When a user launches the app from a push notification I present one view controller, then push another. My code to present the first VC is as follows
let mainStoryBoard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let homeNav: UIViewController = mainStoryBoard.instantiateViewController(withIdentifier: "HomeNavController") as! UINavigationController
let homePageTableVC = mainStoryBoard.instantiateViewController(withIdentifier: String(describing: HomePageTableViewController.self)) as! HomePageTableViewController
homePageTableVC.tipToPresent = tipDay
homeNav.addChildViewController(homePageTableVC)
self.window = UIWindow(frame: UIScreen.main.bounds)
self.window?.rootViewController = homeNav
self.window?.makeKeyAndVisible()
The tipToPresent property is used by the homePageTableVC (in the viewDidLoad method) to then present the second VC, using this code:
if let tipDayToPresent = tipToPresent {
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let tipVC = storyboard.instantiateViewController(withIdentifier: String(describing: TipViewController.self)) as! TipViewController
tipVC.dayOfTip = tipDayToPresent
tipToPresent = nil
navigationController?.pushViewController(tipVC, animated: true)
}
This works well, but when I press the back button to return to the homePageTableVC, the navigation bar is blank. The title image, menu button, and right bar button that normally show up are not visible.
Any help is appreciated.
Good if solution by #augie works. I would suggest you should not change navigation stack when you handle push notification deep link. It should behave same as it does in normal app launch. By that way you don't need to handle any edge case and no need to set up different window.
Solution: Whenever someone click on push notification dismiss all presented controller and popToRootViewController and then navigate to desired screen.
Can you try changing this
homeNav.addChildViewController(homePageTableVC)
to this
homeNav.setViewControllers([homePageTableVC], animated: false)
I believe the problem is how you are adding your table on the navigation controller. Instead of making it your navigation's root viewcontroller you are adding it as a child vc.
Changing your code like this should work:
let mainStoryBoard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
// Remove type UIViewController
let homeNav = mainStoryBoard.instantiateViewController(withIdentifier: "HomeNavController") as! UINavigationController
let homePageTableVC = mainStoryBoard.instantiateViewController(withIdentifier: String(describing: HomePageTableViewController.self)) as! HomePageTableViewController
homePageTableVC.tipToPresent = tipDay
// Set controllers instead of adding child
homeNav.setViewControllers([homePageTableVC], animated: false)
self.window = UIWindow(frame: UIScreen.main.bounds)
self.window?.rootViewController = homeNav
self.window?.makeKeyAndVisible()
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'm using following code to programmatically navigate to another ViewController. It works fine, but it some how hides the navigation bar. How do I fix this? (the navigation bar is created by embeding the ViewController in the navigation controller if that matters.)
let storyBoard : UIStoryboard = UIStoryboard(name: "Main", bundle:nil)
let nextViewController = storyBoard.instantiateViewControllerWithIdentifier("nextView") as NextViewController
self.presentViewController(nextViewController, animated:true, completion:nil)
Swift 5
The default modal presentation style is a card. This shows the previous view controller at the top and allows the user to swipe away the presented view controller.
To retain the old style you need to modify the view controller you will be presenting like this:
newViewController.modalPresentationStyle = .fullScreen
This is the same for both programmatically created and storyboard created controllers.
Swift 3
With a programmatically created Controller
If you want to navigate to Controller created Programmatically, then do this:
let newViewController = NewViewController()
self.navigationController?.pushViewController(newViewController, animated: true)
With a StoryBoard created Controller
If you want to navigate to Controller on StoryBoard with Identifier "newViewController", then do this:
let storyBoard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let newViewController = storyBoard.instantiateViewController(withIdentifier: "newViewController") as! NewViewController
self.present(newViewController, animated: true, completion: nil)
SWIFT 4.x
The Strings in double quotes always confuse me, so I think answer to this question needs some graphical presentation to clear this out.
For a banking app, I have a LoginViewController and a BalanceViewController. Each have their respective screens.
The app starts and shows the Login screen. When login is successful, app opens the Balance screen.
Here is how it looks:
The login success is handled like this:
let storyBoard: UIStoryboard = UIStoryboard(name: "Balance", bundle: nil)
let balanceViewController = storyBoard.instantiateViewController(withIdentifier: "balance") as! BalanceViewController
self.present(balanceViewController, animated: true, completion: nil)
As you can see, the storyboard ID 'balance' in small letters is what goes in the second line of the code, and this is the ID which is defined in the storyboard settings, as in the attached screenshot.
The term 'Balance' with capital 'B' is the name of the storyboard file, which is used in the first line of the code.
We know that using hard coded Strings in code is a very bad practice, but somehow in iOS development it has become a common practice, and Xcode doesn't even warn about them.
You should push the new viewcontroller by using current navigation controller, not present.
self.navigationController.pushViewController(nextViewController, animated: true)
According to #jaiswal Rajan in his answer. You can do a pushViewController like this:
let storyBoard: UIStoryboard = UIStoryboard(name: "NewBotStoryboard", bundle: nil)
let newViewController = storyBoard.instantiateViewController(withIdentifier: "NewViewController") as! NewViewController
self.navigationController?.pushViewController(newViewController, animated: true)
So If you present a view controller it will not show in navigation controller. It will just take complete screen. For this case you have to create another navigation controller and add your nextViewController as root for this and present this new navigationController.
Another way is to just push the view controller.
self.presentViewController(nextViewController, animated:true, completion:nil)
For more info check Apple documentation:-
https://developer.apple.com/library/ios/documentation/UIKit/Reference/UIViewController_Class/#//apple_ref/doc/uid/TP40006926-CH3-SW96
OperationQueue.main.addOperation {
let storyBoard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let newViewController = storyBoard.instantiateViewController(withIdentifier: "Storyboard ID") as! NewViewController
self.present(newViewController, animated: true, completion: nil)
}
It worked for me when I put the code inside of the OperationQueue.main.addOperation, that will execute in the main thread for me.
All other answers sounds good, I would like to cover my case, where I had to make an animated LaunchScreen, then after 3 to 4 seconds of animation the next task was to move to Home screen. I tried segues, but that created problem for destination view. So at the end I accessed AppDelegates's Window property and I assigned a new NavigationController screen to it,
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let appDelegate = UIApplication.shared.delegate as! AppDelegate
let homeVC = storyboard.instantiateViewController(withIdentifier: "HomePageViewController") as! HomePageViewController
//Below's navigationController is useful if u want NavigationController in the destination View
let navigationController = UINavigationController(rootViewController: homeVC)
appDelegate.window!.rootViewController = navigationController
If incase, u don't want navigationController in the destination view then just assign as,
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let appDelegate = UIApplication.shared.delegate as! AppDelegate
let homeVC = storyboard.instantiateViewController(withIdentifier: "HomePageViewController") as! HomePageViewController
appDelegate.window!.rootViewController = homeVC
The above code works well but if you want to navigate from an NSObject class, where you can not use self.present:
let storyBoard = UIStoryboard(name:"Main", bundle: nil)
if let conVC = storyBoard.instantiateViewController(withIdentifier: "SoundViewController") as? SoundViewController,
let navController = UIApplication.shared.keyWindow?.rootViewController as? UINavigationController {
navController.pushViewController(conVC, animated: true)
}
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: