I have a custom UIStoryboardSegue class, and I am trying to transition views from the navigation controller, so that my navigation bar stays intact.
Currently, I am presenting the to view controllers with:
self.sourceViewController.presentViewController(self.destinationViewController as! UIViewController, animated: false, completion: nil);
I would like to use:
self.navigationController?.pushViewController(self.destinationViewController as! UIViewController, animated: false);
However, I don't have access to the navigationController object within the Segue class. Is there any way I can access the navigationController variable from within this class?
Try this if your controller is the first, if not then change it accordingly.
let nc = self.navigationController!.viewControllers!.first as destinationViewController
self.navigationController?.pushViewController(nc, animated: false)
Related
i have login view controller. when usersingin i' showing popup for that i
refereed
https://www.youtube.com/watch?v=S5i8n_bqblE i can achieved that.
popup had button when i click the button navigation to next view controller
but its now working when i am clicking that action is performing but its not navigating to next view controller wher i did mistake
Singin
class DigitalGateViewController: NANavigationViewController
{
#IBAction func singin(_ sender: UIButton)
{
let lv = NAViewPresenter().activityVC()
self.present(lv, animated: true)
}
}
this is popupviewcontroller
class ActivityViewController: NANavigationViewController {
#IBAction func okbuttonclick() {
let dv = NAViewPresenter().myGuestListVC()
// self.navigationController?.pushViewController(dv, animated: true)
}
}
its not push to textview controller in swift
When you present a view controller, its presented modally and is not pushed onto the previous navigation controller's stack. Hence, you tried to call self.navigationController?.pushViewController(), it doesn't work, because self i.e. NAViewPresenter().myGuestListVC() isn't embedded in a navigation Controller.
If you want to push the new VC onto the previous stack, you will have to dismiss the presented pop up and then push. The easiest way to do this is to use a delegate method.
Edit:
if you want to create a new navigationController, you can do something like this :
let navController = UINavigationController(rootViewController: NAViewPresenter().myGuestListVC())
present(navController, animated: true)
After presenting the navController, you can use self.navigationController.push method henceforth.
The reason why its not pushing because you are presenting it modally not pushing on the navigation stack and so it wont have any navigationController. If you want to push from your modal popup, you can access the property presentingViewController on your modal object and try to push it on navigationController from there.
self.presentingViewController?.navigationController?.pushViewController(myVC, animated: true)
dismiss(animated: true, completion: nil)
Is there a way to navigate from a UIView, which is part of a UIViewController, to another UIViewController neither using storyboards nor navigation controllers?
I have a UITapGestureRecognizer which I want to navigate to another UIViewController (BuyController()) whenever it is tapped once. Accordingly, my code looks like this:
//handle singleTap
func singleTapOnLikesDetected(_ sender: UITapGestureRecognizer) {
print("check") //works
let toController = BuyController()
BarController().pushViewController(toController, animated: true) //error occurs since BarController is no navigationcontroller
}
BarController (UITabBarController, UITabBarControllerDelegate) is my rootViewController in the AppDelegate.swift. The UIView however belongs to another UIViewController called HomeController (UIViewController, UIScrollViewDelegate). I do not use storyboards at all and I would like to keep it that way, as I am going to work on a project in a team (thus, a programmatic solution would be very welcome)...
You can simply do this to navigate, without using navigationController:
self.present(toController, animated: true, completion: nil)
Or Use this,
UIApplication.shared.keyWindow?.rootViewController?.present(toController, animated: true, completion: nil)
Only UIViewControllers can present other UIViewControllers not UIViews so your won't find the present method on the UIView. You also can't replace self with HomeController() because that creates a new HomeController with it's own UIView which hasn't been added to any other view (as the error suggests).
You have a couple of options really:
1) Create a protocol/delegate on your UIView and make the HomeController conform to it. Then the UIView can call the method in the protocol and the HomeController do the actual switching.
2) You could get the root view controller to present the new UIViewController like this: UIApplication.shared.keyWindow?.rootViewController?.present(viewController, animated: true, completion: nil)
From some ViewController of my UINavigationController stack I present another ViewController and will never come back, but the problem is that deinit{} is not called. How should I remove each ViewController from the stack before navigation? Or should I use some other method? Now my code looks like
let destinationVC = storyboard?.instantiateViewControllerWithIdentifier("revealViewController") as! SWRevealViewController
self.presentViewController(destinationVC, animated: true, completion: nil)
First of all, when you call presentViewController:animated:completion: you will present the new viewController modally, outside of the navigationController's hierarchy.
If you wish to present it within the navigationController hierarchy use:
self.navigationController!.pushViewController(destinationVC, animated: true)
And if you want to change the view hierarchy, the navigationController has a property viewControllers which can be set with or without animation.
self.navigationController!.setViewControllers([destinationVC],
animated: true)
See the iOS Developer Library for more information.
I want to use a third-party library which implements a nice tabbar controller. But it does all the work programmatically, basically all it does is create two uiviewcontrollers and add them to a tabbarcontroller, and then instantiate an uinavigationcontroller with the tabbarcontroller. In the last step, it assigns the uinavigationcontroller to the rootviewcontroller of the window like the following:
self.window?.rootViewController = getNavigationController()
But I want to use this navigationcontroller in a place other than the rootviewcontroller of the window, say like I want to push from another view and goes to this navigationcontroller. How can I achieve that?
You can present it modally over your current navigation controller from your current viewcontroller
let vc = myNavigationControllerWithTabBarControllerInside() //change this to your navigation controller
self.navigationController.presentViewController(vc, animated: true, completion: nil)
Please verify, for your self.navigationController to not be nil. otherwise, use
self.presentViewController(vc, animated: true, completion: nil)
i'm trying to pass Data to a viewController. The problem is that its embedded in a navigationController and is presented modally. How can i pass to a viewController which is presented modally and is embedded in a navigation Controller
func offerNew(sender: UIBarButtonItem) {
let offerVC = self.storyboard?.instantiateViewControllerWithIdentifier("OfferViewController") as UINavigationController
self.presentViewController(offerVC, animated: true, completion: nil);
}
i've tried this
let offerVC = self.storyboard?.instantiateViewControllerWithIdentifier("offerNavigation") as UINavigationController
let targetVC = offerVC.topViewController as OfferViewController
self.presentViewController(targetVC, animated: true, completion: nil);
I'm assuming that offerVC is the navigationController in which your "target" view controller is embedded. If so, your target view controller can be accessed through the topViewController property of offerVC. So
let targetVC = offerVC.topViewController as TargetViewController
will give you a reference. You can then access the properties of your target view controller.
EDIT
But you should present OfferVC - it will display targetVC automatically.
self.presentViewController(offerVC, animated: true, completion: nil);
You could add a property to your OfferViewController, then assign it. Your view initialization code would be done in loadView, which won't be called until after presentViewController, so not having it during init shouldn't be a problem in most cases.