Instead of push segue how to replace view controller (or remove from navigation stack)?

Question

I have a small iPhone app, which uses a navigation controller to display 3 views (here fullscreen):

Answer 1

For this problem, I think the answer is just simple as

1. Get the array of view controllers from NavigationController
2. Removing the last ViewController (current view controller)
3. Insert a new one at last

4. Then set the array of ViewControllers back to the navigationController as bellow:

    if let navController = self.navigationController {
       let newVC = DestinationViewController(nibName: "DestinationViewController", bundle: nil)
   
       var stack = navController.viewControllers
       stack.remove(at: stack.count - 1)       // remove current VC
       stack.insert(newVC, at: stack.count) // add the new one
       navController.setViewControllers(stack, animated: true) // boom!
    }
   

works perfectly with Swift 3.

Hope it helps for some new guys.

Cheers.

Answer 2

As mentioned in previous answers to pop not animated and then to push animated won't look very good because user will see the actual process. I recommend you first push animated and then remove the previous vc. Like so:

extension UINavigationController {
    func replaceCurrentViewController(with viewController: UIViewController, animated: Bool) {
        pushViewController(viewController, animated: animated)
        let indexToRemove = viewControllers.count - 2
        if indexToRemove >= 0 {
            viewControllers.remove(at: indexToRemove)
        }
    }
}

Answer 3

How about this :) I now it's old question, but this will work as a charm:

UIViewController *destinationController = [[UIViewController alloc] init];
UINavigationController *newNavigation = [[UINavigationController alloc] init];
[newNavigation setViewControllers:@[destinationController]];
[[[UIApplication sharedApplication] delegate] window].rootViewController = newNavigation;

Answer 4

This worked for me in Swift 3:

class ReplaceSegue: UIStoryboardSegue {
    override func perform() {
        if let navVC = source.navigationController {
            navVC.pushViewController(destination, animated: true)
        } else {
            super.perform()
        }
    }
}

Answer 5

Use below code last view controller You can use other button or put it your own instead of cancel button i have used

- (void)viewDidLoad
{
 [super viewDidLoad];

 [self.navigationController setNavigationBarHidden:YES];

 UIBarButtonItem *cancelButton = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemCancel target:self action:@selector(dismiss:)];

self.navigationItemSetting.leftBarButtonItem = cancelButton;

}

- (IBAction)dismissSettings:(id)sender
{

// your logout code for social media selected
[self.navigationController popToRootViewControllerAnimated:YES];

}

Answer 6

You could use a custom segue: to do it you need to create a class subclassing UIStoryboardSegue (example MyCustomSegue), and then you can override the "perform" with something like this

-(void)perform {
    UIViewController *sourceViewController = (UIViewController*)[self sourceViewController];
    UIViewController *destinationController = (UIViewController*)[self destinationViewController];
    UINavigationController *navigationController = sourceViewController.navigationController;
    // Pop to root view controller (not animated) before pushing
    [navigationController popToRootViewControllerAnimated:NO];
    [navigationController pushViewController:destinationController animated:YES];    
}

At this point go to Interface Builder, select "custom" segue, and put the name of your class (example MyCustomSegue)