swift - 点击表格 View 中的单元格时没有任何反应

Question

我创建了一个表格 View 菜单，我希望当您点击一个单元格时显示特定的 Storyboard。菜单由 4 个单元格格式化(因此有 4 个不同的 Storyboard)

这是我的代码:

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
        _ = tableView.indexPathForSelectedRow!
        if let _ = tableView.cellForRowAtIndexPath(indexPath){
        if indexPath.row == 0{
            print("User choose to buy ticket")
            self.storyboard?.instantiateViewControllerWithIdentifier("SearchPage")
        }else if indexPath.row == 1{
            print("User choose to check the train status")
            self.storyboard?.instantiateViewControllerWithIdentifier("TrainStatusPage")
        }else if indexPath.row == 2{
            print("User choose to see the upcoming trips")
            self.storyboard?.instantiateViewControllerWithIdentifier("TripsPage")
        }else if indexPath.row == 3{
            print("User wants to know mor about CFR's facility")
            self.storyboard?.instantiateViewControllerWithIdentifier("PassengersPage")
        }
        }
    }

当我按下单元格(无论哪个)时，单元格会变成灰色并且没有任何反应。

Answer 1

您可能计划导航到下一个 viewController？那么你需要这么说，初始化一个实例只是工作的一半(如果这确实是你想要做的)。所以东西如下所示:

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    var viewController: UIViewController?
    if indexPath.row == 0 {
        viewController = storyboard?.instantiateViewControllerWithIdentifier("SearchPage")
    }else if indexPath.row == 1 {
        viewController = storyboard?.instantiateViewControllerWithIdentifier("TrainStatusPage")
    }else if indexPath.row == 2 {
        viewController = storyboard?.instantiateViewControllerWithIdentifier("TripsPage")
    }else if indexPath.row == 3 {
        viewController = storyboard?.instantiateViewControllerWithIdentifier("PassengersPage")
    }

    if let destination = viewController {
        navigationController?.pushViewController(destination, animated: true)
    }
}