变量Objective-C的Json映射

im映射此Json:

{
    "status": "ok",
    "count": 4,
    "count_total": 4,
    "pages": 1,
    "posts": [
        {
            "id": 220,
            "type": "products",
            "slug": "jugo-de-naranja",
            "url": "http://localhost/?products=jugo-de-naranja",
            "status": "publish",
            "title": "Jugo de Naranja",
            "title_plain": "Jugo de Naranja",
            "content": "",
            "excerpt": "",
            "date": "2014-03-12 17:34:01",
            "modified": "2014-03-12 17:34:01",
            "categories": [
                {
                    "id": 26,
                    "slug": "juices-2",
                    "title": "Juices",
                    "description": "",
                    "parent": 0,
                    "post_count": 2
                }
            ],
            "tags": [],
            "author": {
                "id": 1,
                "slug": "arturocalvo",
                "name": "arturocalvo",
                "first_name": "",
                "last_name": "",
                "nickname": "arturocalvo",
                "url": "",
                "description": ""
            },
            "comments": [],
            "attachments": [],
            "comment_count": 0,
            "comment_status": "closed",
            "custom_fields": {
                "product_type": [
                    "bebida"
                ],
                "tipo_de_bebida": [
                    "jugo"
                ],
                "jugo_0_size": [
                    "m"
                ],
                "jugo_0_real_id": [
                    "22"
                ],
                "jugo_0_price": [
                    "20"
                ],
                "jugo_0_sucursal": [
                    "2"
                ],
                "jugo": [
                    "1"
                ]
            }
        }
    }

但我的问题是，我需要为这个产品类在自定义字段部分映射tipo_de_bebida

@interface Products : NSObject

@property (nonatomic, copy) NSSet * productType;

@property (nonatomic, copy) NSString * name;
@property (nonatomic, copy) NSSet * productCategory;
@property (nonatomic, copy) NSSet * locationId;
@property (nonatomic, copy) NSSet * realId;
@property (nonatomic, copy) NSSet * price;
@property (nonatomic, copy) NSSet * size;
@property (nonatomic, copy) NSSet * mod;
@property (nonatomic, copy) NSSet * temp;

映射将与产品类型一起进行，因为我需要映射所有其他属性，但我的问题是我需要映射同一类中的其他产品，但映射其他产品字段

"product_type": [
                    "bebida"
                ],
                "tipo_de_bebida": [
                    "jugo"

名称不同，因此在字段中 jugo_0_尺寸 jugo_0_real_id jugo_0_价格 你成功了吗 “jugo”部分改为“platillo”或“cafe”，我尝试在数组中提取json以获得具有不同文本的字符串，但我的部分似乎不起作用，下面是代码

NSData* jsonData = [NSData dataWithContentsOfURL:
                    baseURL];

    NSError* error;
    NSDictionary* productJson = [NSJSONSerialization
                          JSONObjectWithData:jsonData

                          options:kNilOptions
                          error:&error];

    NSMutableArray *productArray = [[NSMutableArray alloc]init];
    for(NSString * key in productJson){

        [productArray addObject:key];
    }

---

有人能告诉我我做错了什么吗？提前感谢

您是否正在尝试将字典的键或对象放入数组中。因为在这两种情况下，for循环都是错误的。假设JSON的缩进是正确的，“tipo_de_bebida”是“custom_fields”对象（字典）中的一个元素，该对象（字典）是“posts”数组的元素。上面的代码会将“status”、“count”、“count_total”、“pages”和“posts”键添加到“productArray”。这是您真正想要的吗？提示：一步一个脚印。访问

productJson

获取“posts”，这将是一个NSArray。遍历数组，其中每个元素将是一个NSDictionary，包含“id”、“type”、“categories”…“自定义字段”“.NSLog你有什么，以确保你在你认为你应该在的地方。使用每个数组条目引用字典并提取所需的数据。