When presenting my viewcontroller this way I don't get a navigationbar, even though the viewcontroller is embedded in a navigation controller in the interface builder.
if let stockVC = storyboard?.instantiateViewController(withIdentifier: "Stock") as? StockTableViewController {
stockVC.stockToDisplay = commonData.stock.filter { $0.productID.contains(product) }
// No NavigationBar with this one
navigationController?.present(stockVC, animated: true)
// No NavigationBar with this one
self.present(stockVC, animated: true)
}
I know the navigationBar works, because if I set the ViewController as initial in the storyboard, it shows.
What am I doing wrong here?
When you present a view controller, it is not part of the current navigation stack. You need to create a new navigation controller with your stockVC contained in it, and present the new navigation controller:
if let stockVC = storyboard?.instantiateViewController(withIdentifier: "Stock") as? StockTableViewController {
stockVC.stockToDisplay = commonData.stock.filter { $0.productID.contains(product) }
let stockNavigationController = UINavigationController(rootViewController: stockVC)
self.present(stockNavigationController, animated: true)
}
Related
I want to append couple of viewcontrollers in array of viewcontroller of a navigation controller, then want push third viewcontroller of the same navigation controller.
My code is as follows
let navigationController = getCurrentNavController()
let listVC = UIStoryboard.loadListViewController()
navigationController.viewControllers.append(listVC)
let detailVC = UIStoryboard.loadDetailsViewController()
navigationController.viewControllers.append(detailVC)
let thirdVC = UIStoryboard.loadThird()
navigationController.pushViewController(thirdVC, animated: true)
The thirdVC is push on the navigation controller,
the problem is when i pop thirdVC,
I don't find detailVC or listVC.
Is this possible?
if yes please help.
Don't edit the viewControllers array directly. That is why the animated parameter exists.
A solution may be to add the viewControllers in between after 0.25 seconds (the duration of the push animation) by doing:
let navigationController = getCurrentNavController()
var viewControllers = navigationController.viewControllers
let listVC = UIStoryboard.loadListViewController()
viewControllers.append(listVC)
let detailVC = UIStoryboard.loadDetailsViewController()
viewControllers.append(detailVC)
let thirdVC = UIStoryboard.loadThird()
viewControllers.append(thirdVC)
navigationController.pushViewController(thirdVC, animated: true)
DispatchQueue.main.asyncAfter(now() + 0.25) {
navigationController.setViewControllers(viewControllers, animated: false)
}
As mentioned, you do not want to modify the navigation controller's viewControllers directly.
But, you also don't need to do any explicit "pushing":
let navigationController = getCurrentNavController()
let listVC = UIStoryboard.loadListViewController()
let detailVC = UIStoryboard.loadDetailsViewController()
let thirdVC = UIStoryboard.loadThird()
var vcs = navigationController.viewControllers
vcs.append(listVC)
vcs.append(detailVC)
vcs.append(thirdVC)
navigationController.setViewControllers(viewControllers, animated: true)
This will animate thirdVC in from the current view controller, just as if you had pushed it, but it will also insert listVC and detailVC into the navigation controller's stack so the "Back" button will take you through detailVC and listVC.
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
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 currently using a third party called "Form".
In my UIButton, I implement a method which initializes a custom view controller which is a subclass of FormViewController. I initialize FormViewController embedded in navigation controller.
In my FormViewController class, I tried below two methods but none of them did not work.
self.navigationController?.popViewControllerAnimated(true)
self.dismissViewControllerAnimated(true, completion: nil)
Codes for pressing a UIButton:
#IBAction func part1Pressed(sender: AnyObject) {
if let JSON = NSJSONSerialization.JSONObjectWithContentsOfFile("data.JSON") as? [String : AnyObject] {
let initialValues = [
"last_name" : "Nordman"]
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let viewContainerVC = storyboard.instantiateViewControllerWithIdentifier("viewContainerVC")
let sampleController = Part1_VC(JSON: JSON, initialValues: initialValues)
let rootViewController = UINavigationController(rootViewController: sampleController)
rootViewController.view.tintColor = UIColor(hex: "5182AF")
rootViewController.navigationBarHidden = false
FORMDefaultStyle.applyStyle()
FORMSeparatorView.appearance().setSeparatorColor(UIColor.clearColor())
self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
self.window?.rootViewController = rootViewController
self.window?.makeKeyAndVisible()
}
}
Thank you!
You are trying to dismiss the view controller when it wasn't presented in the first place.
Instead set the root view controller of the navigation controller to something else (e.g. the screen you want shown after you dismiss the form) and present your form view controller modally:
self.presentViewController(formVc, animated: true, completion: nil)
You can then dismiss the view controller as you intended when you are finished with the form.
I'm trying to show view controller which is 2nd view controller in a navigation view controller. What I want to show RegistraionViewController if join is tapped. Based on that. I push registrationViewController to the navigation Controller where LoginViewController is rootView Controller. Now the issue is when Join is Tapped. It Should show registrationView Controller but it shows Login screen and after a delay of about half second. It shows registration screen. My Code is as follows:
if let navC = self.selectedViewController as? UINavigationController
{
if let vc = navC.viewControllers.first as? LoginViewController
{
if let registerVC = self.storyboard?.instantiateViewControllerWithIdentifier("RegistrationViewControllerIdentifier") as? RegistrationViewController
{
var view = navC.view
vc.navigationController?.pushViewController(registerVC, animated: false)
}
}
}
I have also tried by changing the transition of views and giving animation time as 0. But no luck. Which is :
if let registerVC = self.storyboard?.instantiateViewControllerWithIdentifier("RegistrationViewControllerIdentifier") as? RegistrationViewController
{
UIView.animateWithDuration(0.0, animations: {
if let view = self.navigationController?.view
{
self.navigationController?.pushViewController(registerVC, animated: false)
UIView.setAnimationTransition(UIViewAnimationTransition.None, forView:view , cache: false)
}
}, completion: {
(value: Bool) in
})
}