Person.h
#import <Foundation/Foundation.h>
@interface LoginModel : NSObject
@property (nonatomic, copy) NSString *name;
@property (nonatomic, assign) int age;
@end
Person.m
#import "LoginModel.h"
#import "MJExtension.h"
@implementation LoginModel
//cording
MJExtensionCodingImplementation
@end
或者
Person.m
#import "Person.h"
//遵守NSCoding协议
@implementation LoginModel<NSCoding>
#pragma mark 编码,对象属性进行编码
- (void)encodeWithCoder:(NSCoder *)aCoder
{
//前者(_age,_name)是属性,后者是关键字Key(age,name)
[aCoder encodeInt:_age forKey:age];
[aCoder encodeObject:_name forKey:name];
}
#pragma mark 解码,解码归档数据初始化对象
- (id)initWithCoder:(NSCoder *)aDecoder
{
if (self = [super init]) {
_idNum = [aDecoder decodeIntForKey:age];
_name = [aDecoder decodeObjectForKey:name];
}
return self;
}
ViewController1:
保存数据
Person *p=[[Person alloc] init];
p.name=@"小王";
p.age=12;
//设置保存路径
NSString * CLSLoginDataPath=[[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)lastObject] stringByAppendingString:@"CLSLOGINDATA.data"];
//Encoding保存LoginModel
[NSKeyedArchiver archiveRootObject:loginModel toFile:CLSLoginDataPath];
ViewController2:
读取数据
NSString * CLSLoginDataPath=[[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)lastObject] stringByAppendingString:@"CLSLOGINDATA.data"]
// Decoding
Person*p = [NSKeyedUnarchiver unarchiveObjectWithFile:CLSLoginDataPath];
NSString*name=p.name;
int age=p.age;
