I have a UINavigation controller. The viewController contents is as follows
[RestaurantViewController, MenuViewController, ProductViewController]
In ProductViewController I call
self.navigationController?.present(sideViewController, animated:true, completion:nil)
This presents the view controller as expected. Now when I call self.dismiss/self.presentingViewController.dismiss from within sideViewController, the original NavigationController Resets to
[RestaurantViewController]
Why is this? I just want to dismiss and be returned to the presenting viewController
Why not just present the controller from ProductViewController using
self.present(sideViewController, animated:true, completion:nil)
Then dismiss using
self.dismiss(animated: true , completion: nil)
Other than that there could be many things that could cause your issues. If you want a navigation controller on the sideViewController then create a navigation controller and set sideViewController as the rootviewcontroller and present the navigation controller.
let nav = UINavigationController(rootViewController: //SideViewController)
self.present(nav, animated: true, completion: nil)
Related
I am trying present a navigation controller with UITabBarController, I am confused why UITabBarController's viewDidAppear is not called again after the navigation controller dismissed. How can I manage to do that?
Change presentation style to currentContext. For example:
let controller = ViewController()
controller.modalPresentationStyle = .currentContext //<-- Add this line
self.present(controller, animated: true, completion: nil)
I'm trying to dismiss viewcontroller presented as modal("Present Modally") and then popViewController in navigationController. Here is my storyboard, I want to go from QRScanner VC to Monitoring VC.
Here is how I'm presenting QRScanner VC in Add Device VC:
let storyboard = UIStoryboard(name: StoryboardIDs.MainStoryboard, bundle: nil)
let controller = storyboard.instantiateViewController(withIdentifier: VCIDs.QRDeviceScannerVC) as! QRDeviceScannerVC
controller.deviceName = deviceNameTxt.text
present(controller, animated: false, completion: nil)
Here is how I'm trying to go back to MonitoringVC:
self?.navigationController?.popViewController(animated:true)?.navigationController?.popViewController(animated: false)
Also tried:
self?.dismiss(animated: true, completion: {
self?.presentingVC?.navigationController?.popViewController(animated: false)
})
It always goes to the Add Device VC instead of Monitoring VC
Use an unwind segue, with the unwind target method located in the Monitoring VC. All the right stuff will just happen as if by magic.
You can try with
self?.dismiss(animated: false, completion:nil)
self?.presentingVC?.navigationController?.popViewController(animated: true)
Just check if you have reference to the navigation controller
I have a weird behavior when presenting UIViewControllers modally in iOS 13. The new presentation style that I've seen all across iOS 13 looks like this:
The presenting view controller appears behind the presented view controller. It is also shifted down to mimic a "stack"
Meanwhile, when presenting view controllers through my app, I keep getting this effect:
The presenting view controller doesn't move at all when presenting a new view controller
I use this code to present this view controller:
let controller = storyboard?.instantiateViewController(withIdentifier: "tutorial") as! TutorialController
controller.modalPresentationStyle = .pageSheet
controller.modalTransitionStyle = .coverVertical
present(controller, animated: true, completion: nil)
Here is my question:
I'm wondering why this is happening and if there is a way to present view controllers in the normal iOS 13 style (with the presenting view controller moving back).
Thanks in advance!
Turns out the problem was my view controller hierarchy. I was able to fix it by making the presenting view controller the root view controller of my app. First I set the background controller as the root view controller by calling
window.rootViewController = self
and then using my previous code
let controller = storyboard?.instantiateViewController(withIdentifier: "tutorial") as! TutorialController
controller.modalPresentationStyle = .pageSheet
controller.modalTransitionStyle = .coverVertical
present(controller, animated: true, completion: nil)
I presented the view controller. Thanks to everyone who tried to help!
I think the issue can be resolved by using vc.modalPresentationStyle = .fullScreen if there is not UINavigationController , otherwise you can use these codes as follows:
let navigationController = UINavigationController(rootViewController: vc)
navigationController.modalPresentationStyle = .fullScreen
present(vc, animated: true)
because With iOS 13 this is a new feature that Apple has changed the default presentation style of View Controllers to a modal sheet from fullscreen in iOS 12
Programmatically:
let vc = UIViewController()
vc.modalPresentationStyle = .fullScreen //or .overFullScreen for transparency
self.present(vc, animated: true, completion: nil)
From storyboard:
That's it. No need to play with root controller or window at all.
For reference, visit this article.
iOS13: Let's say you have 3 view controllers: FirstVC, SecondVC, ThirdVC
FirstVC presents SecondVC with the below code:
let secondVC = SecondVC()
secondVC.modalPresentationStyle = .fullScreen
firstVC.present(secondVC, animated: true, completion: nil)
SecondVC presents ThirdVC with the below code:
let thirdVC = ThirdVC()
secondVC.present(thirdVC, animated: true, completion: nil)
Changing secondVC's modalPresentationStyle to .currentContext solves the problem.
We can change it in the Inspector Tool Bar. To Achieve it: head over to the fifth section of Inspector Tollbar then change the Presentation field to Full Screen.
This should be the only property you need to set
presentedViewController.modalPresentationStyle = .automatic
Detailed in
https://developer.apple.com/videos/play/wwdc2019/224/
I am building a flow like this
FirstViewController -> SecondViewController - > Tab Bar View Controller (consists of 1. ThirdViewController and 2. FourthVIewController)
I am opening Tab Bar View Controller as a pop up form the SecondViewController. However, when I run (self.dismiss(animated: true, completion: nil)) on click of a button in ThirdViewController, it goes back to the FirstViewController.
I want to go back to the SecondViewController
Adding code.
This is how I open the tab bar view controller from my SecondViewController
let popupVC = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "tabBarVC") as! UITabBarController
self.addChildViewController(popupVC)
popupVC.view.frame = self.view.frame
self.view.addSubview(popupVC.view)
popupVC.didMove(toParentViewController: self)
And this is how I try to close the tab bar view controller form Third View Controller
self.dismiss(animated: true, completion: nil))
You added tabBarController in secondViewController as subView. So you need to remove that tabBarController view from super view.
For that, you need a tabBarController object.
self.tabBarController?.view.removeFromSuperview()
You can use a navigation controller in your flow, so when you are in ThirdViewController use this:
if let vc = self.storyboard?.instantiateViewController(withIdentifier: "second") as? SecondViewController {
self.navigationController?.popToViewController(vc, animated: true)
}
The below code was able to remove the tabview and take me back to the SecondViewController
self.tabBarController?.view.removeFromSuperview()
Switching to other item on UITabBar, where 0 insert index of UTTabBar item:
self.tabBarController?.selectedIndex = 0
I'm trying to make ViewController present after Modal dismiss
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let chatRoomVC = storyboard.instantiateViewController(withIdentifier: "ChatRoomVCId") as! ChatRoomVC
chatRoomVC.hidesBottomBarWhenPushed = true
chatRoomVC.passValue = passValue
self.dismiss(animated: true, completion: {
self.present(chatRoomVC, animated: true, completion: nil)
})
But it will return "whose view is not in the window hierarchy!" maybe it's present a view after the controller dismissed
Notice the self in self.present, what you are doing, is basically tell the vc that you are dismissing to present a new vc, thats wrong way to do, the correct way is tell it's PARENT vc to present a new vc, by using delegate/unwind to call the parent vc to present new vc
You are using self. It means you are dismissing the current view controller. It should be the parent view controller who will present a new view controller.
When present from "Controller_A" to "Controller_B"-> present it like given below
--- View Controller A ---
self.navigationController?.present(Controller_B, animated: true, completion: nil)
When you want to dismiss "Controller_B" and present "Controller_C" using Navigation controller
--- View Controller B ---
let presenController : UINavigationController = self.presentingViewController as! UINavigationController
presentingController.dismiss(animated: true, completion: {
presenController.pushViewController(Controller_C, animated: true)
})