Passing data with segue through navigationController

Question

I\'m trying to push data from one viewController to another. I\'ve connected a viewController to another ViewController\'s navigationController and then set the identifier t

Answer 1

The destination view controller of the segue is the UINavigationController. You need to ask it for its top view controller to get to the real destination view controller:

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "showItemSegue" {
        let navController = segue.destination as! UINavigationController
        let detailController = navController.topViewController as! ShowItemViewController
        detailController.currentId = nextId!
    }
}