Navigation Bar, not displaying on second ViewController - ios

Question

I have created a navigation controller. I added a plus button to the top right of the navigation controller which opens up a new view controller. However, I want the navigation bar to show up on the new screen as well. But it's not showing. What am I doing wrong, or what am I missing? Here is my code:
ViewController.swift
import UIKit
class ViewController: UIViewController {
#IBOutlet weak var toDoListTextView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
//Setting the Title for the nav bar
title = "To Do List"
configureNavigationItems()
}
private func configureNavigationItems(){
/* Adding a button on the top right of the screen
* in the navigation bar/controller.
*/
navigationItem.rightBarButtonItem = UIBarButtonItem(
barButtonSystemItem: .add,
target: self,
action: #selector(didTapPlus)
)
}
#objc func didTapPlus(){
let vc = storyboard?.instantiateViewController(identifier: "makeTask") as! makeTaskViewController
vc.modalPresentationStyle = .fullScreen
vc.title = "Create a Task"
vc.view.backgroundColor = .black
vc.navigationItem.leftBarButtonItem = UIBarButtonItem(
title: "Back",
style: .done,
target: self,
action: nil)
present(vc, animated: true)
}
}
Storyboard
Click Here To See Picture
Demo of App
enter image description here

Answer 1

Each modally-presented view controller gets a brand-new view hierarchy. This means that if you want your MakeTaskViewController to have a navigation bar, you'll need to manually add a navigation controller.
class ViewController: UIViewController {
// ... your code ...
#objc func didTapPlus() {
let vc = storyboard?.instantiateViewController(identifier: "makeTask") as! MakeTaskViewController
vc.modalPresentationStyle = .fullScreen
vc.title = "Create a Task"
vc.view.backgroundColor = .black
vc.navigationItem.leftBarButtonItem = UIBarButtonItem(
title: "Back",
style: .done,
target: vc, /// make sure to set `target` as the new view controller
action: #selector(vc.dismissMe))
/// wrap the new view controller in a navigation controller (this adds the top bar)
let navigationController = UINavigationController(rootViewController: vc)
/// so you can actually see the `Create a Task` text,
navigationController.navigationBar.barStyle = .black
present(navigationController, animated: true)
}
}
/// side note: `MakeTaskViewController` and other classes should be Capitalized
class MakeTaskViewController: UIViewController {
#objc func dismissMe() {
self.dismiss(animated: true)
}
}
Result:

Answer 2

Try this!
import UIKit
class ViewController: UIViewController {
#IBOutlet weak var toDoListTextView: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
//Setting the Title for the nav bar
title = "To Do List"
configureNavigationItems()
}
private func configureNavigationItems(){
navigationItem.rightBarButtonItem = UIBarButtonItem(
barButtonSystemItem: .add,
target: self,
action: #selector(didTapPlus)
)
}
#objc func didTapPlus(){
let vc = storyboard?.instantiateViewController(identifier: "makeTask") as! makeTaskViewController
vc.modalPresentationStyle = .fullScreen
vc.title = "Create a Task"
vc.view.backgroundColor = .black
vc.navigationItem.leftBarButtonItem = UIBarButtonItem(
title: "Back",
style: .done,
target: self,
action: nil)
navigationController?.pushViewController(vc, animated: true)
//present(vc, animated: true)
}
}
😊