索引处的 SwiftyJSON 项目不起作用

Question

我有以下虚拟 JSON 数据：

{
 "folder": {
     "id": 1,
     "name": "Home",
     "parent_folder_id": null,
     "num_of_items": 10,
     "num_of_items_complete": 10,
     "children": {
         "folders": [
               {
                   "id": 2,
                   "name": "Identification",
                   "num_of_items": 4,
                   "num_complete": 4
               },
               {
                   "id": 3,
                   "name": "House and Household Equipment",
                   "num_of_items": 6,
                   "num_complete": 2
               },
               {
                   "id": 4,
                   "name": "Insurance",
                   "num_of_items": 4,
                   "num_complete": 3
               },
               {
                   "id": 5,
                   "name": "Owned Items",
                   "num_of_items": 6,
                   "num_complete": 5
               }
        ],
         "input_fields": [
            {
                "id": 1,
                "key": "Something",
                "value": "Dark Side",
                "type": "text"
            }
        ],
        "shortcuts": [

        ]
     }
  }
}

而且我需要使用 INDEX 访问 "children" 中的每个子项，而不是通过它的 collectionView 名称：

func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
        return self.data["folder"]["children"][section].count
    }

但计数总是 returns 0。无论如何我可以做到这一点吗？

Answer 1

试试这个：

return self.data["folder"]["children"]["folders"].count

我认为这是唯一可以做到的方法。