName = &PropertyName;
@implementation NSObject (navigationBar)
@dynamic propertyName;
- (NSString *)propertyName {
return objc_getAssociatedObject(self, PropertyName);
}
- (void)setPropertyName:(NSString *)propertyName {
objc_setAssociatedObject(self, PropertyName, propertyName, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
}
@end
使用
NSObject *obj = [[NSObject alloc] init];
obj.propertyName = @"11";
NSLog(@"%@",obj.propertyName);
