将tableview选择的数据存储到具有键值的数组中 [英] store tableview selected data into array with key value

问题描述

我是swift的新手，并且我已经创建了tableview select all rows功能，所以select deselect对我来说很好用，但是现在我想要在tableview中选择数据，因此我尝试使用Encodable创建结构模型，如下所示

i am new to swift and and i have created tableview select all rows functionality so select deselect works fine for me but now i want data which is selected in tableview so i tried to create struct model with Encodable like below

class QuotationListDataModel: Encodable{
    var id: String?
    var quantity: String?
    var margin: String?
    var created_date: String?
    var part_number: String?
    var total_price: String?
    var freight: String?
    var fk_customer_id: String?

    init(id: String?,quantity: String?,margin: String?,created_date: String?,part_number: String,total_price: String,freight: String,fk_customer_id: String) {
        self.id = id
        self.quantity = quantity
        self.margin = margin
        self.created_date = created_date
        self.part_number = part_number
        self.total_price = total_price
        self.freight = freight
        self.fk_customer_id = fk_customer_id
    }
}

我想像下面这样放掉

[
  {
   margin: 20,
   quantity: 10
   part_number: 15
   total_price: 1500
   freight: 100
  },
  {
   margin: 20,
   quantity: 10
   part_number: 15
   total_price: 1500
   freight: 100
  }
]


@IBAction func btnSelectAllTapped(_ sender: UIButton) {
    if btnSelectAll.titleLabel?.text == "Select All"{
        self.btnSelectAll.setTitle("DeSelect All", for: .normal)
        self.btnSelectAll.backgroundColor = UIColor(red: 119/255, green: 119/255, blue: 119/255, alpha: 1)
        self.btnShare.isHidden = false
        self.arrSelectedIds = quotationSeelctedData.map({ (quotation: QuotationListDataModel) -> String in quotation.id! }) 
         //Here when user select all i want all data into array
        self.tblListView.reloadData()
    }else{
        self.isSelectAll = false
        btnSelectAll.setTitle("Select All", for: .normal)
        btnSelectAll.backgroundColor = UIColor(red: 0/255, green: 175/255, blue: 239/255, alpha: 1)
        self.btnShare.isHidden = true
        self.arrSelectedIds.removeAll()
        print(arrSelectedIds)
        self.tblListView.reloadData()
    }
}

所以我想要这样的选定数据，任何人都可以请我帮忙解决

so i want selected data like this can anyone please help me to solve it out

推荐答案

尝试一下:

let encoder = JSONEncoder()
encoder.outputFormatting = .prettyPrinted

do {
    let jsonData = try encoder.encode(MYARRAY)
    if let jsonString = String.init(data: jsonData, encoding: .utf8) {
        // That's your JSON string...
        print(jsonString)
    }
} catch {
    print("the encoding failed")
}

无论如何，您都需要通过ID来获取项目...一种更好，更快的解决方案是使用所选单元格的索引路径，并将其从数据源中提取出来.

Anyway you need to fetch your items by ID... a better and faster solution would be to use the indexpath of the selected cells and extract them from your datasource.

如Joakim Danielson所述，添加所需的CodingKeys.

as stated by Joakim Danielson, add the desired CodingKeys.

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