Swift通过导航控制器传递数据

Question

我的一个segue从视图控制器转换到tableview控制器.我想在两者之间传递数组,但在tableview控制器之前使用导航控制器,我无法弄清楚如何传递数组.如何通过navigatiom控制器将数据传递给tableview控制器？

Answer 1

覆盖prepareForSegue并设置您想要的tableview上的任何值.您可以从UINavigation viewControllers酒店获取tableview .

override func prepareForSegue(segue: UIStoryboardSegue!, sender: AnyObject!){

   let navVC = segue.destinationViewController as UINavigationController

   let tableVC = navVC.viewControllers.first as YourTableViewControllerClass

   tableVC.yourTableViewArray = localArrayValue   
}

对于Swift 3:

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {

   let navVC = segue.destination as? UINavigationController

   let tableVC = navVC?.viewControllers.first as! YourTableViewControllerClass

   tableVC.yourTableViewArray = localArrayValue   
}

Answer 2

@Tommy Devoy的答案是正确的,但在swift 3中这是同样的事情

更新了Swift 3

  // MARK: - Navigation

//In a storyboard-based application, you will often want to do a little preparation before navigation
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    // Get the new view controller using segue.destinationViewController.
    // Pass the selected object to the new view controller.


    if segue.identifier == "yourSegueIdentifier"  {

        if let navController = segue.destination as? UINavigationController {

            if let chidVC = navController.topViewController as? YourViewController {
                 //TODO: access here chid VC  like childVC.yourTableViewArray = localArrayValue 


            }

        }

    }

}

Answer 3

我把这个错误归咎于Horatio的解决方案.

ERROR: Value of type 'UINavigationController' has no member 'yourTableViewArray'

所以这可能会帮助像我这样的人寻找code唯一的解决方案.我想重定向到导航控制器,然后将数据传递到该Nav Controller中的根视图控制器.

if let controller = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "yourNavigationControllerID") as? UINavigationController,
   let yourViewController = controller.viewControllers.first as? YourViewController {
        yourViewController.yourVariableName = "value"
        self.window?.rootViewController = controller  // if presented from AppDelegate
        // present(controller, animated: true, completion: nil) // if presented from ViewController
}

Answer 4

Tommy的解决方案要求您在Storyboard中设置Segue.

这是一个仅限代码的解决方案:

func functionToPassAsAction() {
    var controller: UINavigationController
    controller = self.storyboard?.instantiateViewControllerWithIdentifier("NavigationVCIdentifierFromStoryboard") as! UINavigationController 
    controller.yourTableViewArray = localArrayValue
    self.presentViewController(controller, animated: true, completion: nil)
}

Answer 5

SWIFT 3（经测试的解决方案）-在VC之间传递数据-使用NavigationController进行Segue

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {

        let navigationContoller = segue.destination as! UINavigationController

        let receiverViewController = navigationContoller?.topViewController as ReceiverViewController

        receiverViewController.reveivedObject = sentObject 
    }

Answer 6

雨燕5

class MyNavigationController: UINavigationController {
    
    var myData: String!
    
    override func viewDidLoad() {
        if let vc = self.topViewController as? MyViewcontoller{
            vc.data = self.myData
        }
    }
    
}

   let navigation = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "MyNavigationController") as! MyNavigationController
   navigation.myData = "Data that you want to pass"
   present(navigation, animated: true, completion: nil)