When a push notification is received, I am trying to navigate to a table view controller (ReportTVC). The Hierarchy of the view controllers in my storyboard is as shown below.
TabBarController -> Navigation Controller (Storyboard ID: CasesNavController) -> TableViewController (CasesTVC) -> TableViewController (CaseSummaryTVC) -> TableViewController(ReportTVC)
The ReportTVC is being displayed with the navigation controller as expected, but when I navigate back to the CasesTVC, I should have a TabBar with the tabs, but this is missing.
Can someone please advise how I could resolve this ?
In AppDelegate.swift:
let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let navController = mainStoryboard.instantiateViewController as! UINavigationController
let reportTVC = mainStoryboard.instantiateViewController(withIdentifier: "ReportTVC") as! ReportTVC
reportTVC.obtainDoctorReport = true
reportTVC.caseId = caseId
navController.pushViewController(reportTVC, animated: true)
self.window?.rootViewController = navController
self.window?.makeKeyAndVisible()
The problem here is that you're setting the NavigationController to the as rootViewController you need to set the TabBarController as the root.
let mainStoryboard = UIStoryboard(name: "Main", bundle: nil)
let navController = mainStoryboard.instantiateViewController(withIdentifier: "Nav") as! UINavigationController
let tabController = mainStoryboard.instantiateViewController(withIdentifier: "Tab") as! UITabBarController
let reportTVC = mainStoryboard.instantiateViewController(withIdentifier: "ReportTVC") as! ReportTVC
reportTVC.obtainDoctorReport = true
reportTVC.caseId = caseId
navController.pushViewController(reportTVC, animated: true)
tabController.setViewControllers([navController], animated: false)
self.window?.rootViewController = tabController
self.window?.makeKeyAndVisible()
You shouldn't forget that you also need the add the other ViewControllers in the TabBarViewController.
Related
From a button action, I have presented a viewController, from that presented VC, add another button and on that button action added a childView like this -
let vc = UIStoryboard(name: "Profile", bundle: nil).instantiateViewController(withIdentifier: "APPopUpViewControllerViewController") as! APPopUpViewControllerViewController
self.addChild(vc)
vc.view.frame = self.view.frame
self.view.addSubview(vc.view)
vc.didMove(toParent: self)
All are working perfectly till now, but when i try to push a viewController from this child VC , it does not work. How can i push a viewController from a childView ??
Push viewController code -
let storyboard = UIStoryboard(name: "WPLogin", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: "WPSigninViewController") as! WPSigninViewController
self.navigationController?.pushViewController(vc, animated: true)
My guess is that self.navigationController is nil, so your optional chaining is failing.
You can try
print(parent)
print(parent?.navigationController)
self.parent?.navigationController?.pushViewController(vc, animated: true)
How do you present your ViewController ? If You have pushed it to a navigation controller, then your code is perfect and it should work I think.
If not, then try to present the WPSigninViewController modally as
let storyboard = UIStoryboard(name: "WPLogin", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: "WPSigninViewController") as! WPSigninViewController
self.present(vc, animated: true)
and It should work.
If ViewController is your rootController, you can add a NavigationController to it :
let viewController = ViewController(nibName: nil, bundle: nil)
let navigationController = UINavigationController(rootViewController: viewController)
self.window = UIWindow(frame: UIScreen.mainScreen().bounds)
self.window?.rootViewController = navigationController
self.window?.makeKeyAndVisible()
I am using SWRevealViewController in my app. Everything is fine except one thing.
Suppose there are A,B,C 3 items in my SWRevealViewController Menu. I want to open B item programatically using swift.
UPDATE: CODE
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let sw = storyboard.instantiateViewController(withIdentifier: "Reveal") as! SWRevealViewController
let destinationController = storyboard.instantiateViewController(withIdentifier: "VehicleList") as! VehicleList
let navigationController = UINavigationController(rootViewController: destinationController)
sw.pushFrontViewController(navigationController, animated: true)
You can have access to the main screen controller using frontViewController property of the SWRevealViewController like that:
let navigationController = revealViewController().frontViewController as? UINavigationController
navigationController?.pushViewController(viewController, animated: false)
You can replace the frontViewController using setFront(_:animated:) function of SWRevealViewController like:
revealViewController()?.setFront(viewController, animated: false)
This is complete solution two my question.
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let destinationController = storyboard.instantiateViewController(withIdentifier: "VehicleList") as! VehicleList
let navigationController = revealViewController().frontViewController as? UINavigationController
navigationController?.pushViewController(destinationController, animated: false)
Here is the code
let storyBoard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyBoard.instantiateViewController(withIdentifier: "homeTBC") as! UITabBarController
self.window?.rootViewController = vc
self.window?.makeKeyAndVisible()
cant figure it yet.
I have tried this code in My App for root view controller in app delegate working perfect:
As I think you are using this code in presented view controller or in presented navigation controller: Please send the scenario(Screen Shot) exact what you are doing?
var window: UIWindow?
window = UIWindow(frame: UIScreen.main.bounds)
window?.makeKeyAndVisible()
let storyBoard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyBoard.instantiateViewController(withIdentifier: "TabbarVC") as! TabbarVC
self.window?.rootViewController = vc
From Apple's Documentation
When creating windows, always set the window’s initial size and
specify the screen on which it is displayed.
Add the size:
self.window = UIWindow.init(frame: UIScreen.main.bounds)
Your complete code should be like that:
let storyBoard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyBoard.instantiateViewController(withIdentifier: "homeTBC") as! UITabBarController
self.window = UIWindow.init(frame: UIScreen.main.bounds)
self.window?.rootViewController = vc
self.window?.makeKeyAndVisible()
I have a UITabBarController and all my other view controllers are connected to it. Now I want to show one my controller as:
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc: ViewController = storyboard.instantiateViewControllerWithIdentifier("ViewController") as! ViewController
but when I tried to:
let rootViewController = self.window?.rootViewController as! UINavigationController
rootViewController.pushViewController(vc, animated: true)
it gave me the next error:
Could not cast value of type 'UITabBarController' (0x1a899b818) to 'UINavigationController'
Later I've tried to do:
let rootViewController = self.window?.rootViewController as! UITabBarController
but in this case I get
UITabBar has no member pushViewController
How can I show/push my ViewController so it will appear with UINavigationBar and inside of UITabBar?
You need to place each of your view controllers inside a navigation controller.
E.g. currently you have a TabBarViewController
and two view controllers:
ViewControllerA
ViewControllerB
What you need to do is to embed each of them inside a navigation controller so you would have:
UINavigationController -> ViewControllerA
UINavigationController -> ViewControllerB
In order to push a new controller you would do:
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc: ViewController = storyboard.instantiateViewControllerWithIdentifier("ViewController") as! ViewController
let navViewController = myTabBar.selectedViewController as? UINavigationController
navViewController?.pushViewController(vc, animated: true)
Could not cast value of type 'UITabBarController' (0x1a899b818) to 'UINavigationController'
Your root view controller is of type UITabBarController.
Therefore you have to use the appropriate methods of this class and not UINavigationController.
To set view controllers use either
var viewControllers: [UIViewController]? or
func setViewControllers([UIViewController]?, animated: Bool).
To have a navigation bar you have to instantiate a UINavigationController and add your view controller to this navigation controller.
Then add your navigation controller to your UITabBarController with via one of the above options.
If your class is UITabBarController
You can add this:
private func showViewController() {
let storyboard = UIStoryboard(name: "Main", bundle: nil)
guard let vc = storyboard.instantiateViewController(withIdentifier: "queueTableViewController") as? QueueTableViewController else { return }
let navVC = self.selectedViewController as? UINavigationController
navVC?.pushViewController(vc, animated: true)
}
This will allow you to go to any VC
The second solution is something like this.
Here You will show the last VC and from there push some VC.
guard let tabCount = viewControllers?.count, tabCount > 1 else { return }
selectedIndex = tabCount - 1
if let navigationController = viewControllers?[selectedIndex] as? UINavigationController {
if let accountVC = navigationController.visibleViewController as? FirstViewController {
let storyboard = UIStoryboard(name: "Main", bundle: nil)
guard let vc = storyboard.instantiateViewController(withIdentifier: "someViewController") as? SomeViewController else { return }
accountVC.navigationController?.pushViewController(vc, animated: true)
}
}
From appDelegate I want to access a view controller which is embedded with UINavigation controller.
How can I do so, knowing that I can directly access that view controller but in this case the navigation bar will not appear, therefore this is not what I want.
I have tried the code found below but it prompts a warning and a black screen is presented.
var storyboard1 = UIStoryboard(name: "Main", bundle: nil)
var viewController: ExamNav_ViewController = storyboard1.instantiateViewControllerWithIdentifier("ExamNav_ViewController") as! ExamNav_ViewController
var rootViewController = self.window!.rootViewController as! UINavigationController
// rootViewController.pushViewController(viewController, animated: true)
rootViewController.presentViewController(viewController, animated: true, completion: nil)
The warning is: Attempt to present PlayMyWay.ExamNav_ViewController: 0x14fd19b50 on UINavigationController: 0x14fd13a90 whose view is not in the window hierarchy!
window = UIWindow(frame: UIScreen.mainScreen().bounds)
let navController: UINavigationController = UIStoryboard(name: "Main", bundle:nil).instantiateViewControllerWithIdentifier("provaNavController") as UINavigationController
window?.rootViewController = navController
window?.makeKeyAndVisible()
More Click here to learn about that
var storyboard = UIStoryboard(name: "Main", bundle: nil)
var objOrderVC = storyboard.instantiateViewControllerWithIdentifier("ExamNav_ViewController") as! ExamNav_ViewController
let navig = UINavigationController(rootViewController: objOrderVC)
navig.setNavigationBarHidden(false, animated: false)
window?.rootViewController = navig