ios24-数据持久化-对象归档(3)

//

//  Created by  on 13-6-18.

//  Copyright 2013年 __MyCompanyName__. All rights reserved.

//

#import <Foundation/Foundation.h>

//要实现当前类对象，就必须实现nscoding协议

@interface Student : NSObject<NSCoding>

{

    NSString *studentId;

    NSString *studentName;

    NSString *studentClass;

}

@property (nonatomic,retain) NSString *studentId;

@property (nonatomic,retain) NSString *studentName;

@property (nonatomic,retain) NSString *studentClass;

@end

------------------------------

//

//  Student.m

//  ios24-saveObjectToFile

//

//  Created by  on 13-6-18.

//  Copyright 2013年 __MyCompanyName__. All rights reserved.

//

#import "Student.h"

@implementation Student

@synthesize studentId,studentName,studentClass;

//进行归档编码

-(void)encodeWithCoder:(NSCoder *)aCoder{

    //将属性

    [aCoder encodeObject:studentId forKey:@"studentId"];

    [aCoder encodeObject:studentName forKey:@"studentName"];

    [aCoder encodeObject:studentClass forKey:@"studentClass"];

}

//对对象进行读取读取出来

-(id)initWithCoder:(NSCoder *)aDecoder{

    //进行属性解码

    self.studentId=[aDecoder decodeObjectForKey:@"studentId"];

    self.studentName=[aDecoder decodeObjectForKey:@"studentName"];

    self.studentClass=[aDecoder decodeObjectForKey:@"studentClass"];

    return self;

}

@end