Question

我在我的应用程序中有tableview，我想在tableview的单元格点击上推送一个新的视图控制器，但它不起作用。

    func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    tableView.deselectRowAtIndexPath(indexPath, animated: true)
    let section = indexPath.section
    let controller : ProductInfoViewController = self.storyboard?.instantiateViewControllerWithIdentifier("ProductInfoViewController") as! ProductInfoViewController
    controller.product = TableData[section]
    self.navigationController?.pushViewController(controller, animated: true)
     print("clicked section : \(section)")
   // print(TableData[row])
}

有人知道我在这做什么错吗？我在故事板中有适当的视图控制器ID。控制台也没有错误。

Answer 1

如果你的navigationController是nil那么你没有任何导航堆栈来推动viewcontroller on.It看起来你正在使用storyboard所以将这个控制器嵌入到navigationcontroller中。为此在storyboard中选择这个视图控制器点击顶部菜单中的“Editor”转到“嵌入”并选择navigationcontroller ...希望它有所帮助：）

Answer 2

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
    tableView.deselectRowAtIndexPath(indexPath, animated: true)
    let section = indexPath.section
    let controller : ProductInfoViewController = self.storyboard?.instantiateViewControllerWithIdentifier("ProductInfoViewController") as! ProductInfoViewController
    controller.product = TableData[section]

    // execute in main thread
    dispatch_async(dispatch_get_main_queue()) { () -> Void in
        self.navigationController?.pushViewController(controller, animated: true)
    }


     print("clicked section : \(section)")
   // print(TableData[row])
}

Answer 3

为第二个视图控制器创建一个swift文件（SecondViewController.swift），并在相应的函数中输入：

let secondViewController = self.storyboard.instantiateViewControllerWithIdentifier("SecondViewController") as SecondViewController

self.navigationController.pushViewController(secondViewController, animated: true)

Answer 4

如果您的self.navigationController即将出现，则意味着您的视图控制器未添加到导航堆栈中。因此您必须在didFinishLaunchingWithOptions中编写代码：方法

  func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject : AnyObject]?) -> Bool {
    // Override point for customization after application launch.
    self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
    self.viewController = ViewController()
    self.navigationController = UINavigationController(rootViewController: self.viewController)
    self.window.rootViewController = self.navigationController!
    self.window.makeKeyAndVisible()
    self.navigationController.navigationBar.hidden = true
    return true
}

试试这可能会对你有所帮助： -

Answer 5

使用故事板名称并检查您将设置故事板ID，我的代码在下面，

        let storyboard = UIStoryboard(name: "Main", bundle: nil)
        let controller = storyboard.instantiateViewControllerWithIdentifier("PlayViewController") as! PlayViewController
        controller.titleLabel = (myArrayOfDict[indexpath.section].valueForKey("Title") as? String)!

        self.navigationController?.pushViewController(controller, animated: true)

希望它有用

单击表格视图中的单元格并未导航到swift中的新控制器

5 个答案: