15-2 对象的编码和解码

#import <Foundation/Foundation.h>
#import "MyClass.h"
#import "MyClass1.h"
//  对象的编码和解码（序列化和反序列化）
int main(int argc, const char * argv[]) {
    @autoreleasepool {
        MyClass *my = [[MyClass alloc]init];
        my.name = @"bill";
        my.email=@"bill@microsoft.com";
        
        if([NSKeyedArchiver archiveRootObject:my toFile:@"myclass.arch"] == YES)//存储对象
        {
            NSLog(@"文件存储成功.");
        }
        
        MyClass *my1;
        my1 = [NSKeyedUnarchiver unarchiveObjectWithFile:@"myclass.arch"];
        NSLog(@"my1.name = %@, my1.email = %@", my1.name, my1.email);//my1.name = bill, my1.email = bill@microsoft.com
}

#import <Foundation/Foundation.h>

@interface MyClass : NSObject<NSCopying,NSCoding>
@property (copy, nonatomic) NSString *name, *email;
@end

#import "MyClass.h"

@implementation MyClass
@synthesize name, email;
-(id)copyWithZone:(NSZone *)zone
{
    MyClass* my = [[MyClass allocWithZone:zone]init];
    my.name = name;
    my.email = email;
    return my;
}
//  编码
-(void)encodeWithCoder:(NSCoder *)aCoder
{
    [aCoder encodeObject:name forKey:@"key_name"];
    [aCoder encodeObject:email forKey:@"key_email"];
}
//  解码
-(id)initWithCoder:(NSCoder *)aDecoder
{
    name = [aDecoder decodeObjectForKey:@"key_name"];
    email = [aDecoder decodeObjectForKey:@"key_email"];
    return self;
}
@end