In my app I am using 'LGSideMenuController' for sidemenu. Now in my app 'loginviewcontroller' then 'otpviewcontroller' and then 'homeviewcontroller' and other 'viewcontroller'. now my side menu open in all viewcontroller after 'homeviewcontroller'. I am able to open side menu from 'homeviewcontroller'. but in other viewcontroller I am not.
I did code for open sidemenu in 'appdelegate.swift' and also in 'homeviewcontroller'.
in my appdelegate.swift my code for open sidemenu.
let storyBoard = UIStoryboard.init(name: "Main", bundle: nil)
let rootviewcontroller = storyBoard.instantiateViewController(withIdentifier: "HomeVC") as! HomeVC
let navigation = UINavigationController.init(rootViewController: rootviewcontroller)
let sideMenuVC = storyBoard.instantiateViewController(withIdentifier: "SideMenuVC") as! SideMenuVC
let sideMenuController = LGSideMenuController(rootViewController: navigation,
leftViewController: sideMenuVC,
rightViewController: nil)
sideMenuController.leftViewWidth = 280.0
sideMenuController.leftViewPresentationStyle = .scaleFromBig
self.window?.rootViewController = sideMenuController
self.window?.makeKeyAndVisible()
and in my homeviewcontroller i make code like this
#IBAction func sideMenuAction(_ sender: UIBarButtonItem) {
self.sideMenuController?.showLeftView(animated: true, completionHandler: nil)
}
it works in homeviewcontroller but other viewcontroller not working.
You need to use a Container View and make it the root controller. Then, you'd be able to achieve what you're trying to do
Related
I have 3 VC's (VC as in ViewController)
1 AuthViewController which is the entry point for the app and it checks if user is logged in else it displays the sign-in related views
2 HomeViewController is the main interface of the app landing page after the user has logged in
3 ListViewController which displays a list, invoked via a segue on HomeViewController.
I want to enable back navigation between ListViewController and HomeViewController via a Navigation Controller.
How can I achieve this If I have a Navigation controller whose root VC is HomeVC. how can I invoke it from my AuthVC so that it gets invoked with the Navigation controller.
I have tried to invoke the Navigation controller but did not work
I have also tried invoking the HomeVC by
let mainStoryboard = UIStoryboard(name: "Main", bundle: Bundle.main)
if let viewController = mainStoryboard.instantiateViewController(withIdentifier: "mainViewController") as? UIViewController {
viewController.modalPresentationStyle = .overCurrentContext
self.present(viewController, animated: true, completion: nil)
although I was able to invoke the HomeVC could not get the navigation buttons
How can I invoke HomeVC from the AuthVC without loosing the NavigationController
You need 1 navigation controller, not 3.
If you want to push a new controller, then use push method, not present.
The back button gets enabled automatically on the navigation bar if there are controllers in the navigation stack and the current controller is not a root view controller.
When coming from AuthViewController to HomeController, you should change the RootViewController. So that the user cant go back to the Auth screen. That would make no sense.
Once you are on HomeController, you can push other controller using the below code and it will add a back button to your controller automatically.
let mainStoryboard = UIStoryboard(name: "Main", bundle: Bundle.main)
if let viewController = mainStoryboard.instantiateViewController(withIdentifier: "mainViewController") as? UIViewController {
self.navigationController?.pushViewController(vc, animated: true)
}
You can also use the below extension:
extension UIViewController {
func pushVC(storyboardName : String, vcname : String) {
let vc = UIStoryboard.init(name: storyboardName, bundle: Bundle.main).instantiateViewController(withIdentifier: vcname)
vc.hidesBottomBarWhenPushed = true
self.navigationController?.pushViewController(vc, animated: true)
}
func popVC() {
self.navigationController?.popViewController(animated: true)
}
func makeRootVC(storyBoardName : String, vcName : String) {
let appDelegate = UIApplication.shared.delegate as! AppDelegate
let vc = UIStoryboard(name: storyBoardName, bundle: Bundle.main).instantiateViewController(withIdentifier: vcName)
let nav = UINavigationController(rootViewController: vc)
nav.navigationBar.isHidden = true
appDelegate.window?.rootViewController = nav // If using XCode 11 and above, copy var window : UIWindow? in your appDelegate file
let options: UIView.AnimationOptions = .transitionCrossDissolve
let duration: TimeInterval = 0.6
UIView.transition(with: appDelegate.window!, duration: duration, options: options, animations: {}, completion: 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 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'm trying to want to present/push a VC embedded in a NavController from AppDelegate. I previously used this code but somehow it's not working anymore:
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let VC = storyboard.instantiateViewControllerWithIdentifier("PendingRequest") as! PendingRequestVC
let navController = UINavigationController.self(rootViewController: VC)
let rootViewController = UIApplication.sharedApplication().keyWindow!.rootViewController
rootViewController!.presentViewController(navController, animated: false, completion: nil)
Other codes open my desired VC but not within a navigation pane. Any guidance would be appreciated.
Calling from AppDelegate after user interacts with push notification.
Edit:
I'm able to present the right VC by using this code:
let mainStoryboard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
if let viewController = mainStoryboard.instantiateViewControllerWithIdentifier("PendingNavController") as? UINavigationController {
if let yourViewController = viewController.topViewController as? PendingRequestVC {
//yourViewController.getRequestdata()
}
UIApplication.sharedApplication().keyWindow!.rootViewController = viewController;
}
But this code won't allow me to go back using the Close button on my NavBar.
My structure is as follow:
TabController -> NavController1 -> VC1 -> NavController1a -> VC1a
I'm trying to get to VC1a and be able to use the Closed button to go back to VC1
Add a UIButton in your presented ViewController's View. Following event will be performed by that button. You can dismiss your Navigation Controller this way
#IBAction func dismissViewController(sender: AnyObject) {
self.navigationController.dismissViewControllerAnimated(false, completion:nil);
}
I have the following ViewController structure, see image below.
Whenever I want to move from ViewController 1 to any of the other main controllers I use self.tabBarController?.selectedIndex = indexNumber
// for instance, this would take me to ViewController 3
self.tabBarController?.selectedIndex = 2
Based on the picture below, how can I go from ViewController 1 to TargetViewController programmatically when a button is tapped in ViewController 1?
FYI -
In the picture below I'm showing a button in ViewController 3 this is just to show the storyboard structure, the actual button-tap will happen in ViewController 1
EDIT:
Here is how you do it based on Prashant Tukadiya's answer.
ViewController 1
In ViewController 1 add the following in your tap event.
self.tabBarController?.selectedIndex = 2
let nav = (self.tabBarController?.viewControllers?[2] as? UINavigationController)
let vc = TargetViewController.viewController()
nav?.pushViewController(vc, animated: true)
TargetViewController
In your TargetViewController add the following class method.
class func viewController() -> TargetViewController {
let storyboard = UIStoryboard(name: "Main", bundle: nil)
return storyboard.instantiateViewController(withIdentifier: "targetViewControllerID") as! TargetViewController
}
Add targetViewControllerID in the Storyboard ID field.
I was facing same before a couple of days and finally, I got a solution maybe this will help you.
TabController.shared.tabcontroller.selectedIndex = 1
let navigation = TabController.shared.tabcontroller.selectedViewController?.navigationController
let SavedAddress = self.storyboard?.instantiateViewController(withIdentifier: "SavedAddressVC") as! SavedAddressVC
navigation?.pushViewController(SavedAddress, animated: true)
I have used the same solution. and this is the working code for me.
You can directly give identifier to the TargetViewController from storyboard and load from storyboard then and push or present it.
like add this method in your TargetViewController
class func viewController () -> TargetViewController {
let storyboard = UIStoryboard(name: "Main", bundle: nil)
return storyboard.instantiateViewController(withIdentifier: "yourIdentifer") as! TargetViewController
}
and on tap event
let vc = TargetViewController.viewController()
self.navigationController?.pushViewController(vc, animated: true)
EDIT
After reading comments got clear idea about your requirements
On button action from ViewController1, You want to goto TargetViewController but when press back you want back to viewController 3
Select particular index first
self.tabBarController?.selectedIndex = 2
After that you need to grab UINavigationController
let nav = (self.tabBarController?.viewControllers?[2] as? UINavigationController)
then Push ViewController
let vc = TargetViewController.viewController()
nav?.pushViewController(vc, animated: true)
Note: Don't forgot add identifier to storyboard to TargetViewController and also add class func viewController () -> TargetViewController method to TargetViewController
Hope it is helpful
In action function of a button in ViewController 1 , you can use this :
func presentMethod(storyBoardName: String, storyBoardID: String) {
let storyBoard: UIStoryboard = UIStoryboard(name: storyBoardName, bundle: nil)
let newViewController = storyBoard.instantiateViewController(withIdentifier: storyBoardID)
self.definesPresentationContext = true
self.present(newViewController, animated: true, completion: nil)
}
//usage
presentMethod(storyBoardName: "Main", storyBoardID: "TargetViewController")