Question

我有一个像var arrayOfDictionary = [[:]]这样的词典。现在我的tableviewcell中有一些数据，例如rate，id等。我在cellForRowAt中将这些值存储在字典中......

    var dictionary = ["id": "", "quantity": "","sellingPrice":""] as [String : Any]
    dictionary["id"] = product?.id
    dictionary["quantity"] = product?.quantity
    dictionary["sellingPrice"] = product?.theRate
    arrayOfDictionary.append(dictionary)

现在，当我打印arrayOfDictionary时，我会得到类似的东西......

[[:], [AnyHashable("id"): "5", AnyHashable("sellingPrice"): "499", AnyHashable("quantity"): "-1"], [AnyHashable("id"): "8", AnyHashable("sellingPrice"): "500", AnyHashable("quantity"): "79"], [AnyHashable("id"): "8", AnyHashable("sellingPrice"): "500", AnyHashable("quantity"): "79"]]

即3个产品的id，quantity和rate。但我不希望以这种格式使用此格式，而是想要第一组id，rate＆amp;一组quantity，第二组id，rate＆amp; quantity在另一组＆amp;等...... ..

简而言之，我希望他们采用这种格式...

[{"remaining_balance":"0.0","shipping_charges":0, "grand_total":320,"product_id”:”4”}, {"remaining_balance”:”1.0”,”shipping_charges”:200, "grand_total”:456,”product_id”:”5”}]

Answer 1

首先，将您的字典明确声明为0.75000000000000055511151231257827021181583404541015625，以便在打印时删除[String:Any]。

其次，看起来您正在尝试获取JSON格式（在Swift中打印Dictionary时，您将获得方括号而不是卷曲的），要从字典数组中获取JSON，请使用{{ 1}}。

AnyHashable

您实际上不应该将JSON转换为String，我只是为了向您展示String格式，您可以使用JSONSerialization类型的var arrayOfDictionary = [[String:Any]]() var dictionary = ["id": "", "quantity": "","sellingPrice":""] as [String : Any] dictionary["id"] = product?.id dictionary["quantity"] = product?.quantity dictionary["sellingPrice"] = product?.theRate arrayOfDictionary.append(dictionary) print(arrayOfDictionary) //[["id": "5", "sellingPrice": "-1", "quantity": "499"]] do { let jsonArrayOfDict = try JSONSerialization.data(withJSONObject: arrayOfDictionary) print(String(data: jsonArrayOfDict, encoding: .utf8)!) //"[{\"id\":\"5\",\"sellingPrice\":\"-1\",\"quantity\":\"499\"}]" } catch { print(error) }变量来保存您的JSON数据或通过API将其上传到服务器。

Answer 2

不要担心这也是一个字典数组，但你对JSON打印格式和字典打印格式数组感到困惑：

[[:], [AnyHashable("id"): "5", AnyHashable("sellingPrice"): "499", AnyHashable("quantity"): "-1"], [AnyHashable("id"): "8", AnyHashable("sellingPrice"): "500", AnyHashable("quantity"): "79"], [AnyHashable("id"): "8", AnyHashable("sellingPrice"): "500", AnyHashable("quantity"): "79"]]

这是你的数组中的字典：

[AnyHashable("id"): "5", AnyHashable("sellingPrice"): "499", AnyHashable("quantity"): "-1"],

您可以通过迭代来验证它：

for dict in arrayOfDictionary {
    print(dict)
}

修改

var arrayOfDictionary = [[String:Any]]() var dictionary = ["id": "", "quantity": "","sellingPrice":""] as [String : Any] dictionary["id"] = product?.id dictionary["quantity"] = product?.quantity dictionary["sellingPrice"] = product?.theRate arrayOfDictionary.append(dictionary) let data = try! JSONSerialization.data(withJSONObject: arrayOfDictionary, options: .prettyPrinted) print(data) let json = NSString(data: data, encoding: String.Encoding.utf8.rawValue) print(json)

显示字典数组的问题

2 个答案: