How can I dismiss a modal segue then perform push segue to new view controller

5
votes

I'm trying to perform a push segue from a navigation controller, after dismissing a modal that was previously presented over the navigation controller.

Inside modal (UIViewController): 

func textFieldShouldReturn(textField: UITextField) -> Bool {
    var searchNav = SearchNavigationController()
    self.dismissViewControllerAnimated(true, completion: {searchNav.goToNextView()})
    return true
}

Inside SearchNavigationController:

func goToNextView() {
    performSegueWithIdentifier("searchNavigationToNextView", sender: self)
}

The issue is that when I hit return, I get this error:

Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: 'Receiver () has no segue with identifier 'searchNavigationToNextView''

The segue is present in my storyboard, going from the UINavigationController to the next view.

enter image description here

EDIT: tried this, where _sender is declared in SingleSearchViewcontroller as var _sender = self and it did not work.

override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
        if segue.identifier == "searchNavigationToSingleSearch" {
            let singleVC = segue.destinationViewController as! SingleSearchViewController

            singleVC._sender = self
        }
    }
2
iosswiftuiviewcontrolleruinavigationcontrollersegue
You need to call the segue from the appropriate controller that represents its origin. In this case you should probably call the segue on self and not the nav controller – Daniel Galasko
You can't cal a segue from UINavigationController, you should call it from the top controller of UINavigationController – jinhua liao
@jinhualiao that makes sense, but I just tried it and got the same error. could it have something to do with the fact that the error has an extra ' in it? Although that is not in my code... – mattgabor

2 Answers

2
votes

Update your code as,

func textFieldShouldReturn(textField: UITextField) -> Bool {
    var searchNav = SearchNavigationController()
    self.dismissViewControllerAnimated(true, completion: {self.presentingViewController.goToNextView()})
    return true
}
0
votes

I had the same issue that mattgabor had, and i tried Ashish's solution but it didn't work for me.

The problem i had in my code was that inside the completion block of "dismissViewControllerAnimated()", the propery "self.presentingViewController" was already nil when i wanted to call the method from my previous viewController that performed the push (the method "goToNextView()" in this example)

So my solution was just to create a variable to hold the previous viewController before calling "dismissViewControllerAnimated()". Using the current example, it would look like this:

    func textFieldShouldReturn(textField: UITextField) -> Bool {
    if let searchNav = self.presentingViewController as? SearchNavigationController {
        self.dismissViewControllerAnimated(true) {
            searchNav.goToNextView()
        }
    }
    return true
 }