Question

在一些测试中，我被一些我不太了解的东西卡住了，看起来表格单元的生成是在页面加载和Alamofire请求之前发生的，而不是在页面加载之后发生的。

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import Alamofire
import SwiftyJSON

class ShipmentProSearchResultsTableViewController: UITableViewController {

    var pronumber:String = ""
    var shipments = [Shipment]()
    typealias JSONStandard = [String: AnyObject]

    override func viewDidLoad() { 
        super.viewDidLoad()
        fetchShipments()

    }

    func fetchShipments() {
        let parameters: Parameters = ["pro_number": pronumber]
        let todoEndpoint: String = "OURHOST/shipments/api/details/pro"
        Alamofire.request(todoEndpoint, method: .get, parameters: parameters)
            .responseJSON { response in
            if response.result.isSuccess{
                let shipmentJSON : JSON = JSON(response.result.value!)
                for (index, subJson):(String, JSON) in shipmentJSON{
                    let proNumber = subJson["proNumber"].int
                    let consigneeName = subJson["consignee"]["name"].string
                    let shipment = Shipment(proNumber: proNumber!, consigneeName: consigneeName!)

                    self.shipments.append(shipment)
                }
                print(self.shipments)
            }else{
                print("Could not get results")
            }
        }
    }


    // MARK: - Table view data source

    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return shipments.count
    }


    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "ShipmentCell", for: indexPath)
        let shipment = shipments[indexPath.row]

        cell.textLabel?.text = "Hello"
        cell.detailTextLabel?.text = "\(shipment.proNumber)"

        return cell
    }
}

现在在打印self.shipments的地方，得到以下结果：

[OakRidgeArchaeologicalRepositoryDispatcher.Shipment(proNumber: 471008276, consigneeName: "A1 CHICAGO INSTITUTE OF THE ARTS")]

所以我知道数据已经适当地传递给了模型。我还将注意到情节提要中的“表视图单元格标识符”已正确设置为ShipmentCell。但是查询之后，我的表中没有任何内容弹出。

我正在使用Swift 4。

Answer 1

更新源字段后，您应该重新加载tableView。

func fetchShipments() {
        let parameters: Parameters = ["pro_number": pronumber]
        let todoEndpoint: String = "OURHOST/shipments/api/details/pro"
        Alamofire.request(todoEndpoint, method: .get, parameters: parameters)
            .responseJSON { response in
            if response.result.isSuccess{
                let shipmentJSON : JSON = JSON(response.result.value!)
                for (index, subJson):(String, JSON) in shipmentJSON{
                    let proNumber = subJson["proNumber"].int
                    let consigneeName = subJson["consignee"]["name"].string
                    let shipment = Shipment(proNumber: proNumber!, consigneeName: consigneeName!)

                    self.shipments.append(shipment)
                }
                tableView.reloadData() //<-------add this.
                print(self.shipments)
            }else{
                print("Could not get results")
            }
        }
    }

UITableView和模型数组中的单元格

1 个答案: