用runtime归档、解档、copy

1.我定义一个TestModel

////  TestModel.h//  runTime////  Created by apple on 16/5/27.//  Copyright © 2016年 李重阳. All rights reserved.//#import <Foundation/Foundation.h>#import <objc/runtime.h>@interface TestModel : NSObject<NSCoding,NSCopying>@property (nonatomic,assign) float height;@property (nonatomic,strong) NSArray * dataArr;@property (nonatomic,retain) NSArray * dataArr1;@property (nonatomic,copy) NSString * name;@property (nonatomic,retain) NSString * name2;- (instancetype)initWithDict:(NSDictionary *)dict;@end

////  TestModel.m//  runTime////  Created by apple on 16/5/27.//  Copyright © 2016年 李重阳. All rights reserved.//#import "TestModel.h"@implementation TestModel- (instancetype)initWithDict:(NSDictionary *)dict {    if (self = [super init]) {        //1.获取类的属性及属性对应的类型        NSMutableArray * keys = [NSMutableArray array];        NSMutableArray * attributes = [NSMutableArray array];        //获得底层的属性列表        unsigned int outCount = 0;        objc_property_t *propertyList = class_copyPropertyList([self class], &outCount);        for (int i = 0 ; i<outCount; i++) {            objc_property_t property = propertyList[i];            const char *key = property_getName(property);            const char *attribute = property_getAttributes(property);            [keys addObject:[NSString stringWithCString:key encoding:NSUTF8StringEncoding]];            [attributes addObject:[NSString stringWithCString:attribute encoding:NSUTF8StringEncoding]];        }        free(propertyList);        //通过keys 来赋值        for (NSString * key in keys) {            if (dict[key]) {                [self setValue:dict[key] forKey:key];            }        }        free(ivars);    }    return self;}//解档/* * 通过归档来初始化，也就是把这个归档来解出来 **/- (id)initWithCoder:(NSCoder *)aDecoder {    if (self = [super init]) {        unsigned int outCount = 0;        Ivar * ivars = class_copyIvarList([self class], &outCount);        for (int i = 0; i<outCount; i++) {            Ivar ivar = ivars[i];            NSString * key = [NSString stringWithUTF8String:ivar_getName(ivar)];            [self setValue:[aDecoder decodeObjectForKey:key] forKey:key];        }        free(ivars);    }    return self;}/* * 归档 **/- (void)encodeWithCoder:(NSCoder *)aCoder {    unsigned int outCount;    Ivar * ivars = class_copyIvarList([self class], &outCount);    for (int i = 0; i < outCount; i ++) {        Ivar ivar = ivars[i];        NSString * key = [NSString stringWithUTF8String:ivar_getName(ivar)];        [aCoder encodeObject:[self valueForKey:key] forKey:key];    }}/*实现copy 协议**/- (id)copyWithZone:(NSZone *)zone {    id copy = [[[self class]allocWithZone:zone]init];    unsigned int outCount;    Ivar * ivars = class_copyIvarList([self class], &outCount);    for (int i = 0; i < outCount; i ++) {        Ivar ivar = ivars[i];        NSString * key = [NSString stringWithUTF8String:ivar_getName(ivar)];        id value = [self valueForKey:key];        [copy setValue:value forKey:key];    }    free(ivars);    return copy;}@end