Archive&Unarchive

Archive（归档）

需要归档的对象必须要遵循NSCoding协议，那么在调用archiverRootObject方法的时候，会自动调用该对象的encodeWithCoder方法

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

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

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

    [aCoder encodeObject:_tel forKey:@"tel"];

    [aCoder encodeObject:_icon forKey:@"icon"];

}

Unarchive（恢复）

需要恢复的对象在调用unarchiveObjectWithFile方法的时候，会自动调用该对象的initWithCoder方法

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

    NSLog(@".....");

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

    _age = [aDecoder decodeIntegerForKey:@"age"];

    _tel = [aDecoder decodeObjectForKey:@"tel"];

    _icon = [aDecoder decodeObjectForKey:@"icon"];

    return self;

}