I am trying to display a fix navigation bar for my UiTableViewController, I have a first ViewController and when I click on it, this will open my UITableViewController Here is the code of the click :
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyboard.instantiateViewControllerWithIdentifier("MyTableViewController") as! MyTableViewController
vc.myObject = object // I pass some data
presentViewController(vc, animated: true, completion: nil)
the UItableView is correctly display but not navigation bar appear, if I add one, the navigation bar scroll with the table view and I don't want this behavior.
I tried this without success :
Go to the Editor menu, and click on the Embed In submenu, and choose
Navigation Controller
And tried to change some settings here :
Actually, in your case you want to show navigation and for navigation you have to push your view controller to a UINavigationController thats why the solution is :
let vc = storyboard.instantiateViewControllerWithIdentifier("MyTableViewController") as! MyTableViewController
vc.myObject = object // I pass some data
self.navigationController?.pushViewController(vc, animated: true)
presentViewController offers a mechanism to display a modal view controller; i.e., a view controller that will take full control of your UI by being superimposed on top of a parent controller & establish a parent child relation b/w presenting & presented view controllers.
where as
pushViewController offers a much more flexible navigation process where you can push & pop a new controller to UINavigationController, so to go back to the previous one, in a ordered way. Imagine that controllers in a navigation controller will just build a sequence from left to right like building a stack of view controllers stacking upon each other.
Do it this way:
let vc = storyboard.instantiateViewControllerWithIdentifier("MyTableViewController") as! MyTableViewController
vc.myObject = object // I pass some data
self.navigationController?.pushViewController(vc, animated: true)
Related
I have the following storyboards:
"Home" is the default view controller. When you press the button in the top left with three lines, the menu view controller slides out (it's like a side menu). Within the menu there are four table cells that represent menu items, as you can see. When a cell is pressed, I have a corresponding function that is called. I want the view controller on the far right to be presented when a cell is pressed.
Here's the issue: I want the far right view controller to inherit the properties of the Home view controller, such that the navigation title and button are still there. How can I achieve this?
Here's the solution:
Make sure that the navigation and right view controller are segued (Ctrl + Drag in Interface Builder)
Call the code stated in #bebzerk answer:
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let transition = storyboard.instantiateViewController(withIdentifier: "RightViewController") as! RightViewController
navigationController?.pushViewController(transition, animated: true)
Now go back to Interface builder, and add a UINavigationItem and a UIBarButtonItem to the view controller. Set the image of the button to the three lines and set the title of the navigation item to the name you want displayed on the top.
In the ViewController Swift file for the right view controller, Ctrl + Drag the bar button item and create an IBAction function. This will be called when the menu button (on the far right view controller is pressed). For me, this class extends from HomeViewController, so in the function, just called the super method. It should look like this:
#IBAction override func menuTapped(_ sender: UIBarButtonItem) {
super.menuTapped(UIBarButtonItem())
}
This should achieve the desired function.
Did you try this way ?
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let transition = storyboard.instantiateViewController(withIdentifier: "RightViewController") as! RightViewController
navigationController?.pushViewController(transition, animated: true)
It should open your far right view controller and makes it inherit your home controller, like with a back button
Test it and tell me if it's good to you.
As you can see i have an initial view controller with label in it "Initial ViewController". In this view controller i use below code to go to selected tab of Tab Bar Controller
let vc1 = sb.instantiateViewController(withIdentifier: "tabbar") as! UITabBarController
vc1.selectedIndex = selected
let controllers = [vc1]
navigationController!.setViewControllers(controllers, animated: true)
In my First View, there's a button "Present VC" which presents "Presented View".
let vc1 = sb.instantiateViewController(withIdentifier: "PresentedVC") as! PresentedVC
present(vc1, animated: true, completion: nil)
Now i want to go back from presented vc to root vc(Initial View Controller). I can do this with:
let viewController = self.storyboard?.instantiateViewController(withIdentifier: "FirstNavigationController") as! FirstNavigationController
UIApplication.shared.keyWindow?.rootViewController = viewController
but this instantiate Initial View Controller every time and views remain in memory. How can i go back to Initial View Controller without instantiating it?
PS: FirstNavigationController is initial Navigation Controller.
At the very beginning you remove the initial view controller by doing this:
navigationController!.setViewControllers(controllers, animated: true)
All the previous viewControllers are gone now and replaced with the tabbar controller and its children.
If you want to go back to the initial controller, you will have to push the tabbar onto the stack instead of replacing everything with it. E.g.
navigationController?.pushViewController(tabbarVc, animated: true)
First when you did this
navigationController!.setViewControllers(controllers, animated: true)
the initial VC is deallocated (if it has not a strong references)
to keep it you can use push , pop instead of setViewControllers but note it may cause memory issues if you have heavy processing in your app as it will remain in navigationController stack
You are missing the concept between "Presenting" or "Setting" View Controller & "Navigating" the View Controller. You will get the answer, once you understood the concept. Here, it is..
When you are setting the ViewController, you are completely replacing the stack container to the new view controller. the way you did it here:
navigationController!.setViewControllers(controllers, animated: true)
In this case, STACK holds the addresses of the latest set/presented ViewControllers that means previous whole ViewController vanished.
On the other hand, if you are navigating to other view controller by pushing it. you can go back to previous controller by simple popping the ViewController address from stack. or to next ViewController by pushing
e.g:
self.navigationController?.pushViewController(tabbarVc, animated: true)
self.navigationController?.popViewController(animated: true)
Summary:
If you push TabBarController then, only you will get InitialVC.
Now, in your case, you are setting the ViewController and hence, you are not getting InivtialVC. Try Pushing tabbarVC This will work.
navigationController?.pushViewController(tabbarVc, animated: true)
I have two view controllers, I added navigation bar to second view controller with two bar button items Back and Item as shown below
But when I do a push segue from first view controller, it is replaced by navigation item <Category, which is title of navigation item in my first view controller as shown below
How do I keep my navigation bar intact avoiding the default navigation item <Category, which is being added automatically while maintaining push segue functionality.
I tried to do maually without using stoyboard as follows
#IBAction func plusAction(_ sender: Any) {
let secondViewController = self.storyboard?.instantiateViewController(withIdentifier: "SVC") as? SecondViewController
self.navigationController?.pushViewController(secondViewController!, animated: true)
}
but it still doesnt work.
You want to display two bar button items Back and Item by added UINavigationBar to second view controller, you are doing it in the wrong way!!!
In your storyboard, drag a UINavigationItem to your second ViewController.
If the UINavigationItem does not display on your storyboard, you must select second view controller, choose Opaque Navigation Bar or Translucent Navigation Bar (not important)
After that, you can drag UIBarButtonItem where you want on your ViewController
Have you tried changing the kind of segue through segue inspector (click the particular segue and check its attributes in the inspector) like this,
But you should know each one of it is not similar, has it's own definition in how it appears - check https://developer.apple.com/library/content/featuredarticles/ViewControllerPGforiPhoneOS/UsingSegues.html
Also, alternatively using code,
if let viewController = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "storyboardId") as? TargetViewController {
self.present(viewController, animated: false, completion: nil)
}
I have navigationController embedded VC(Viewcontroller) in storyboard 1 which is connected to storyboard reference of storyboard 2.
Now, I have VC2 which is again NavController Embedded in storyboard 2.
I am performing the following code :
let storyboard = UIStoryboard(name: "Settings", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: "setEdit") as? EditProfile
navigationController?.pushViewController(vc!, animated: true)
settings is storyboard 2, setEdit is ID from navigationController of the destination VC.
When I execute this code, It doesnt perform the presentation of new controller. Also, I have a custom segue class that transitions VCs from Right to Left.
when I use :
present(vc!, animated: true, completion: nil)
It just pushes the VC from bottom to top.
Now I am totally out of Ideas.
My query is:
How can I exactly implement custom segue from one storyboard to another, having navigation bar at the top.
When you use UINavigationController the transition is showed as you said from right to left (push), when you present a view controller modally the presentation style and the transition style are different. Now you cannot connect two navigation controllers, so I suggest to connect directly the controller in the settings storyboard without embedding it in another navigation controller. In settings storyboard you have to set your EditProfileVC as initial view controller and check its identifier and then you can push it from your first storyboard.
I have an existing UITableViewController that I've embedded in a NavigationController. However, the Navigation Bar is not showing when I present the view.
Presenting the TableViewController (its Storyboard id is: SelectServicesController) :
if let selectServicesController = self.storyboard?.instantiateViewControllerWithIdentifier("SelectServicesController") as? UITableViewController {
self.navigationController?.presentViewController(selectServicesController, animated: true, completion: nil)
}
This is what it looks like when I build (nav bar does not show):
So I just did this and at fist could not get it to show up at all. Then Figured it out, You just need to select the navigation controller and set it to be the ✅is initial View Controller
This is what your storyboard should look like
Then to make everything show up I added this to my viewDidLoad of the view the Navigation controller is presenting. This step is more optional.
self.navigationController?.navigationBar.barTintColor = UIColor.redColor()
self.navigationController?.navigationBar.tintColor = UIColor.blackColor()
self.navigationController?.navigationBar.titleTextAttributes = [NSForegroundColorAttributeName:UIColor.blackColor()]
navigationController?.navigationBar.hidden = false
And this is what it looks like
mmmm Red on black 🤓 Hope that helps you.
You're presenting a UITableViewController, which doesn't have a navigation controller as a parent (even though your Storyboard has it first, you're not actually using it).
You can fix this by doing something like this:
if let selectServicesController = self.storyboard?.instantiateViewControllerWithIdentifier("SelectServicesController") as? UITableViewController {
let navigationController = UINavigationController(rootViewController: selectServicesController)
self.navigationController?.presentViewController(navigationController, animated: true, completion: nil)
}
Or by setting the navigation controller as the initial view controller of the storyboard and then calling it like this:
if let selectServicesController = self.storyboard?.instantiateInitialViewController() {
self.navigationController?.presentViewController(selectServicesController, animated: true, completion: nil)
}
I encountered the same problem. I solved it by Changing the segue to the navigation controller that embeds the View Controller I want to display.
Hopefully it would work for you.
Let me know if it is a bad practice.
let storyboard = UIStoryboard(name: "Expense", bundle: Bundle(for: PTCAddExpenseViewController.self))
let controller = storyboard.instantiateViewController(withIdentifier:"AddExpense") as! PTCAddExpenseViewController
let navigationController = UINavigationController(rootViewController: controller)
self.present(navigationController, animated: true, completion: nil)
Adding this works for me:
self.navigationController?.isNavigationBarHidden = false
You're presenting the table view controller directly, not its navigation controller. If you mark the nav controller as the initial view controller (tick the "Is initial view controller" box in the attributes inspector), then you can instantiate and show it by:
if let selectServicesNavController = self.storyboard?.instantiateInitialViewController() as? UINavigationController {
// if you're pushing it onto an existing nav controller
self.navigationController?.presentViewController(selectServicesNavController, animated: true, completion: nil)
// if not (and this is probably the case), set the nav controller as your window's rootViewController
UIApplication.sharedApplication().keyWindow.rootViewController = selectServicesNavController
}
My guess is Xcode is ignoring the fact that your table view controller is embedded in navigation controller when presenting your table view controller with the following code:
if let selectServicesController = self.storyboard?.instantiateViewControllerWithIdentifier("SelectServicesController") as? UITableViewController {
self.navigationController?.presentViewController(selectServicesController, animated: true, completion: nil)
}
Instead, I would suggest you modify the Top Bar setting under Simulated Metrics to suit your needs or instantiate your navigation controller instead (the latter is preferred and recommended)
In your code, change this line
self.navigationController?.presentViewController(selectServicesController, animated: true, completion: nil)
to this
self.presentViewController(selectServicesController, animated: true, completion: nil)
I read in one of your comments you want to present the table view controller modally, with the navigation bar showing. We can do this using the Storyboard. From the view controller that should display this table view controller modally, Ctrl+Drag from the view controller to the Navigation Controller of the Table View Controller. Then, select Present Modally. Set an Identifier for the segue. Then, in your code for the view controller that is presenting the table view controller modally, call:
self.performSegueWithIdentifier("YourSegueIdentifier", sender: nil)
Another way to do this without having to use any code is if the modal presentation is being triggered by something like a button. Then, you can Ctrl+Drag from that button to the Navigation Controller and select Present Modally.
Or it might be this!!
I had the same problem: the navigation bar was showing on the root view in Storyboard, but when running the Simulator - there was no navigation bar at the top of the views. This solved it:
Navigation Controller > Navigation Bar > UNCHECK Translucent (it is checked by default). This did two things:
My Navigation Bar shows on all subsequent views.
The topmost subview is now at Y=0, and not Y=64.