When the function is done executing I want to go back to my ProfileTabViewController. I want to get sent back to the view controller keeping the ProfileTabViewControllers same navigation bar and UITabBarController from before. The way I have it now it gets sent to the ProfileTavViewController but I lose my navigation bar as well as the tab bar. How do I just send it back to the original ProfileTabViewController. The first image is the original ViewController and the second image is when it gets sent back.
#IBAction func updateAction(_ sender: Any) {
let newInterests = options.joined(separator: " , ")
if newInterests == ""{
showAlert(message: "Please select at least one interest.")
}else{
updateFunction()
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: "ProfileTabViewController") as! UIViewController
self.navigationController?.present(vc, animated: true, completion: nil)
}
}
While Presenting a ViewController it will not show navigationbar beacause presentation depends on UIViewController not NavigationViewcontroller.
You have to use popViewController method to get navigation bar.
for controller in self.navigationController?.viewControllers {
if controller is ProfileViewController {
self.navigationController!.popToViewController(controller, animated: true)
break
}
}
//Use Pop
Related
I have a Feedback View Controller that is accessed in 7 locations across 4 different screens.
One way it's presented in a navigationController via pushViewController. The other 6 times it's presented modally.
Here's the function that opens the Feedback VC's
struct Constants{
static func openFeedback(openFrom: UIViewController, nav:Bool) {
let fbStoryboard = UIStoryboard(name: "FeedbackViewController", bundle: nil)
let fbVC = fbStoryboard.instantiateViewController(withIdentifier: "FBSBID")
fbVC.modalPresentationStyle = .overFullScreen
fbVC.modalTransitionStyle = .crossDissolve
if nav {
openFrom.navigationController?.pushViewController(fbVC, animated: true)
} else {
openFrom.present(fbVC, animated: true, completion: nil)
}
}
}
The Feedback VC is called with either Constants.openFeedback(openFrom: self, nav: true) or Constants.openFeedback(openFrom: self, nav: false)
Opening the VC works just fine!
Here's my close button on the Feedback View Controller:
#IBAction func closeButtonPressed(_ sender: UIButton) {
self.dismiss(animated: true, completion: nil)
}
Which works 6 out of the 7 times, when not in the navigation stack. When it's in the navigation stack, the close button does not do anything.
My question is, how do I close out of the Feedback View Controller, based on if it's in the navigationController stack or not?
You can simply check if view controller is embedded inside UINavigationController by checking if controller's navigationController is nil or not.
So if it is embedded you can use popViewController(animated:) on navigation controller to "dismiss" pushed controller
if let navCon = navigationController {
navCon.popViewController(animated: true)
} else {
dismiss(animated: true)
}
I have read some answers like dismissing the current ViewController but my situation is different because I am presenting another ViewController.
This code presents the view controller with its navigation controller although I cannot access it's properties:
#IBAction func didTouchAddFriend(_ sender: UIButton) {
DispatchQueue.main.async {
let storyBoard = UIStoryboard(name: "CustomContact", bundle: nil)
let customContactVC = storyBoard.instantiateViewController(withIdentifier: "CustomContact")
}
}
While this one doesn't work
#IBAction func didTouchAddFriend(_ sender: UIButton) {
DispatchQueue.main.async {
let navigation = UIStoryboard.init(name: "CustomContact", bundle: nil).instantiateInitialViewController() as! UINavigationController
let pickerUserVC = navigation.viewControllers.first as! CustomContactsViewController
self.present(pickerUserVC, animated: true, completion: nil)
}
}
I have another story board named CustomContact.storyboard which containts a CustomContactsViewController
When I click the didTouchAddFriend, it just shows me this error:
'NSInvalidArgumentException', reason: 'Application tried to present modally an active controller <Main.MainViewController: 0x7ff29f06ac00>.'
I cannot understand the error cos when I printed the value of pickerUserVC, it show the right view controller:
<Main.CustomContactsViewController: 0x7fd1b7922400>
MainViewController is the current view controller implementing the didTouchAddFriend function
You ought to present the navigation controller (which hosts the CustomContactsViewController as it's root view controller).
Moreover, you can skip the Dispatch call, since we are in an #IBAction which already runs in the main thread:
#IBAction func didTouchAddFriend(_ sender: UIButton) {
let navigation = UIStoryboard.init(name: "CustomContact", bundle: nil).instantiateInitialViewController() as! UINavigationController
let pickerUserVC = navigation.viewControllers.first as! CustomContactsViewController
self.present(navigation, animated: true, completion: nil)
}
I have a few view controllers with navigation bar and tab bar. Then I have an initial view controller with no navigation bar and tab bar. I want to go back to the initial view controller with no other view controllers in stack. Here's what I do:
// Head back to Initial View Controller.
let initialViewController = self.storyboard!.instantiateViewController(withIdentifier: "Initial")
UIApplication.shared.keyWindow?.rootViewController = initialViewController
let appDelegate = UIApplication.shared.delegate as! AppDelegate
appDelegate.window?.rootViewController = initialViewController
This works perfectly. But then it doesn't move to another view controller from the initial view controller again. For example:
#IBAction func loginButton(_ sender: Any) {
print("Login Button Tapped.")
let storyboard = UIStoryboard(name: "SignInViewController", bundle: nil)
let signInViewController = storyboard.instantiateViewController(withIdentifier: "SignInViewController") as! SignInViewController
self.navigationController?.show(signInViewController, sender: nil)
}
Here, the print statement is run, but self.navigationController.show won't. How do all this work? And what's the right approach to accomplish this?
EDIT:
To avoid any confusion, here's my storyboard. The left most viewcontroller (pink screen) is the initial view controller I want to go back to. The right most on the same level is the view where I want to go back from.
It doesn't move to another view controller, because you are setting a simple view controller in your rootViewController.
What you need is:
let initialViewController = self.storyboard!.instantiateViewController(withIdentifier: "Initial")
let navController = UINavigationController.init(rootViewController: initialViewController)
UIApplication.shared.keyWindow?.rootViewController?.present(navController, animated: true, completion: nil)
This will create a navigationviewcontroller, so when on "Initial" you should be able to perform push, present actions of another view controllers.
From your initial view controller, you need to instantiate your navigation stack and present it modally. Then, when you want to get back to your pre-navigation initial VC, just call dismiss(animated:,completion:), which will dismiss your entire navigation stack and return you to the initial view controller.
self.navigationController.popToRootViewController(animated:) is what you're looking for.
https://developer.apple.com/documentation/uikit/uinavigationcontroller/1621855-poptorootviewcontroller
EDIT
Try dismissing the navigationController after calling popToRoot.
self.navigationController.dismiss(animated: true, completion: nil)
EDIT
Try the following:
#IBAction func loginButton(_ sender: Any) {
print("Login Button Tapped.")
let storyboard = UIStoryboard(name: "SignInViewController", bundle: nil)
let signInViewController = storyboard.instantiateViewController(withIdentifier: "SignInViewController") as! SignInViewController
present(signInViewController, animated: true, completion: nil)
//self.navigationController?.show(signInViewController, sender: nil)
}
Then to dismiss the signInViewController call self?.navigationController.dismiss(animated:true, completion:nil) from inside the signInViewController.
I have a view controller as my initial view controller.
there's a button in it(GO button) which when the user taps, it should go to another view controller(let's call it Destination view controller with label 'This is where i wanna go'). Meanwhile i want to pass it through a Tabbar controller. The reason is i want to have tabbar in my navigation stack and when users presses back on Destination view controller, it must go to tabbar controller. Picture shows what i want. what can I do to skip tabbar while having it in navigation stack?
You can do that easily inside the IBAction of GO button:
#IBAction func goTapped(_ sender: UIButton) {
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc1 = storyboard.instantiateViewController(withIdentifier: "myTabBarViewController")
let vc2 = storyboard.instantiateViewController(withIdentifier: "myGoalViewController")
let controllers = [vc1, vc2]
self.navigationController!.setViewControllers(self.navigationController!.viewControllers + controllers, animated: true)
}
Good luck!
Going to DestinationViewController could be manually:
if let destinationViewController = self.storyboard?.instantiateViewController(withIdentifier: "Storyboard ID of DestinationViewController") {
self.navigationController?.pushViewController(destinationViewController, animated: true)
}
(Alternatively, you could make a segue from FirstViewController to the DestinationViewController directly in Storyboard)
And in your DestinationViewController, insert the TabbarController to the Navigation sequence manually after view did appear, then you are able to go back to the TabbarController:
class DestinationViewController: UIViewController {
//......
override func viewDidAppear(_ animated: Bool) {
super.viewDidAppear(animated)
if self.isBeingPresented || self.isMovingToParentViewController {
var viewControllers = self.navigationController?.viewControllers
if let index = viewControllers?.endIndex.advanced(by: -1),
let tabBarController = self.storyboard?.instantiateViewController(withIdentifier: "Storyboard ID of TabBarController") {
viewControllers?.insert(tabBarController, at: index)
self.navigationController?.viewControllers = viewControllers!
}
}
}
//......
}
I'm trying to code a button that simply switches to the next view. So I embedded the first ViewController into a navigation controller then I dragged in another view controller, created a new class name ViewController2 and associated that class with the second ViewController and came the second view controller a storyboard id:"view2". Then in the Button's function I added this code:
#IBAction func newGamePressed(sender: AnyObject) {
let view2 = self.storyboard?.instantiateViewControllerWithIdentifier("view2") as
ViewController2
self.navigationController?.pushViewController(view2, animated: true)
}
However when i click on the button, literally nothing happens!!! what am i doing wrong???
#IBAction func newGamePressed(sender: AnyObject) {
let VC1 = UIStoryboard(name: "Main", bundle: nil).instantiateViewControllerWithIdentifier("view2")
let navController = UINavigationController(rootViewController: VC1)
self.presentViewController(navController, animated:true, completion: nil)
}
Just try with this code.