Modal segue, navigation bar disappears

Question

I'm using Xcode 4.6.1 to code on Objective-C. I want to know how can I keep the navigation bar shown when I create a modal segue between 2 View controllers, because I'm doing the segue in the storyboard and when I run the application the navigation bar of the second view controller disappears, and I have a done button on that bar but I can't see it.

Answer 1

swift version:

Follow steps:

1. Embed VC in NavigationController

2. Override prepareForSegue()

   override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject?) {
     if segue.identifier == "goToYourController" {
       let navigation: UINavigationController = segue.destinationViewController as! UINavigationController
   
       var vc = YourViewController.init()
       vc = navigation.viewControllers[0] as! YourViewController
       //if you need send something to destnation View Controller 
       //vc.delegate = self
     }
   }
   

Answer 2

In order to show a navigation bar on a modal view controller, one way is to insert a navigation controller. You set the segue to this navigation controller as "Present Modally" and can set the presentation to "Full Screen" if needed.

Here's how it might look in Interface Builder, note that the "Title" and "Item" button will show now that we have inserted a navigation controller as the target of our segue.

Answer 3

in storyboard , you should add a Navigation Item to your new viewController, then add Bar Button Item for your done button

Answer 4

In iOS 8 there is a better method. You can use adaptive presentation styles:

1. Use a "Present as popover" segue
2. Set your controller to adopt the UIPopoverPresentationControllerDelegate protocol
3. Implement 2 methods

Objective-C:

- (UIModalPresentationStyle)adaptivePresentationStyleForPresentationController:(UIPresentationController *)controller {
    return UIModalPresentationFullScreen;
}

- (UIViewController *)presentationController:(UIPresentationController *)controller viewControllerForAdaptivePresentationStyle:(UIModalPresentationStyle)style {
    UINavigationController *navController = [[UINavigationController alloc] initWithRootViewController: controller.presentedViewController];
    return navController;
}

Swift:

UIPopoverPresentationControllerDelegate
    func adaptivePresentationStyleForPresentationController(controller: UIPresentationController) -> UIModalPresentationStyle {
        return UIModalPresentationStyle.FullScreen
    }

func presentationController(controller: UIPresentationController, viewControllerForAdaptivePresentationStyle style: UIModalPresentationStyle) -> UIViewController? {
    var navController = UINavigationController(rootViewController: controller.presentedViewController)
    return navController
}

Swift 4:

extension MyViewController: UIPopoverPresentationControllerDelegate {
    func adaptivePresentationStyleForPresentationController(controller: UIPresentationController) -> UIModalPresentationStyle {
        return UIModalPresentationStyle.fullScreen
    }

    func presentationController(_ controller: UIPresentationController, viewControllerForAdaptivePresentationStyle style: UIModalPresentationStyle) -> UIViewController? {
        return UINavigationController(rootViewController: controller.presentedViewController)
    }
}

In prepare for segue method set the delegate:

   override func prepareForSegue(segue: UIStoryboardSegue, sender: AnyObject!) {
        if let adpostVC = segue.destinationViewController as? XXXController {
            let popPC = adpostVC.popoverPresentationController
            popPC?.delegate = self

Answer 5

There is an easier way to do this. Like previous comments said (but didn't explain all the steps) you need to embed your desired destination view controller in a navigation controller, then set your destination view controller to be the Navigation Controller, then the Navigation controller calls the destination view controller.

First, embed the VC in a NavVC. Then you must write the code to set the segue destination to be the Nav VC.

The code looks like this:

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    UINavigationController *nav = segue.destinationViewController;
    AddTriviaVC *triv = [[AddTriviaVC alloc]init];
    triv = nav.viewControllers[0]; 
    triv.location = self.location; 
} 

I hope this makes sense.

Answer 6

You could simply do the following to show the navigation bar:

Objective-C

UINavigationController alloc]initWithRootViewController:modalVC];

SWIFT 3

let modelVC = self.storyboard?.instantiateViewController(withIdentifier: "modalVC") as! ModalVC
let navBarOnModal: UINavigationController = UINavigationController(rootViewController: modalVC)
self.present(navBarOnModal, animated: true, completion: nil)

This will show the modal view controller with the navigation bar. Knowledge on Objective-C is limited, so I did not write the part of presenting. You should be able to figure that one out. ;)

Hope this helps!