CODEWITHSUNDEEP
iosuiviewcontroller
user5724570
user5724570

Reputation:

is there a way to present a view controller already loaded?

i have an app with 5 views, mostly consisting of drill downs.

lets say i drill down to the 4th view controller. is there a way to present the second view controller exactly as it is without recreating it and modally present that view?

the drill downs do a sort of round about and i dont want to force the user to reselect their selection on the first view to bring them into the second view

so its like this (tvc = tableviewcontroller)

tvc1 > tvc2 > tvc3 > tvc4 > tvc2 > tvc5
         ^                   ^
         these two views are the same view in memory

Upvotes: 0

Views: 870

Answers (3)

AntonTheDev
AntonTheDev

Reputation: 919

You can possibly iterate over the visible viewControllers, and use the is casting operator to check if it is that type of class. Then find the view controller and pop to it.

Objective-C

for (id viewController in self.navigationController.viewControllers) {
    if ([viewController isKindOfClass:[ViewControllerClass class]]) {
        [self.navigationController popToViewController:viewController animated:TRUE];
    }
}

Swift 2.0

for viewController in self.navigationController!.viewControllers {
    if viewController is ViewControllerClass {             
        self.navigationController?.popToViewController(viewController, animated: true)
    }
}

Upvotes: 1

rob mayoff
rob mayoff

Reputation: 385500

You cannot present tvc2 again while it is already in the "stack" of presented view controllers.

If you push your view controllers onto a navigation controller's stack, then you can change the order of the view controllers in that stack by assigning to its viewControllers property or by sending it setViewControllers:animated:. You can hide its navigation bar if you don't want users to see it. I don't think it's safe to put the same view controller into the stack in two places at the same time.

Upvotes: 2

Anil
Anil

Reputation: 2438

UINavigationController has an array called viewControllers. This will give you the list of UIViewControllers that exist in that navigation stack.

You can try something like:

UIViewController *yourTableViewController = [self.navigationController.viewControllers objectAtIndex:(theIndexOfYourTableViewController)];

Hope this helps.

Upvotes: 0

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