Question

我正在尝试将JSON解析为数组。根据最高预约进行排序。然后使用该新数组在排行榜tableview上填充它。

我正在使用SwiftJson 坚持排序到数组

需要以降序的形式填充表格中的名称和其余值。

以下是我的摘要。

        let jsonUrl = URL(string: url)
        URLSession.shared.dataTask(with: jsonUrl!) { (data, response, error) in
            guard let data = data else { return }
            let jsonResult : JSON = JSON(data)
            print(jsonResult)


    } .resume()

以下是输出

{
  "Activities" : {
    "AHiHr9bzGXcN7pxvR68wulD9zqE3" : {
      "Case Closed" : "2",
      "Name" : "Tim Mac",
      "Appointment Made" : "2",
      "Prospects Met" : "2",
      "Policy Servicing" : "2"
    },
    "gDKBlbeMsiUUFaASOLn6eOdCIrJ3" : {
      "Case Closed" : "1",
      "Name" : "Jane Simpson",
      "Appointment Made" : "1",
      "Prospects Met" : "1",
      "Policy Servicing" : "1"
    },
    "W8uWoLf9qRX4a9BgXjLw5VZXjFu1" : {
      "Case Closed" : "3",
      "Name" : "John Doe",
      "Appointment Made" : "4",
      "Prospects Met" : "3",
      "Policy Servicing" : "2"
    }
  }
}

Answer 1

您可以将所有值作为字典数组并将其排序为：

  guard let Activities = jsonResult?["Activities"] as? [String:AnyObject] else {
            return
        }

        var values = [Dictionary<String, AnyObject>]()

        for (_, value) in Activities {
            values.append(value as! Dictionary<String, AnyObject>)
        }


        let sorted =   values.sorted { (dic1, dic2) -> Bool in

            Int(dic1["Appointment Made"] as? String ?? "") ?? 0 > Int(dic2["Appointment Made"] as? String ?? "") ?? 0

        }

        print(sorted)

//为您的数据建模

 for item in sorted {

            let model = Model.init(jsonData: item)

            // use model
        }

//你的模特

class Model: NSObject {

    var caseClosed :Int?
    var name :String?
    var appointmentMade :Int?
    var prospectsMet :Int?
    var policyServicing :Int?



    override init() {
        super.init()
    }

    init(jsonData : [String:AnyObject]) {

        //  map data to object

    }
}

Answer 2

使用JsonSerialisation jsonObjectWithData将jSon响应转换为NSArray对象。并运行for循环，访问数组中的每个元素作为NSDictionary，并比较它们的值以获得最高约会。

要了解有关从NSDictionary访问值的更多信息，请apple docs reference

要了解有关在swift中使用json的更多信息，apple docs reference。

Answer 3

我尝试过这种排序：

let activitiesDict = jsonData?["Activities"] as? [String:Any]

let activitiesArray = activitiesDict.map({ [$0.0 : $0.1] })

let sortedActivitiesArray = self.activitiesArray.sorted {
            (Int((($0 as! Dictionary<String, Any>)["Appointment Made"] as? String)!))! > (Int((($1 as! Dictionary<String, Any>)["Appointment Made"] as? String)!))!      
        }
print(sortedActivitiesArray)

希望它有所帮助。

我如何解析JSON，在数组中对其进行排序。拉出数据并填充到tableview？

3 个答案: