Ios SWRevealViewController在展开可选值时意外发现nil

您好，在用户单击UIAlertView上的ok操作按钮后，我正在将用户重定向到其他控制器

     let successAlert = UIAlertController(title: "Success", message: Message.TRIPISLIVE, preferredStyle: UIAlertControllerStyle.Alert)

            let action = UIAlertAction(title: "OK", style: .Default) { (action) -> Void in
           let viewControllerYouWantToPresent = self.storyboard?.instantiateViewControllerWithIdentifier("MyTripsTableViewController")
  self.presentViewController(viewControllerYouWantToPresent!, animated: true, completion: nil)
            }
 successAlert.addAction(action)
 self.presentViewController(successAlert, animated: true, completion: nil)

单击“确定”后，我在重定向的secondViewController中遇到错误

override func viewWillAppear(animated: Bool) {
        super.viewWillAppear(animated);


         self.view.addGestureRecognizer(self.revealViewController().tapGestureRecognizer())
        if revealViewController() != nil {
            menuButton.target = self.revealViewController()
            menuButton.action = "revealToggle:"
            view.addGestureRecognizer(self.revealViewController().panGestureRecognizer())
        }
}

---

错误是致命错误：在展开可选值时意外发现为零

您是否可以尝试此操作，而不是

视图的代码将出现

   override func viewWillAppear(animated: Bool) {
            super.viewWillAppear(animated);

            if revealViewController() != nil {
                self.view.addGestureRecognizer(self.revealViewController().tapGestureRecognizer())
                menuButton.target = self.revealViewController()
                menuButton.action = "revealToggle:"
                self.view.addGestureRecognizer(self.revealViewController().panGestureRecognizer())
            }
    }

编辑

您可以在

viewController

func customLeftButtonAction() {
        self.revealViewController().revealToggleAnimated(true);
    }

然后修改

override func viewWillAppear(animated: Bool) {
                super.viewWillAppear(animated);

                if revealViewController() != nil {
                    self.view.addGestureRecognizer(self.revealViewController().tapGestureRecognizer())
                    menuButton.target = self
                    menuButton.action = #selector(self.customLeftButtonAction)
                    self.view.addGestureRecognizer(self.revealViewController().panGestureRecognizer())
                }
        }

编辑

您必须修改显示您的

viewcontrolleryyouwanttopresent

的表单，因此请使用此代码

let successAlert = UIAlertController(title: "Success", message: Message.TRIPISLIVE, preferredStyle: UIAlertControllerStyle.Alert)

            let action = UIAlertAction(title: "OK", style: .Default) { (action) -> Void in
           let viewControllerYouWantToPresent = self.storyboard?.instantiateViewControllerWithIdentifier("MyTripsTableViewController")
    self.revealViewController().setFrontViewController(viewControllerYouWantToPresent!, animated: false);
    self.revealViewController().revealToggleAnimated(true);
            }
 successAlert.addAction(action)
 self.presentViewController(successAlert, animated: true, completion: nil)

---

我希望这对你有帮助

是的，很有效，谢谢。。但问题是现在菜单汉堡按钮在这个控制器上不再工作了。你能写一个完整的代码或编辑我的吗。我是新来的，所以不明白我应该写些什么检查一下，我希望这能帮助你谢谢你。。。我应该在这里写什么？menuButton.action=#选择器（self.customLeftButtonAction）让我们来看看。