归档与反归档

    //1.创建归档对象   

    NSMutableData *data = [NSMutableData data];   

    NSKeyedArchiver *archiver = [[NSKeyedArchiver alloc]  initForWritingWithMutableData:data];    

    //2.归档   

   [archiver encodeObject:per forKey:@"array"];    

    //3.结束归档,当结束归档之后,再归档无效   

    [archiver finishEncoding];   

    [array release];   

    [archiver release];

    //5.data写入文件   

     BOOL isSucceed = [data writeToFile:[self getFiel] atomically:YES];

   //1.根据文件路径初始化NSMutableData   

     NSMutableData *Data = [NSMutableData dataWithContentsOfFile:/Users/lanouhn/Library/Application Support/iPhone Simulator/7.1/Applications/300BEFD5-1F93-47A3-A1B3-936195FAA53F];

    //2.创建一个反归档类

    NSKeyedUnarchiver *unarchiver = [[NSKeyedUnarchiver alloc] initForReadingWithData:Data];    

    //3.反归档   

    NSArray *array  = [unarchiver decodeObjectForKey:@"array"];

    //4.结束反归档   

    [unarchiver finishDecoding];   

    [unarchiver release];

1.如果要对一个类的对象实现归档操作,必须让该类实现NSCoding协议

2.当对象为字符串,数组,字典,集合时,属性的语义特性声明为copy.

3.定义完属性的在给实例变量赋值时,要使用setter方法.

归档与反归档

原文：http://blog.csdn.net/hakusan/article/details/39429443