its shows two navigationBarControllers!
Top blue and below default NavigationBar.
var rootVC = CustomNavigationController()
let tabbarViewController = UIStoryboard(name: AppStoryboard.dashboard.rawValue, bundle: nil).instantiateViewController(withIdentifier: "TabBarViewController") as! TabBarViewController
rootVC = CustomNavigationController.init(rootViewController: tabbarViewController)
let appDelegate = UIApplication.shared.delegate as! AppDelegate
appDelegate.window?.rootViewController = rootVC
If you already have navigation controller before Tabbar, you dont need to create another navigation controller for each of viewController inside that Tabbar
Related
I am trying to skip the login screen and go straight to the MainViewController when the user is logged in. However the problem is that I have a Tab Bar Controller and Navigation Controller between the login and the main vc. After extensive search I wrote the below code
func showMainViewController() {
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let mainViewController: MainViewController = storyboard.instantiateViewController(withIdentifier: "MainViewController") as! MainViewController
let navigationController = UINavigationController(rootViewController: mainViewController)
//It removes all view controllers from the navigation controller then sets the new root view controller and it pops.
window?.rootViewController = navigationController
// //Navigation bar is hidden
// navigationController.isNavigationBarHidden = true
}
However it fails to show the tab bar view controller. Any help is appreciated.
try this
func showMainViewController() {
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let mainViewController: MainViewController = storyboard.instantiateViewController(withIdentifier: "TabBar")
window?.rootViewController = mainViewController
window?.makeKeyAndVisible()
}
you should instantiate TabBar no main viewController. since is instantiate inmediatrly is if first index or set the selected index
I am having a problem when performing segue from my AppDelegate. I am using this code to do a segue from appdelagate:
let storyboard = UIStoryboard(name: "MyStoryboard", bundle: nil)
let viewController: MyViewController = storyboard.instantiateViewController(withIdentifier: "myviewcontroller") as! MyViewController
let rootViewController = self.window!.rootViewController as! UINavigationController
rootViewController.show(viewController, sender: self)
When I use this, my UITabBar is removed. I want to segue to a ViewController that is not a TabBar item and retain my UITabbar. I am also using navigation. How should I approach this?
To show the tab , you need to do the push from 1 of the tab vcs , and it should be embeded inside a navigation and use
let nav = self.window!.rootViewController as! UINavigationController
if let tab = nav.viewControllers.first as? UITabBarController ,
let innerNav = tab.viewControllers.first as? UINavigationController {
innerNav.pushViewController(viewController,animated:true)
}
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.
I have some code to only show the first view controller in my storyboard on the first launch of the app. After that I want to skip that page and go straight to my second view on each launch. I have embedded the first view (which is connected to the second) in a navigation controller.
My issue is that after the first launch when the app goes to the second view directly it's showing the view without the navigation bar on top and I'm not sure why.
In my appdelegate:
func firstLaunchCheck(){
let launchedBefore = UserDefaults.standard.bool(forKey: "launchedBefore")
if launchedBefore{
let storyboard : UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let initialView : UIViewController = storyboard.instantiateViewController(withIdentifier: "mainScreen") as UIViewController
self.window = UIWindow(frame: UIScreen.main.bounds)
self.window?.rootViewController = initialView
self.window?.makeKeyAndVisible()
}
else{
UserDefaults.standard.set(true, forKey: "launchedBefore")
}
}
UPDATE:
I wound up just changing which view controller were embedded in the navigation controller (excluded the first one) since it didn't make sense to me to have it there. So now after the first launch it loads the navigation controller
SecondViewController is not added in UINavigationController hierarchy, to see the navigationBar on top you can push SecondViewController on firstVC if the launchedBefore is false in appDelegate
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let secondVC = storyboard.instantiateViewController(withIdentifier: "SecondViewController") as! SecondViewController
let navigationController = window.rootViewController as! UINavigationController
navigationController?.pushViewController(secondVC, animated: false)
You need to embed the second view controller i.e. "mainScreen" in UINavigationController and then make it the rootViewController of your app window.
let storyboard : UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let navigationController = UINavigationController.init(rootViewController: storyboard.instantiateViewController(withIdentifier: "mainScreen"))
self.window = UIWindow(frame: UIScreen.main.bounds)
self.window?.rootViewController = initialView
self.window?.makeKeyAndVisible()
I have just programatically embedded a tab bar controller into my app, however it seems to have forced my Storyboard embedded Navigation Bars to disappear, I assume this is because I have now set the rootviewController to be my tab bar.
I read the answer to this post as it seemed that the problem was similar, however doing so prompts me with the error Pushing a navigation controller is not supported
Below is my code written in AppDelegate, here I create my tab-view and a navigation controller to push to the root view controller:
// Set up the tab and navigation bar controllers
var currController = window?.rootViewController
let chatSB = UIStoryboard(name: "Chat", bundle: nil)
let mainSB = UIStoryboard(name: "Main", bundle: nil)
let tabBarController = UITabBarController()
var navigationController = UINavigationController(rootViewController: currController!)
let profileVC = mainSB.instantiateViewControllerWithIdentifier("profileVC") as TimelineTableViewController
let chatVC = chatSB.instantiateViewControllerWithIdentifier("chatInboxVC") as ChatInboxViewController
tabBarController.viewControllers = [profileVC, chatVC, navigationController]
window?.rootViewController = tabBarController
How would I go about fixing this issue?
If your desired view controllers are embedded in UINavigationController instances you need to instantiate those rather than the desired view controllers directly. The storyboard will take care of instantiating the embedded view controllers.
So, if your two navigation controller scenes have "profileNavController" and "chatInboxNavController" as their identifiers, your code would be -
// Set up the tab and navigation bar controllers
var currController = window?.rootViewController
let chatSB = UIStoryboard(name: "Chat", bundle: nil)
let mainSB = UIStoryboard(name: "Main", bundle: nil)
let tabBarController = UITabBarController()
var navigationController = UINavigationController(rootViewController: currController!)
let profileNavController = mainSB.instantiateViewControllerWithIdentifier("profileNavController") as UINavigationController
let chatNavController = chatSB.instantiateViewControllerWithIdentifier("chatInboxNavController") as UINavigationController
tabBarController.viewControllers = [profileNavController, chatNavController, navigationController]
window?.rootViewController = tabBarController