刷新容器视图中的单视图控制器

现在,我正在的容器视图中添加视图控制器 DashbordVC 通过使用以下代码进行编程:

var previousViewController : UIViewController?
var selectedIndex : Int = 0

// TopSalesVC - Instantiate ViewController
private lazy var topSalesVC: TopSalesVC = {
    var vc = TopSalesVC.viewController()
    self.addChildViewController(vc)
    return vc
}()    

// Methods
override func viewDidLoad() {
    super.viewDidLoad()
    self.setupView()
}

//------------------------------------------------------------------------------

func setupView() {

    self.previousViewController = self.topSalesVC
    self.add(asChildViewController: self.topSalesVC)
}

//------------------------------------------------------------------------------

private func add(asChildViewController viewController: UIViewController) {

    self.addChildViewController(viewController)
    self.containerView.addSubview(viewController.view)

    viewController.view.frame = self.containerView.bounds
    viewController.view.autoresizingMask = [.flexibleWidth, .flexibleHeight]
    viewController.didMove(toParentViewController: self)
}

//------------------------------------------------------------------------------

private func remove(asChildViewController viewController: UIViewController) {
    viewController.willMove(toParentViewController: nil)
    viewController.view.removeFromSuperview()
    viewController.removeFromParentViewController()
}

现在我的代码为选择器视图 didSelect 行如下:

override func pickerView(_ pickerView: UIPickerView, didSelectRow row: Int, inComponent component: Int) {
    self.selectedIndex = row
}

@IBAction func btnDoneClicked(_ sender: UIBarButtonItem) {

    BaseVC.isPickerOpen = false

    self.showPicker(false) { (success) in

        if self.previousViewController != nil {
            self.remove(asChildViewController: self.previousViewController!)
        }

        switch self.selectedIndex {

        case 0:
            .....
            .....
            break

        case 1:
            .....
            .....
            break

        case 2:
            .....
            .....
            break

        case 3:
            .....
            .....
            break

        case 4:
            self.topSalesVC.salesBy = .invoiceByCustomer
            self.previousViewController = self.topSalesVC
            self.add(asChildViewController: self.topSalesVC)
            break

        case 5:
            self.topSalesVC.salesBy = .invoiceByUser
            self.previousViewController = self.topSalesVC
            self.add(asChildViewController: self.topSalesVC)
            break

        case 6:
            self.topSalesVC.salesBy = .supplier
            self.previousViewController = self.topSalesVC
            self.add(asChildViewController: self.topSalesVC)
            break

        case 7:
            self.topSalesVC.salesBy = .manufacturer
            self.previousViewController = self.topSalesVC
            self.add(asChildViewController: self.topSalesVC)
            break

        case 8:
            self.topSalesVC.salesBy = .masterProduct
            self.previousViewController = self.topSalesVC
            self.add(asChildViewController: self.topSalesVC)
            break

        case 9:
            self.topSalesVC.salesBy = .user
            self.previousViewController = self.topSalesVC
            self.add(asChildViewController: self.topSalesVC)
            break

        case 10:
            self.topSalesVC.salesBy = .customer
            self.previousViewController = self.topSalesVC
            self.add(asChildViewController: self.topSalesVC)
            break

        case 11:
            self.topSalesVC.salesBy = .customerTag
            self.previousViewController = self.topSalesVC
            self.add(asChildViewController: self.topSalesVC)
            break

        default:
            break
        }
    }
}

使用上述方法,从使用相同视图控制器的案例4到案例11,只需更改其变量值并将其添加到容器视图中。

我已经检查了TopSalesVC,那里的代码运行得非常好。所以TopSalesVC的代码没有问题。

请帮我解决这个问题。