IOS开发——自定义类归档（继承于自定义类）

IOS开发——自定义类归档（继承于自定义类）

 

   我先创建一个新闻基类，对其实现NSCoding协议；再创建一个图组新闻类继承于这个新闻基类，添加一些属性（图组），那么这个自定义的图组新闻类该如何实现归档呢？

   下面是个痛苦的领悟...

图片新闻类：

#import "DMNewsDataModel.h"
@interface DMPictureNewsModel : DMNewsDataModel
@property (strong, nonatomic)NSMutableArray *ymImageList;//图片列表
@end

 
#import "DMPictureNewsModel.h"
@implementation DMPictureNewsModel
@synthesize ymImageList = _ymImageList;
//数据归档
- (void)encodeWithCoder:(NSCoder *)aCoder{
    [super encodeWithCoder:aCoder];
    [aCoder encodeObject:_ymImageList forKey:@"_ymImageList"]; 
}

//数据逆归档
- (id)initWithCoder:(NSCoder *)aDecoder{
    self = [super initWithCoder:aDecoder];
    if(self){
        _ymImageList = [aDecoder decodeObjectForKey:@"_ymImageList"];    
    }
    return self;
}
@end

新闻基类：

#import 
@interface DMNewsDataModel : NSObject
@property (strong, nonatomic)NSString *ymContentid;  //新闻ID
@property (strong, nonatomic)NSString *ymTitle;      //新闻标题
@property (strong, nonatomic)NSString *ymModelid;    //"模型id"比如 1 文章 2 组图 3 视频
@property (strong, nonatomic)NSString *ymCatid;      //分类id
@property (strong, nonatomic)NSString *ymDescription;//内容简介
@property (strong, nonatomic)NSString *ymPublished;  //新闻发布时间戳
@property (strong, nonatomic)NSString *ymContent;    //新闻内容
@property (strong, nonatomic)NSString *ymSource;     //新闻来源
@property (strong, nonatomic)NSString *ymThumb;      //新闻配图地址
@property (strong, nonatomic)NSString *ymVideo;      //视频URL(请求的新闻模型为modelid=4，其他为空)
@property (strong, nonatomic)NSString *ymPlaytime;   //点击次数
@property (strong, nonatomic)NSString *ymTopicid;    // 话题id  用于评论
@property (strong, nonatomic)NSString *ymComments;   //评论条数

 
///新闻获取
-(void)setContentid:(NSString *)theContentid
           andTitle:(NSString *)theTitle
         andModelid:(NSString *)theModelid
           andCatid:(NSString *)theCatid
       andPublished:(NSString *)thePublished
          andSource:(NSString *)theSource
     andDescription:(NSString *)theDescription
         andContent:(NSString *)theContent
           andThumb:(NSString *)theThumb
           andVideo:(NSString *)theVideo
        andPlaytime:(NSString *)thePlaytime
         andTopicid:(NSString *)theTopicid
        andComments:(NSString *)theComments;

//归档，必须写前面
- (void)encodeWithCoder:(NSCoder *)aCoder;

//逆归档
- (id)initWithCoder:(NSCoder *)aDecoder;

@end

#import "DMNewsDataModel.h"
@implementation DMNewsDataModel
@synthesize ymContentid = _ymContentid;
@synthesize ymTitle     = _ymTitle;
@synthesize ymModelid   = _ymModelid;
@synthesize ymCatid     = _ymCatid;
@synthesize ymPublished = _ymPublished;
@synthesize ymSource    = _ymSource;
@synthesize ymDescription = _ymDescription;
@synthesize ymContent   = _ymContent;
@synthesize ymThumb     = _ymThumb;
@synthesize ymVideo     = _ymVideo;
@synthesize ymPlaytime  = _ymPlaytime;
@synthesize ymTopicid   = _ymTopicid;
@synthesize ymComments  = _ymComments;

 
//归档
- (void)encodeWithCoder:(NSCoder *)aCoder{
    [aCoder encodeObject:_ymContentid forKey:@"_ymContentid"];
    [aCoder encodeObject:_ymTitle forKey:@"_ymTitle"];
    [aCoder encodeObject:_ymModelid forKey:@"_ymModelid"];
    [aCoder encodeObject:_ymCatid forKey:@"_ymCatid"];
    [aCoder encodeObject:_ymPublished forKey:@"_ymPublished"];
    [aCoder encodeObject:_ymSource forKey:@"_ymSource"];
    [aCoder encodeObject:_ymDescription forKey:@"_ymDescription"];
    [aCoder encodeObject:_ymContent forKey:@"_ymContent"];
    [aCoder encodeObject:_ymThumb forKey:@"_ymThumb"];
    [aCoder encodeObject:_ymVideo forKey:@"_ymVideo"];
    [aCoder encodeObject:_ymPlaytime forKey:@"_ymPlaytime"];
    [aCoder encodeObject:_ymTopicid forKey:@"_ymTopicid"];
    [aCoder encodeObject:_ymComments forKey:@"_ymComments"];

}

//逆归档
- (id)initWithCoder:(NSCoder *)aDecoder{
    self = [super init];
    if(self){
        _ymContentid   = [aDecoder decodeObjectForKey:@"_ymContentid"];
        _ymTitle       = [aDecoder decodeObjectForKey:@"_ymTitle"];
        _ymModelid     = [aDecoder decodeObjectForKey:@"_ymModelid"];
        _ymCatid       = [aDecoder decodeObjectForKey:@"_ymCatid"];
        _ymPublished   = [aDecoder decodeObjectForKey:@"_ymPublished"];
        _ymSource      = [aDecoder decodeObjectForKey:@"_ymSource"];
        _ymDescription = [aDecoder decodeObjectForKey:@"_ymDescription"];
        _ymContent     = [aDecoder decodeObjectForKey:@"_ymContent"];
        _ymThumb       = [aDecoder decodeObjectForKey:@"_ymThumb"];
        _ymVideo       = [aDecoder decodeObjectForKey:@"_ymVideo"];
        _ymPlaytime    = [aDecoder decodeObjectForKey:@"_ymPlaytime"];
        _ymTopicid     = [aDecoder decodeObjectForKey:@"_ymTopicid"];
        _ymComments    = [aDecoder decodeObjectForKey:@"_ymComments"];
    }
    return self;
}

@end