Object-C 学习笔记(二十九)--- 归档(2)

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使用NSData进行键值对归档:

////  main.m//  storeDemo_NSdata////  Created by 5016 on 13-12-18.//  Copyright (c) 2013年 dradon. All rights reserved.//#import <Foundation/Foundation.h>//使用NSData进行归档存储//归档void store(){    //1.获取路径    NSString *homePath = NSHomeDirectory();    NSString *targetPath = [homePath stringByAppendingPathComponent:@"Desktop/arr1.archive"];    //2.准备数据    NSMutableData *data = [NSMutableData data];    //3.归档    NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc]initForWritingWithMutableData:data];    [archiver encodeInt:23 forKey:@"age"];    [archiver encodeObject:@"dragon" forKey:@"name"];    [archiver finishEncoding];//结束编码    [archiver release];    //4.写入文件    BOOL success = [data writeToFile:targetPath atomically:YES];        if (success) {        NSLog(@"归档成功");    }    else    {        NSLog(@"归档失败");    }    }//解档void readstore(){    //1.获取路径    NSString *homePath = NSHomeDirectory();    NSString *targetPath = [homePath stringByAppendingPathComponent:@"Desktop/arr1.archive"];    //2.读取文件    NSData *data = [NSData dataWithContentsOfFile:targetPath];    //3.解档    NSKeyedUnarchiver *unachiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:data];    //4.读取解档文件    int age = [unachiver decodeIntForKey:@"age"];    NSString *name = [unachiver decodeObjectForKey:@"name"];        NSLog(@"age = %d , name = %@",age,name);}int main(int argc, const char * argv[]){    @autoreleasepool {                store();        readstore();    }    return 0;}

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