Swift:我想导航到多个 View Controller

Question

当我单击表行时，我想转到多个 View Controller 。所以我编写了如下代码。

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) 
{

        var targetId = ""
        var targetController: UITableViewController!

        switch indexPath.row {
        case 2:
            targetId = "TableView1"
            targetController = TableViewController1()
        case 2:
            targetId = "TableView2"
            targetController = TableViewController2()
        case 2:
            targetId = "TableView3"
            targetController = TableViewController3()
        default:
            return
        }

        let detailView = self.storyboard?.instantiateViewController(withIdentifier: targetId) as! targetController
        self.navigationController?.pushViewController(detailView, animated: true)

}

但我可以看到错误消息“使用未声明的类型'targetController'”。如何导航到多个 View Controller ？

Answer 1

您不能将对象强制转换为变量(实例)。

但是，如果所有 Controller 都是 UIViewController 的子类，则根本不需要类型转换

let detailView = self.storyboard?.instantiateViewController(withIdentifier: targetId)
self.navigationController?.pushViewController(detailView, animated: true)