I need to display from AppDelegate a table view embed to an UINavigationController.
Normally I use
let viewController: UIViewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewControllerWithIdentifier("prova") as ViewController
window?.rootViewController?.presentViewController(viewController, animated: false, completion: nil)
but it doesn't work with embed controller, how need to be adapted this code?
Here is a test project.
You need to instantiate the UINavigationController with its identifier from your storyboard. The navigation controller should be connected to its rootViewController in the storyboard and will automatically show it.
let navController: UINavigationController = UIStoryboard(name: "Main", bundle: nil).instantiateViewControllerWithIdentifier("provaNavController") as UINavigationController
window?.rootViewController?.presentViewController(navController, animated: false, completion: nil)
Update
Since you are not setting an initial view controller in the storyboard, use this code:
window = UIWindow(frame: UIScreen.mainScreen().bounds)
let navController: UINavigationController = UIStoryboard(name: "Main", bundle:nil).instantiateViewControllerWithIdentifier("provaNavController") as UINavigationController
window?.rootViewController = navController
window?.makeKeyAndVisible()
You also need to clear out Main.storyboard from the general project settings:
Related
I've created a tabbed application and am able to present a view modally using the code below, however, I'm stuck on dismissing the view and displaying the tab bar and first view controller.
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let signUpViewController = storyboard.instantiateViewController(withIdentifier:"SignUpViewController") as! SignUpViewController
self.window?.makeKeyAndVisible()
self.window?.rootViewController = signUpViewController
Inside that signUpViewController do this after giving that tabBarController a storyboard identifier in IB
let tab = storyboard!.instantiateViewController(withIdentifier:"tab")
UIApplication.shared.keyWindow?.rootViewController = tab
OR
(UIApplication.shared.delegate as! AppDelegate).window?.rootViewController = tab
You should present your modal vc over you tab bar vc
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let signUpViewController = storyboard.instantiateViewController(withIdentifier:"SignUpViewController") as! SignUpViewController
signUpViewController.modalPresentationStyle = UIModalPresentationStyle.fullScreen
signUpViewController.modalTransitionStyle = UIModalTransitionStyle.coverVertical
self.window.rootViewController.present(myModalViewController, animated: true, completion: nil)
(if self.window.rootViewController - your tab bar view controller)
And in this case you can use dismiss(animated: true, completion: nil) method in modal vc to dismiss it.
In your TabBarViewController, do the following when presenting SignUpViewController
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let viewController = storyboard.instantiateViewController(withIdentifier:"SignUpViewController")
viewController.modalPresentationStyle = .overFullScreen
self.presentViewController(viewController, animated:true)
and when dismissing, simply call the dismiss code from SignUpViewController
e.g. dismissViewControllerAnimated
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 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 want to create a Welcome & Guide page for an iOS app. I am using Swift 3. My problem is that when I try to show the Main.storyboard after finishing the Guide instructions, I get a black view instead of the Main.storyboard:
I use window?.rootViewController = ViewController()in AppDelegate.swift to switch a new ViewController which is linked with the Main.storyboard. But I get nothing except a black view.
If you have used storyboard then you will have to fetch your view controller as
let viewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "your_identifier_which_you_have_set_in_storyboard")
window?.rootViewController = viewController
If your viewController is embedded in UINavigationController then just make this change:
window?.rootViewController = UINavigationController(rootViewController: viewController)
try this one.
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let viewController = storyboard.instantiateViewController(withIdentifier: "MainVC")
window?.rootViewController = UINavigationController(rootViewController: viewController)
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