归档－对模型数组对象（存储到本地的plist文件）也数组里存放的是模型

一、模型文件

（1）JLMainViewsModel.h文件 必须遵循 NSCoding协议

@interface JLMainViewsModel : NSObject<NSCopying,NSCoding>

（2）JLMainViewsModel.m文件 实现代理方法

 @implementation JLMainViewsModel

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

     [aCoder encodeObject:self.fromSource forKey:@"fromSource"];
     [aCoder encodeObject:self.url forKey:@"url"];
     [aCoder encodeObject:self.title forKey:@"title"];
     [aCoder encodeObject:self.type forKey:@"type"];
     [aCoder encodeObject:self.newsTime forKey:@"newsTime"];
     [aCoder encodeObject:self.imageUrl forKey:@"imageUrl"];
     [aCoder encodeObject:self.imageArray forKey:@"imageArray"];
     [aCoder encodeObject:self.bigImageUrl forKey:@"bigImageUrl"];
     [aCoder encodeObject:self.bigImageArray forKey:@"bigImageArray"];
     [aCoder encodeObject:self.recommend forKey:@"recommend"];
     [aCoder encodeObject:self.exData forKey:@"exData"];
     [aCoder encodeObject:self.newsType forKey:@"newsType"];
     [aCoder encodeObject:self.style forKey:@"style"];
     [aCoder encodeObject:self.gzh forKey:@"gzh"];
     [aCoder encodeObject:self.uniqId forKey:@"uniqId"];
     [aCoder encodeObject:self.subdesc forKey:@"subdesc"];
     [aCoder encodeObject:self.autoplay forKey:@"autoplay"];
     [aCoder encodeObject:self.fromicon forKey:@"fromicon"];
     [aCoder encodeObject:self.webUrl forKey:@"webUrl"];
 }

 -(id)initWithCoder:(NSCoder *)aDecoder{
     if (self = [super init]) {
         self.fromSource = [aDecoder decodeObjectForKey:@"fromSource"];
         self.url = [aDecoder decodeObjectForKey:@"url"];
         self.title = [aDecoder decodeObjectForKey:@"title"];
         self.type = [aDecoder decodeObjectForKey:@"type"];
         self.newsTime = [aDecoder decodeObjectForKey:@"newsTime"];
         self.imageUrl = [aDecoder decodeObjectForKey:@"imageUrl"];
         self.imageArray = [aDecoder decodeObjectForKey:@"imageArray"];
         self.bigImageUrl = [aDecoder decodeObjectForKey:@"bigImageUrl"];
         self.bigImageArray = [aDecoder decodeObjectForKey:@"bigImageArray"];
         self.recommend = [aDecoder decodeObjectForKey:@"recommend"];
         self.exData = [aDecoder decodeObjectForKey:@"exData"];
         self.newsType = [aDecoder decodeObjectForKey:@"newsType"];
         self.style = [aDecoder decodeObjectForKey:@"style"];
         self.gzh = [aDecoder decodeObjectForKey:@"gzh"];
         self.uniqId = [aDecoder decodeObjectForKey:@"uniqId"];
         self.subdesc = [aDecoder decodeObjectForKey:@"subdesc"];
         self.autoplay = [aDecoder decodeObjectForKey:@"autoplay"];
         self.fromicon = [aDecoder decodeObjectForKey:@"fromicon"];
         self.webUrl = [aDecoder decodeObjectForKey:@"webUrl"];
     }
     return self;
 }

 - (id)copyWithZone:(NSZone *)zone
 {
     JLMainViewsModel *model = [[[self class] allocWithZone:zone]init];
     return model;
 }
 @end

二、对模型数组进行存储 到本地

 //此段代码紧紧只是为了说明 存储段数组 是模型数组
                 NSMutableArray *mArray = [NSMutableArray array];
                 //字典转模型
                 for (NSDictionary *dict  in array) {
                     JLMainViewsModel *news = [JLMainViewsModel newsWithDict:dict];
                     [mArray addObject:news];
                 }

这段代码才是 存储操作

 //1.获取存储的路径
                     NSString *documents = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) lastObject];
                     NSString *filePatha = [documents stringByAppendingPathComponent:@"newsModelWithArray.plist"];
                     //归档
                     [NSKeyedArchiver archiveRootObject:mArray toFile:filePatha];

三、读取 归档的数据

 #pragma  mark - 获取本地缓存(归档)
 -(BOOL)getNwsDataUnarchiver{
     NSString *documents = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)lastObject];
     NSString *filePath = [documents stringByAppendingPathComponent:@"newsModelWithArray.plist"];
     NSMutableArray<JLMainViewsModel *> *newsModelList = [NSKeyedUnarchiver unarchiveObjectWithFile:filePath];
     if (newsModelList.count > ) {
         self.dataArray = newsModelList.mutableCopy;
         return YES;
     }
     return NO;
 }