CODEWITHSUNDEEP
iosswiftuiviewcontrolleruistoryboard
Fabio ha
Fabio ha

Reputation: 583

How do I present a new UIViewController when Storyboard Refrences are used

So I am using some Storyboard References to bring in some structure. Now I am trying to change the ViewController from code, but I am not able to use a ViewController from a different Storyboard. My Code is currently looking like that:

func showCommunityDetail(){
    let storyBoard : UIStoryboard = UIStoryboard(name: "community", bundle:nil)
    let nextViewController = storyBoard.instantiateViewController(withIdentifier: "communityDetail") as! CommunityViewController
    self.present(nextViewController, animated:true, completion:nil)
}

The community Storyboard contains the communityDetail controller, but the view which is shown at the moment this code is executed, is in a different storyboard.

How can I present between different Storyboards?

Update

I updated my code to the following line:

  let detailViewController = UIStoryboard(name: "community", bundle: nil).instantiateViewController(withIdentifier: "communityDetail");

However, now i get a new error: whose view is not in the window hierarchy!

Upvotes: 0

Views: 115

Answers (2)

Praveen Kumar
Praveen Kumar

Reputation: 296

Just worked on the requirement you asked for and it is in swift 2.2. Try it out it works this way.

var nextViewController : CommunityViewController!
func showCommunityDetail() {
    let mainStoryboard = UIStoryboard(name: "community", bundle: nil)
    nextViewController = mainStoryboard.instantiateViewControllerWithIdentifier("communityDetail") as! CommunityViewController
    addChildViewController(nextViewController)
// Optionally you can change the frame of the view controller to be added
    nextViewController.view.frame = CGRect(x: 0, y: 0 , width: view.frame.width, height: view.frame.height)
    view.addSubview(nextViewController.view)
    nextViewController.didMoveToParentViewController(self)
}

Upvotes: 0

Pochi
Pochi

Reputation: 13459

To present a view controller in a different storyboard.

1) Make sure the "Initial View Controller" property is set for the entry ViewController in each of the storyboards.

Present it:

let vcToPresent = UIStoryboard(name: "StoryboardName", bundle: nil).instantiateInitialViewController();

// Ensure its of the type that you want, so that you can pass info to it
guard let specialVC = vcToPresent as? SpecialViewController else {
        return
    }

specialVC.someProperty = somePropertyToPass

self.present(specialVC, animated: true, completion: nil)

Edit:

To instantiate a different viewcontroller (other than the one who is marked as initial) the following method can be used:

func instantiateViewController(withIdentifier identifier: String) -> UIViewController

Link to the documentation: https://developer.apple.com/reference/uikit/uistoryboard/1616214-instantiateviewcontroller

Note that you MUST set an identifier on the interface builder for the viewcontroller you want to use this method with.

Upvotes: 1

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