I'm using https://github.com/jonkykong/SideMenu for my Swift 4 application. It's working good, but I have problems to display a new ViewController programmatically and the NavigationController.
If I use:
let vc = MyViewController.self() //your view controller
self.present(vc, animated: true, completion: nil)
All the IBOutlet are nil and the ViewController is not loaded.
And the same happens with:
let vc = MyViewController()
self.navigationController?.pushViewController(vc, animated: true)
How I can display a new ViewController keeping the Navigator of the SideMenu?
If you are not creating the VC's view programmatically in code , you have to load it either from storyboard
let yourVC = storyboard.instantiateViewController(withIdentifier: "YourVC") as! YourVC
or nib
let yourVC = YourVC(nibName: "YourVCNibName", bundle: nil)
I would like to jump from a viewController to the first viewController related to Tab Bar Controller through code.
The tabBarController Scene has storyboard id tabView.
I'm working on this way:
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc: UITabBarController!
storyboard.instantiateViewController(withIdentifier: "tabView")
vc=storyboard.instantiateViewController(withIdentifier: "tabView") as! UITabBarController
DispatchQueue.main.asyncAfter(deadline: .now() + 0.3) {
self.present(vc as! UIViewController, animated: true, completion: nil)
}
But it loads only the first viewController (out of 5) without the tab bar related to. How can I solve it?
Oh, this code looks so wrong.
In your storyboard give and "tabView" ID to the TabBarController, not the ViewController inside it.
Why you are double instantiating ViewController? just do it once and assign it to the vc variable.
Why you've created delay before presenting the VC? It's some sort of workaround of something?
Working code:
let vc = storyboard.instantiateViewController(withIdentifier: "tabView") as! UITabBarController
self.present(vc, animated: true)
Use
(1)if you want to navigate from Appdelegate
let appDelegate = UIApplication.sharedApplication.delegate as! AppDelegate
let mainStoryboard = UIStoryboard(name: "Main", bundle: nil)
let tabBar = mainStoryboard.instantiateViewControllerWithIdentifier("TabBarController") as! TabBarController
appDelegate.window?.rootViewController = tabBar
appDelegate.window?.makeKeyAndVisible()
(2)if you want to navigate from viewcontroller which has root of navigation
self.navigationController?.pushViewController(tabBar, animated: true)
I'm running into this issue when I'm opening a new View Controller programmatically.
let controller = self.storyboard?.instantiateViewController(withIdentifier: "overViewScreen") as! OverviewViewController
controller.user = self.userObject
let navigationController = UINavigationController(rootViewController: controller)
self.present(navigationController, animated: true, completion: nil)
The structure of my project :
storyboard
On my storyboard the tab bar is shown onto the View Controller (with the table on the right), but when I run the app it looks like this :
enter image description here
I hope you guys can help me out!
Thank you.
You are presenting NavigationController without tab bar controller. You need to present TabBarController.
Give your TabBarController identifier and instantiate them just like you've done with controller
code from comment:
let tabVC = UIStoryboard(name: "NameOfYourStoryboard", bundle: Bundle.main).instantiateInitialViewController() as! UITabBarController
let navVc = tabVC.viewControllers.first as! UINavigationController
let vc = navVc.viewControllers.first as! OverviewViewController
vc.incorrectAuthorization = SettingsAuthorizationMethod.fingerprint
vc.user = self.userObject
present(navController, animated: true, completion: nil)
Ok, I managed to fix it like this :
let vc = self.storyboard?.instantiateViewController(withIdentifier: "TabBarController") as! TabBarController
vc.user = self.userObject
let nvc = UINavigationController(rootViewController: vc)
self.present(nvc, animated: true, completion: nil)
I made a seperate controller class "TabBarController", and added a property "user" to this class. In my "OverViewController" I can get the property as follows :
let tabBar: TabBarController = tabBarController as! TabBarController
user = tabBar.user
Thanks for the help!
I am trying to present the account viewcontroller on other storyboard. But when i present it, the the Tabbar doesn't shows up.
This is my code on the other storyboard that i would like when a button is pressed on the other storyboard it goes to the account viewcontroller (See on the picture) Sorry for my english. Thanks
let storyboard : UIStoryboard = UIStoryboard(name: "UnitedArabEmirates", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: "UAE")
self.present(vc, animated: true)
Edit: Sorry for the wrong question. Let me rephrase it. Sorry i am new to programming and swift.
This is my 1st storyboard that when i tapped the "Upload CV" it goes to the the 2nd storyboard and presents my AccountViewController or as it is named identifier as "Account" but when i try to present it, the tabbar that contains the 3 tabbar items doesn't shows up. Just the navigationbar. How can i present the AccountViewController that has a the 3 tabbar items. Thank you so much for your responds.
Here is my first storyboard
Here is my second storyboard
and here is the code that presents my AccountViewController when i tapped the upload CV
let storyboard : UIStoryboard = UIStoryboard(name: "UnitedArabEmirates", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: "Account")
self.present(vc, animated: true)
let storyboard : UIStoryboard = UIStoryboard(name: "UnitedArabEmirates", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: "UAE")
self.navigationcontroller.present(vc, animated: true)
Please try this.
Give ViewController as a NavigationController then present it. It will show the tab bar.
let vc : YourViewController = self.storyboard!.instantiateViewController(withIdentifier: "UAE")as! YourViewController
let navController = UINavigationController(rootViewController: vc) // Creating a navigation controller with VC1 at the root of the navigation stack.
self.present(navController, animated: true, completion: { _ in })
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)
}