RestKit沒有映射來自JSON的圖片

Question

我是無法正確映射來自我的JSON響應的圖像，我找不到原因。

這裏是錯誤：「W restkit.object_mapping：RKObjectMappingOperation.m：在的keyPath‘圖像’沒有戰略從‘__NSArrayM’轉變爲‘形象’的價值244轉型失敗」

這裏JSON：

{ 
    "timestamp": "2013-05-10T03:09:39Z", 
    "feed": [{ 
     "headline": "Head text", 
     "links": { 
      "api": { 
       "news": { 
        "href": "http://api.website.com/v1/91" 
       }, 
       "self": { 
        "href": "http://api.website.com/v1/91" 
       } 
      }, 
      "web": { 
       "href": "http://website.com/the/story" 
      }, 
      "mobile": { 
       "href": "http://m.website.com/wireless/story?storyId=9254113" 
      } 
     }, 
     "source": "Associated Press", 
     "description": "Description text.", 
     "images": [{ 
      "height": 324, 
      "alt": "", 
      "width": 576, 
      "name": "Name text", 
      "caption": "Caption text.", 
      "url": "http://a.website.com/media/2013/0508.jpg" 
     }], 

Feed.h

@property (nonatomic, strong) Links *links; 
@property (nonatomic, strong) Images *images; 
@property (nonatomic, strong) Video *video; 
@property (nonatomic, strong) NSString *headline; 
@property (nonatomic, strong) NSString *source; 
@property (nonatomic, strong) NSDate *published; 
@property (nonatomic, strong) NSString *description; 
@property (nonatomic, strong) NSString *premium; 

+ (RKObjectMapping *) mapping; 

Feed.m

+ (RKObjectMapping *)mapping { 
    RKObjectMapping *objectMapping = [RKObjectMapping mappingForClass:[self class] usingBlock:^(RKObjectMapping *mapping) { 
     [mapping mapKeyPathsToAttributes: 
     @"headline", @"headline", 
     @"source", @"source", 
     @"published", @"published", 
     @"description", @"description", 
     @"premium", @"premium", 
     nil]; 
     [mapping hasOne:@"links" withMapping:[Links mapping]]; 
     [mapping hasOne:@"images" withMapping:[Images mapping]]; 
     //[mapping hasMany:@"images" withMapping:[Images mapping]]; 
     [mapping hasOne:@"video" withMapping:[Video mapping]]; 
    }]; 

    return objectMapping; 
} 

Images.h

@property (nonatomic, strong) NSNumber *height; 
@property (nonatomic, strong) NSNumber *width; 
@property (nonatomic, strong) NSString *caption; 
@property (nonatomic, strong) NSURL *url; 

+ (RKObjectMapping *) mapping; 

Images.m

+ (RKObjectMapping *)mapping { 
    RKObjectMapping *objectMapping = [RKObjectMapping mappingForClass:[self class] usingBlock:^(RKObjectMapping *mapping) { 
     [mapping mapKeyPathsToAttributes: 
     @"height", @"height", 
     @"width", @"width", 
     @"caption", @"caption", 
     @"url", @"url", 
     nil]; 
    }]; 

    return objectMapping; 
} 

其他的一切是正確的映射圖像除外。我不知道是否它是一個數組，但它只有一個結果，所以它不一定是一個數組？如果沒有，那麼我會怎麼寫...我只是不完全清楚爲什麼它不映射。

正如你所看到的，我嘗試了兩個hasMany:和hasOne:映射，都沒有工作，我得到了同樣的錯誤。我試過使用NSLog(@"url image: %@", feedLocal.images.url);' but get（null）. Even though I thought it would work because NSLog（@「href web：％@」，feedLocal.links.web.href）;`完全適用於我的鏈接href。

任何幫助將不勝感激，非常感謝！

Answer 1

在Feed.h你需要改變你的images屬性爲：

@property (nonatomic, strong) NSArray *images; 

你應該映射設置爲hasMany:。