1 #import <Foundation/Foundation.h>
 2 
 3 @protocol PrototypeCopyProtocol <NSObject>
 4 
 5 @required
 6 
 7 /**
 8  复制自己
 9 
10  @return 返回一个拷贝的对象
11  */
12 - (id)clone;
13 
14 @end

 1 #import <Foundation/Foundation.h>
 2 #import "PrototypeCopyProtocol.h"
 3 
 4 @interface Student : NSObject <PrototypeCopyProtocol>
 5 
 6 @property (nonatomic, strong) NSString *name;
 7 @property (nonatomic, strong) NSString *age;
 8 @property (nonatomic, strong) NSString *score;
 9 @property (nonatomic, strong) NSString *address;
10 
11 #pragma mark - PrototypeCopyProtocol method
12 - (id)clone;
13 
14 @end

 1 #import "Student.h"
 2 
 3 @implementation Student
 4 
 5 - (id)clone {
 6     
 7     Student *stu = [[[self class] alloc] init];
 8     
 9     stu.name    = self.name;
10     stu.age     = self.age;
11     stu.score   = self.score;
12     stu.address = self.address;
13     
14     return stu;
15 }
16 
17 @end

 1 - (void)viewDidLoad {
 2     [super viewDidLoad];
 3     
 4     //创建第一个学生实例
 5     Student *stu1 = [[Student alloc] init];
 6     
 7     stu1.name  = @"Jackey";
 8     stu1.age   = @"18";
 9     stu1.score = @"90";
10     stu1.score = @"重庆";
11     
12     //创建第二个学生实例
13     Student *stu2 = [stu1 clone];
14     
15     stu2.name = @"Franky";
16     
17 }