归档反归档

   
//归档 反归档(麻烦的方法)
    /*
    //归档
    //创建Person实例对象
    Person *person1=[[Person alloc]init];
    person1.name=@"bbb";
    person1.age=@"39";
    
    Person *person2=[[Person alloc]init];
    person2.name=@"aaa";
    person2.age=@"18";
    
    
    //归档使用的NSData
    NSMutableData *person1Data=[NSMutableData data];
    
    //创建归档工具
    NSKeyedArchiver *achiver=[[NSKeyedArchiver alloc]initForWritingWithMutableData:person1Data];
    
    //进行归档(需要宏定义)
    [achiver encodeObject:person1 forKey:kPerson1];
    [achiver encodeObject:person2 forKey:kPerson2];
    
    
    //完成转换
    [achiver finishEncoding];
    
    //获取Documents路径
    NSString *documentsPath=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
    //拼接文件路径
    NSString *personPath=[documentsPath stringByAppendingString:@"/刘杰.xxoo"];
    
    //写入
    [person1Data writeToFile:personPath atomically:YES];
    NSLog(@"documents:%@",documentsPath);
    
    
    
    
    
    
    //反归档
    //通过文件路径获取data数据
    NSData *unData=[NSData dataWithContentsOfFile:personPath];
    
    //创建反归档工具
    NSKeyedUnarchiver *unArchiver=[[NSKeyedUnarchiver alloc]initForReadingWithData:unData];
    
    //进行反归档
    Person *p1=[unArchiver decodeObjectForKey:kPerson1];
    Person *p2=[unArchiver decodeObjectForKey:kPerson2];
    
    //结束反归档
    [unArchiver finishDecoding];
    NSLog(@"name:%@",p1.name);
    NSLog(@"age:%@",p1.age);
    NSLog(@"name:%@",p2.name);
    NSLog(@"age:%@",p2.age);
    */

    
    
//归档 反归档(简单方法)
    
    //获取Documents路径
    NSString *docPath=NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)[0];
    
    //拼接文件路径
    NSString *filePath=[docPath stringByAppendingString:@"/personArray.plist"];
    
    /*
     //只能归档一个对象
    Person *pn1=[[Person alloc]init];
    pn1.name=@"王小二";
    pn1.age=@"20";
    
    //归档
    [NSKeyedArchiver archiveRootObject:pn1 toFile:filePath];
    
    //反归档
    Person *p1=[NSKeyedUnarchiver unarchiveObjectWithFile:filePath];
    NSLog(@"name:%@",p1.name);
    NSLog(@"age:%@",pn1.age);
    */
    
    
    Person *pn1=[[Person alloc]init];
    pn1.name=@"Tom";
    pn1.age=@"12";
    
    Person *pn2=[[Person alloc]init];
    pn2.name=@"Kim";
    pn2.age=@"25";
    
    
    NSArray *array=@[pn1,pn2];//把两个数据放到数组里面
    

    
    //反归档
    NSArray *a=[NSKeyedUnarchiver unarchiveObjectWithFile:filePath];
    
    NSLog(@"name:%@",[a[0] name ]);
    NSLog(@"age:%@",[a[0] age]);
    
    NSLog(@"name:%@",[a[1] name]);
    NSLog(@"age:%@",[a[1] age]);