NSObject does not have a member named Key 错误

Question

我需要按照下面显示的格式构造一个 JSON 对象。

{
  "DeviceCredentials": {
    "UniqueId": "sample string 1"
  },
  "Handovers": [
    {
      "Occasions": [
        {
          "Id": 1
        },
        {
          "Id": 1
        }
      ]
    }
  ]
}

尽管 Occasions 数组存在问题。 Occasion 个对象的数量各不相同。有时可能只有一种情况，有时可能有多种。因为这是动态的，所以我写了下面的方法来创建这个数组。

func getOccasionArray(handover: Handover) -> JSON {
    var occArray = [[String: NSNumber]]()
    for occ in handover.occasions {
        let occasion = occ as Occasion
        var obj = ["Id": occasion.id!]
        occArray.append(obj)
    }
    let json = JSON(occArray)
    return json
}

我使用 SwiftyJSON 库将创建的数组转换为 JSON。这是 json 变量的返回结果，看起来像只有一次切换的切换。

[
  {
    "Id" : 243468
  }
]

到目前为止一切顺利。问题是我无法将其插入更大的 JSON 响应。像这样简单地调用方法会给出错误 'NSObject' does not have a member named 'Key'.

var parameters = [String: NSObject]()

parameters = [
    "DeviceCredentials": [
        "UniqueId": "1212121212"
    ],
    "Handovers": [
        [
            "Occasions": getOccasionArray(handover)
        ]
    ]
]

我尝试将返回值转换为数组 getOccasionArray(handover).arrayValue 但没有改变。

知道如何解决这个问题吗？

谢谢。

Answer 1

那时你不需要 SwiftyJSON:

让你的 'getOccasionArray' 变成 return 一个 [String: NSObject]

func getOccasionArray(handover: Handover) -> [String: NSObject] {
  var occArray = [[String: NSNumber]]()
  for occ in handover.occasions {
    let occasion = occ as Occasion
    var obj = ["Id": occasion.id!]
    occArray.append(obj)
  }
  return occArray
}

将参数定义为 [String: NSObject]:

var parameters = [[String: NSObject]]()

var json: [String: NSObject] = getOccasionArray(handover)        

parameters = [["DeviceCredentials": ["UniqueId": "1212121212"], "Handovers": ["Occasions": json]]]

NSObject does not have a member named Key 错误

NSObject does not have a member named Key error

arrays

json

ios

swift

swifty-json