在 UITableView 中显示来自结构的数据

Question

我想我在 Swift 4 中的表格视图中遗漏了一些东西，或者我可能只是没有像我应该的那样传递我的数据.. 我读了一个 json，我应该将其保存在结构 "Workspace" 中，然后我使用相同的结构在我的 tableview

中显示数据

我有这个class：

public class User {

    var Wor = [Workspace]()
    var WorData = Workspace()

}

这个结构： getuserWorkspace 函数应该更新结构值。

struct Workspace: Decodable {
    var guid: String
    var name: String

private enum CodingKeys : String, CodingKey {
    case guid = "guid"
    case name = "name"
}

init(){
    self.guid = "guid"
    self.name = "name"
}

mutating func getUserWorkspace(base: String, completed: @escaping () -> ()){
    let url = URL(string: "SOME URL")!
    var request = URLRequest(url: url)
    request.addValue("Basic \(base)", forHTTPHeaderField: "Authorization")
    request.addValue("application/json", forHTTPHeaderField: "Accept")
    URLSession.shared.dataTask(with: request){ (data, response, error) in
        if error == nil {
            do {
                let rep = try JSONDecoder().decode([Workspace].self, from: data!)
                print(rep) 
                //it prints exactly what I receive so I guess I'm saving it well? 
                DispatchQueue.main.async {
                    completed()
                }
            }catch {
                print(error)
            }
        }
    }.resume()
}

我的视图控制器中有这个：

   var co = User()

override func viewDidLoad() {
    super.viewDidLoad()

    co.getBase()
    co.WorData.getUserWorkspace(base: co.Base) {
        print("success")
        self.listView.reloadData()
        self.updateVertically()
    }
    print("guid " + co.WorData.guid)
    print("name " + co.WorData.name)
    print("work ", co.WorData)
    print("wor ", co.Wor)
    listView.delegate = self
    listView.dataSource = self
}

在我返回的表视图行中co.Wor.count 在单元格行 co.Wor[indexPath.row].name

但一切都是空白印刷品给我这个：

guid guid
name name
work  Workspace(guid: "guid", name: "name")
wor  []
[Proj.Workspace(guid: "8a81b08e45467656fr467f51119047027", name: "test ok")]
(this print is inside the function in the structure)
success

我真的很困惑如何解决这个问题

Answer 1

1- 最好设置数据源并委托 viewDidLoad

的顶部

override func viewDidLoad() {
  super.viewDidLoad()
   listView.delegate = self
  listView.dataSource = self
}

2-拿到数据后赋值

mutating func getUserWorkspace(base: String, completion: @escaping (_ arr:[Workspace]?) -> void ){
  let rep = try JSONDecoder().decode([Workspace].self, from: data!)
  completion(rep)
}

//

  co.WorData.getUserWorkspace(base: co.Base) { (arr) in 
    print("success")
    self.co.Wor = arr
    self.listView.reloadData()
    self.updateVertically()
}

在 UITableView 中显示来自结构的数据

Show data from structure in UITableView

structure

tableview

swift