PresentModalViewController not showing navigation bar on next view - iphone

Question

Hello I am using One tab bar button on toolbar , this button will show next view with table view ,Here is my code
[self presentModalViewController:self.navigationController
animated:YES];
my problem is that when I click this tab bar button it will showing next view with tableview but not navigation bar. because of this i am unable to perform delete operation in tableView.
How to solve the issue?

Answer 1

If you dont find the UINavigationBar on the next class means , it does not have a navigation controller, so before pushing it add a UINavigationController to your next view.
Try like this:
NextViewController *nextViewController=[[NextViewController alloc]initWithNibName:#"NextViewController" bundle:nil];
UINavigationController *navBar=[[UINavigationController alloc]initWithRootViewController:nextViewController];
[self.navigationController presentModalViewController:navBar animated:YES];
[navBar release];
[nextViewController release];
see this stackoverflow question for edit option.
You can simply add a button to navigation bar with ease
self.navigationItem.rightBarButtonItem = [[[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:#selector(editTable)] autorelease];
-(void)editTable{
[tableView setEditing: YES animated: YES];
}
All the best.

Answer 2

This code is called on button click event in classA VC:
ClassBVC* bVc = [[ClassBVC alloc] initWithNibName:#"ClassBVC" bundle:nil];
UINavigationController* tempNavCon = [[UINavigationController alloc] initWithRootViewController:bVc];
[self presentModalViewController:tempNavCon animated:YES];
[tempNavCon release];
[bVc release];
bVc = nil
;
and in class BVC in view did load you make an UIbarbutton item e.g:
UIBarButtonItem* barButton = [[UIBarButtonItem alloc] initWithTitle:#"Back" style:UIBarButtonItemStylePlain target:self action:#selector(backButtonClicked:)];
[barButton setTitle:#"Back"];
[self.navigationItem setLeftBarButtonItem:barButton];
[barButton release];
And in buttonClickedMethod simply dismiss the the model controller as:
-(void)backButtonClicked:(id)sender
{
[self dismissModalViewControllerAnimated:YES];
}

Answer 3

That is because you are using Modal to bring the new view controller.
Modally added/presented view controller will not be added to the navigation controller stack

Answer 4

if you are using navigationcontroller use like this
[self.navigationController pushViewController:nextController animated:YES];

Answer 5

Add navigation bar as sub view to the new view with bar button.
Try this
-(IBAction) editClick:(id)sender
{
[tableView setEditing:![tableView isEditing] animated:YES];
}

Answer 6

Swift 5
import UIKit
class ListVC: UIViewController {
// MARK: - Init
override func viewDidLoad() {
super.viewDidLoad()
//Background of the first screen
view.backgroundColor = .yellow
//Calling the instance of the navigation controller
let nav = self.navigationController?.navigationBar
//Defining the black theme on the navigation controller
nav?.barStyle = UIBarStyle.black
//Defining the white characters to make contrast with the black theme on the navigation controller
nav?.tintColor = UIColor.white
//Defining the custom color of the title font from navigation controller
nav?.titleTextAttributes = [NSAttributedString.Key.foregroundColor: UIColor.orange]
//Defining the title of the navigation controller
nav?.topItem?.title = "List"
navigationItem.rightBarButtonItem = UIBarButtonItem.init(image: #imageLiteral(resourceName: "AddBtn"), style: .plain, target: self, action: #selector(hello))
// print(Realm.Configuration.defaultConfiguration.fileURL)
let realm = try! Realm()
print(Realm.Configuration.defaultConfiguration.fileURL)
}
// MARK: - Selector
/// A selector function that is called when the 'add' button is pressed on the navigation controller
#objc func hello() {
//Instance of the second screen
let addVC = AddVC()
//Add the navigationController to the new viewController
let navController = UINavigationController(rootViewController: addVC)
//Presenting the second screen modally
navigationController?.present(navController, animated: true, completion: nil)
}
}
//Other class
import UIKit
class AddVC: UIViewController {
override func viewDidLoad() {
super.viewDidLoad()
//Background of the view
view.backgroundColor = .white
//Calling the instance of the navigation controller
let nav = self.navigationController?.navigationBar
//Initialize the title for the ViewController
nav?.topItem?.title = "Andrey"
// Initialize the right bar button item
navigationItem.rightBarButtonItem = setUpSaveButton()
}
override func viewWillAppear(_ animated: Bool) {
super.viewWillAppear(animated)
self.navigationController?.setNavigationBarHidden(false, animated: true)
}
/// Function that returns the "Save" bar button item
private func setUpSaveButton() -> UIBarButtonItem {
let button = UIBarButtonItem(title: "Save", style: .plain, target: self, action: #selector(saveAction))
button.setTitleTextAttributes([NSAttributedString.Key.foregroundColor: UIColor.systemBlue],
for: .normal)
return button
}
#objc func saveAction() {
print("Saving..")
}
}

Answer 7

Swift 5.1
Presenting ViewController with navigation bar AND toolbar in fullscreen mode. If you don't put the row marked on comment the toolbar never show itself.
let sb = UIStoryboard(name: "retail_mainScreen", bundle: nil)
guard let mainVC = sb.instantiateViewController(withIdentifier: "mainScreen") as? retail_mainGest else { return }
let navController = UINavigationController(rootViewController: mainVC)
navController.isToolbarHidden = false //<--- remember this or toolbar will not appear
navController.modalPresentationStyle = .fullScreen
sender.vista.present(navController, animated: true, completion: nil)