1.存储的model

#import <Foundation/Foundation.h>
#import "MJExtension.h"

@interface UserModel : NSObject
// 用户信息
@property (nonatomic, copy) NSString *name;//姓名
@property (nonatomic, copy) NSString *gender;//性别
@property (nonatomic, copy) NSString *age;//年龄
@property (nonatomic, copy) NSString *height;//身高

@end

#import "UserModel.h"
@implementation UserModel
MJCodingImplementation; //自定义对象归档

@end

2.Manager

#import <Foundation/Foundation.h>
#import "UserModel.h"

@interface UserManager : NSObject

// 单利
+ (instancetype)manager;
// 用户信息
@property (nonatomic, strong) UserModel *userModel;
// 存储用户字典数据
- (void)updateUserInfo:(id)userInfo;
// 更改用户属性值
- (void)updateValue:(id)value forKey:(NSString *)key;
@end


#import "UserManager.h"
#import "YYCache.h"
#import "UserModel.h"
#import "MJExtension.h"

@interface UserManager()
@property(nonatomic,strong) YYCache *userCache;//YYCache对象
@property(nonatomic,strong) NSMutableDictionary *userInfoDict;//用户信息字典
@end

@implementation UserManager

#pragma mark - 假懒加载
- (NSMutableDictionary *)userInfoDict {
    if (!_userInfoDict) {
        id value = [self.userCache objectForKey:@"userInfo"];
        NSMutableDictionary *userInfoDict = [NSMutableDictionary dictionaryWithDictionary:(NSDictionary *)value];
        return userInfoDict;
    }
    return _userInfoDict;
}

- (UserModel *)userModel {
    if (!_userModel) {
        if (self.userInfoDict) {
            UserModel *employeeModel = [UserModel mj_objectWithKeyValues:self.userInfoDict];
            return employeeModel;
        }
    }
    return _userModel;
}

#pragma mark - 单利 - 创建管理对象
+ (instancetype)manager {
    static UserManager *instance = nil;
    static dispatch_once_t onceToken;
    dispatch_once(&onceToken, ^{
        instance = [[UserManager alloc] init];
    });
    return instance;
}

- (instancetype)init {
    self = [super init];
    if (self) {
        self.userCache = [[YYCache alloc] initWithName:@"app.userInfo"];
    }
    return self;
}

#pragma mark - 存储用户字典数据
- (void)updateUserInfo:(id)userInfo {
    [self.userCache setObject:userInfo forKey:@"userInfo"];
}

#pragma mark - 更改用户属性值
- (void)updateValue:(id)value forKey:(NSString *)key{
    
    NSMutableDictionary *tempDic = [NSMutableDictionary dictionaryWithDictionary:self.userInfoDict];
    [tempDic setValue:value forKey:key];
    [self updateUserInfo:tempDic];
}

3.使用

#import "YYCacheViewController.h"
#import "UserManager.h"

#define UserModel [UserManager manager].userModel
#define UserInfoManager [UserManager manager]


@interface YYCacheViewController ()

@end

@implementation YYCacheViewController


- (void)viewDidLoad {
    [super viewDidLoad];
    
    NSLog(@"######%@",@"存储地址");
    NSLog(@"%@",NSHomeDirectory());
    
    NSLog(@"%@",@"已经存储的信息");
    NSLog(@"%@",UserModel.name);
    NSLog(@"%@",UserModel.gender);
    NSLog(@"%@",UserModel.age);
    
    NSDictionary *userInfo = @{@"name":@"张三",
                               @"gender":@"男",
                               @"age":@"18"};
    [UserInfoManager updateUserInfo:userInfo];
    
    NSLog(@"######%@",@"存储新的信息");
    NSLog(@"%@",UserModel.name);
    NSLog(@"%@",UserModel.gender);
    NSLog(@"%@",UserModel.age);
    
    NSLog(@"######%@",@"更新信息");
    [UserInfoManager updateValue:@"改变为张四" forKey:@"name"];
    [UserInfoManager updateValue:@"改变为30" forKey:@"age"];
    [UserInfoManager updateValue:@"改变为男" forKey:@"gender"];
    [UserInfoManager updateValue:@"新添加的身高为170" forKey:@"height"];
    NSLog(@"%@",UserModel.name);
    NSLog(@"%@",UserModel.gender);
    NSLog(@"%@",UserModel.age);
    NSLog(@"%@",UserModel.height);
    
    NSLog(@"%@",UserModel.height);
}