I've separated my views into multiple storyboards to make managing the project as a team much easier. The only problem is that I want to have the navigation bar across all of my different view controllers. I embedded the first view controller in a navigation controller which added the navigation bar. In my second storyboard, I wanted to constrain a view to the navigation bar, however, since this view controller isn't embedded in a navigation controller, there isn't anything to constrain the view to. I put a navigation bar without a navigation controller to constrain to, however, when I perform the segue from the first storyboard, this results in two navigation bars. How do I make this so that I can constrain the view to the navigation bar without having two of them? Thanks in advance!
You can go from on view controller to another by three way:-
First using segue as you are already doing
second You can Present your view controller by
let storyboard = UIStoryboard(name: "MyStoryboardName", bundle: nil)
let controller = storyboard.instantiateViewController(withIdentifier: "someViewController")
self.present(controller, animated: true, completion: nil)
Third You can Navigate View controller by
let storyboard = UIStoryboard(name: "MyStoryboardName", bundle: nil)
let controller = storyboard.instantiateViewController(withIdentifier: "someViewController")
self.navigationController?.pushViewController(controller, animated: true)
I'm not sure your problem. I guess that you want to use ONE navigation bar to constrain many UIViewController in different Storyboard. Here is my answer.
Step 1: Set up Storyboard ID in each UIViewController
Step 2: push new UIViewController
func switchNextView() {
let storyboardName:String = "xxxxxx"
let storyboardId:String = "xxxxx"
let storyboard = UIStoryboard(name: storyboardName, bundle: nil)
let vc: UIViewController =
storyboard.instantiateViewController(withIdentifier: storyboardId) as!
UIViewController
self.navigationController?.pushViewController(vc, animated: true)
}
Related
the thing is im new to ios development this is my second application while working on the first one i mainly used a theme and then worked over it but this one im working from scratch.
My main problem is going from one screen to another
When i use this code it works
let storyBoard : UIStoryboard = UIStoryboard(name: "Main", bundle:nil)
let nextViewController = storyBoard.instantiateViewController(withIdentifier: "servicesScreen") as! ServiceViewController
nextViewController.modalPresentationStyle = .fullScreen
self.present(nextViewController, animated:true, completion:nil)
But i need to use this one so i can go back too but this wont do anything
let storyBoard: UIStoryboard = UIStoryboard(name: "Main", bundle: nil)
let newViewController = storyBoard.instantiateViewController(withIdentifier: "servicesScreen") as! ServiceViewController
self.navigationController?.pushViewController(newViewController, animated: true)
My question is, am i doing anything wrong here or do i need to add something in scenedeligate?
try
select Main.storyboard
select initial view Controller
select editor -> Embed in -> navigation controller.
For this, you need to add navigation controller to initial storyboards.
If you are using navigationController you need to add a navigation controller first on storyboard or programmatically.
Programmatically add navigation controller check this link:-
Creating a navigationController programmatically (Swift)
or
To add navigation controller on storyboard you should follow this link:-
https://developer.apple.com/library/archive/referencelibrary/GettingStarted/DevelopiOSAppsSwift/ImplementNavigation.html
If you have added navigation controller to your app then make sure your intialViewController is set to navigation controller or your navigation controller is added to the stack when you run your application.
Also check for "Is the identifier correct? Did you reference the correct storyboard?".
I am using this code
let storyboard = UIStoryboard.init(name: "Main", bundle: nil)
let controller = storyboard.instantiateViewController(withIdentifier: "PrintMainViewController")
self.navigationController!.pushViewController(controller, animated: true)
and also added:
self.tabBarController?.tabBar.isHidden = false
If I understand your hierarchy correctly you have a tab bar controller which has navigation controllers in it. So basically any of the tabs can push additional view controllers and tab bar is still visible.
Now you want to push some new controller on the currently selected view controller in the tab bar and you want to do it from another part of the app, another view controller that has no relation to tab bar.
The quickest way to do that is to expose a static instance of your tab bar view controller. This will only work if you always have only 1 tab bar controller in your application (probably 99% of the applications).
First add a current instance to your tab bar view controller:
class MyTabBarViewController: UITabBarController {
static private(set) var currentInstance: MyTabBarViewController?
override func viewDidLoad() {
super.viewDidLoad()
MyTabBarViewController.currentInstance = self
}
}
So when view loads a static value is assigned and can now be accessed anywhere in your project via MyTabBarViewController.currentInstance.
The rest is then just accessing the currently selected view controller and pushing a new view controller. Something like this should do:
let storyboard = UIStoryboard.init(name: "Main", bundle: nil)
let controller = storyboard.instantiateViewController(withIdentifier: "PrintMainViewController")
(MyTabBarViewController.currentInstance?.selectedViewController as? UINavigationController)?.pushViewController(controller, animated: true)
You must push in TabBarController
self.tabBarController?.pushViewController(controller, animated: true)
I am working with UISplitViewController. I have UISplitViewController which contain UITabBarController. So I want to display tab bar in all the screen through out the application (Even in detail screen of UISplitViewController for iPhone). Please see the approach:
use segue to move from one controller to another controller or move via navigation so in the next controller your tabbar will be show
just like if u want to move from A to B Controller set stroyboard id ie "SecondVc"
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let vc = storyboard.instantiateViewController(withIdentifier: "SecondVc")
self.navigationController?.pushViewController(vc, animated: true)
or just make connection using storyboard
I have created a TabBarController with 4 UIViewControllers. However, when I want to show one of the ViewControllers in the TabBarController with:
func gotoMainAppVC()
{
let mainVC:SearchVC = SearchVC()
self.present(mainVC, animated: true, completion: nil)
}
I only get a plain black screen. What am I doing wrong?
This is not how any of this works.
I am not sure what self is in your context but I expect it is either a tab bar controller or one of the view controllers on the tab bar.
By calling present it means you want to present a view controller on a current one which by default brings a new fullscreen view controller from bottom upwards.
Since you have created a new instance of view controller by calling SearchVC() this is not the view controller that you see in your storyboard. You may create any instances of any of your view controllers but in your case if you designed SearchVC in a storyboard you want to actually use that version of it. To do so you need to set storyboard id inside your storyboard. After you have done that you should initialise it as using:
UIStoryboard(name: <#T##String#>, bundle: nil).instantiateViewController(withIdentifier: <#T##String#>)
as in
let mainVC:SearchVC = UIStoryboard(name: "Main", bundle: nil).instantiateViewController(withIdentifier: "TheIDIHaveSet") as! SearchVC
But again this will not give you the view controller that is inside your tab bar but create a new instance. And it will not instert it as one of the tabs but present a new full screen view controller.
I got the problem is I cannot make go back previous ViewController of different storyboard from NavigationController in TabViewController.
I've already tried with
_ = navigationController?.popViewController(animated: true)
unfortunately, it does not work. And I know that it can be going back with segue but it's not good practice. Please let me know how to do it. Thanks. Following is my hierarchy.
I had the same issue. In this case I am on a different Storyboard and want to return to the Main Storyboard and present the first view controller. Since this controller is embedded in a Navigation Controller that is embedded in a Tab Bar controller, you must instantiate the Tab Bar Controller. Be sure to set the indentifier on the Tab Bar Controller as "TabBarController"... or whatever you like.
let storyboard = UIStoryboard(name: "Main", bundle: nil)
let controller = storyboard.instantiateViewController(withIdentifier: "TabBarController") as! UITabBarController
self.present(controller, animated: true, completion: nil)