DestinationViewController Segue and UINavigationController using swift

Question

Ive built a side menu that pop out when you click on a bar button item, After you click on one of the menu options the view controller load up with the right data but the bar button item is disappeared. so i made some research and i found out that the problem is my segue destination, My segue destination is the view controller and not the navigation controller so i try to change my code ending up with this:

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

        if let cell = sender as? UITableViewCell{
            let i = tableView.indexPath(for: cell)!.row
            if segue.identifier == "viewController"{

                let nav = segue.destination as! UINavigationController
                let addEventViewController = nav.topViewController as! ViewController

                addEventViewController.varView = i
                }  
            }
        }

And now i'm getting this error:

Thread 1: EXC_BAD_INSTRUCTION (code=EXC_I386_INVOP, subcode=0x0)

My storyboard:

Get rid of those ! Use conditional casting and the debugger to see what isn't what you think it is. — Paulw11
@AhmetUstem in this line let nav = segue.destination as! UINavigationController — Ben Shabat
You probably won't be able to use segues to build a side menu. You will probably just have to manipulate the view hierarchy as required. You could make your main view controller a container view and just set the active view controller into that — Paulw11
You edited the question and changed it to something completely different - people already wrote answers and comments to your question and now their answers are no longer relevant. You should revert your edits and open a NEW question. — Moshe Gottlieb

Rakesh Patel Rakesh Patel · Accepted Answer · 2018-05-02T13:18:41

Please update your code as below. Here sharedAppdelegate() is shared instance of appdelegate

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

    if let cell = sender as? UITableViewCell{
        let i = tableView.indexPath(for: cell)!.row
        if segue.identifier == "viewController"{

            let yourDestinationController = segue.destination as! ViewController
            let nav = UINavigationController.init(rootViewController: yourDestinationController)
            let win = AppDelegate.sharedAppdelegate().window
            win.rootViewController = nav
            win?.makeKeyAndVisible()
            addEventViewController.varView = i
            }  
        }
    }

In your Appdelegate add below method

 static func sharedAppdelegate() -> AppDelegate
{
    return UIApplication.shared.delegate as! AppDelegate
}

DestinationViewController Segue and UINavigationController using swift

2 Answers