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I want a my app can go to a first view controller when every time users want it.
So I want to create a function to dismiss all the view controllers, regardless of whether it is pushed in navigation controllers or presented modally or opened anything methods.
I tried various ways, but I failed to dismiss all the view controllers certainly. Is there an easy way?
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According to the View Controller Programming guide for iPhone OS, this is incorrect when it comes to dismissing modal view controllers you should use delegation. So before presenting your modal view make yourself the delegate and then call the delegate from the modal view controller to dismiss.
If you are working with simple push navigation controller and you want to go back to root view controller then you simply have to write _ = self.navigationController?.popToRootViewController (animated: true)
For reference, be aware that you might be dismissing the wrong view controller. For example, if you have an alert box or modal showing on top of another modal. (You could have a Twitter post alert showing on top of your current modal alert, for example). In this case, you need to call dismiss twice, or use an unwind segue.
For example, if you have an alert box or modal showing on top of another modal. (You could have a Twitter post alert showing on top of your current modal alert, for example). In this case, you need to call dismiss twice, or use an unwind segue.
1 embed the View you want to dismiss in a NavigationController 2 add a BarButton with "Done" as Identifier 3 invoke the Assistant Editor with the Done button selected 4 create an IBAction for this button 5 add this line into the brackets:#N#self.dismissViewControllerAnimated (true, completion: nil) More ...
Try This :
self.view.window?.rootViewController?.dismiss(animated: true, completion: nil) it should dismiss all view controllers above the root view controller.
If that doesn't work than you can manually do that by running a while loop like this.
func dismissViewControllers() { guard let vc = self.presentingViewController else { return } while (vc.presentingViewController != nil) { vc.dismiss(animated: true, completion: nil) } } It would dismiss all viewControllers until it has a presentingController.
Edit : if you want to dismiss/pop pushed ViewControllers you can use
self.navigationController?.popToRootViewController(animated: true) Hope it helps.
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