iOS 自定义的对象类型的解档和归档

自定义的对象的解档和归档

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如果想对自己自定义的类进行解档和归档的话 必须遵循一个协议：NSCoding

Student.h 文件

#import <Foundation/Foundation.h>

@interface Student : NSObject<NSCoding>

@property(nonatomic,strong)NSString *name;

@property(nonatomic,assign)int age;

-(instancetype)initWithName:(NSString *)name AndAge:(int)age;

@end

Student.m 文件

#import "Student.h"

@implementation Student

- (instancetype)initWithName:(NSString *)name AndAge:(int)age

{

    self = [super init];

    if (self) {

        _age=age;

        _name=name;

    }

    return self;

}

//解答时候调用 是一个初始化的方法

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

    self=[super init];

    if (self) {

        _name=[aDecoder decodeObjectForKey:@"name"];

        _age=(int)[aDecoder decodeIntegerForKey:@"age"];

    }

    return self;

}

//归档调用该方法

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

    NSLog(@"encodeWithCoder");

    [aCoder encodeObject:_name forKey:@"name"];

    [aCoder encodeInteger:_age forKey:@"age"];

}

-(NSString *)description{

    return [NSString stringWithFormat:@"name=%@,age=%d",_name,_age];

}

@end

客户端代码

#import "ViewController.h"

#import "Student.h"

#define PATH [NSHomeDirectory() stringByAppendingPathComponent:@"Student.qll"]

@interface ViewController ()

@end

@implementation ViewController

- (void)viewDidLoad {

    [super viewDidLoad];

    NSLog(@"%@",PATH);

    Student *stu=[[Student alloc]init];

    stu.name=@"张F";

    stu.age=;

    NSLog(@"%@",stu);

    //归档

  BOOL bol=[NSKeyedArchiver archiveRootObject:stu toFile:PATH];

    if (bol==) {

        NSLog(@"归档成功");

    }

    //解档

    Student *stu1=[NSKeyedUnarchiver unarchiveObjectWithFile:PATH];

    NSLog(@"%@",stu1);

}

- (void)didReceiveMemoryWarning {

    [super didReceiveMemoryWarning];

    // Dispose of any resources that can be recreated.

}

@end

运行结果：