JSON如何在其他列表中調用對象

Question

我目前有一個看起來像這樣的JSON API：

{
  "posts": [
    {
      "id": 277,
      "title": "test title",
      "content": "test content",
      "attachments": [
        {
          "url": "http:\/\/www.example.com\/bar-icon-help@2x.png"
        }
    }
}    

我正在嘗試使用“附件”下的“ URL”。 請看看我在做什么錯：

-(void)dataRequestCompletedWithJsonObject.(id)jsonObject
{
    NSDictionary *recipeDictionary = (NSDictionary*)jsonObject;

    NSArray* recipeArray = (NSArray*)[recipeDictionary objectForKey:@"posts"];

    self.recipes = [[NSMutableArray alloc] init];

    for (NSDictionary* dic in recipeArray) {

        Recipe *recipe = [[Recipe alloc] init];

        recipe.name = [dic objectForKey:@"title"];
        recipe.thumbNail = [[dic objectForKey:@"attachements"]objectForKey:@"url"];
        recipe.twitterShareCount = [[dic objectForKey:@"id"] intValue];

        [recipes addObject:recipe];
    }

主要試圖弄清楚我應該用什么代替這行：

recipe.thumbNail = [[dic objectForKey:@"attachements"]objectForKey:@"url"];

感謝任何幫助！

Answer 1

您在附件對象中有一組字典。

[[[dic objectForKey:@"attachements"] objectAtIndex:0] objectForKey:@"url"]