Change to a view controller within a different tab swift?

Question

I'm trying to segue to a VC that is not the Root VC.

@IBAction func composeJournalTapped(sender: AnyObject) {
    self.tabBarController?.selectedIndex = 2

    let journalVC = self.storyboard?.instantiateViewControllerWithIdentifier("JournalEntryTableViewController") as! JournalEntryTableViewController

    self.navigationController?.pushViewController(journalVC, animated: true)


}

I know the obvious answer would be to send a push segue to that VC, but that does not switch tabs. I want to switch tabs and also switch to a viewController within that tab which isn't the root. The above code strictly switches tabs. In other words, I want to switch from index 1 to index 2, then push segue from index 2 rootVC to destinationVC.

Duncan C · Accepted Answer · 2015-05-23 00:15:53Z

1

So you need code that does what you want. If the 2nd tab in your tab bar controller is a navigation controller, cast it to the appropriate type and implement an interface that lets you present the appropriate view controller.

I can't tell you the details of how to do that because I don't know your app's structure. Will the VC in question already be on tab 2's navigation stack? Will it always NOT be on the stack, so a push segue is the right thing to do? Is either case possible? You need to map out the cases and design code that deals with all the possoble case.

answered May 23, 2015 at 0:15

Duncan C

132k22 gold badges185 silver badges295 bronze badges

Sign up to request clarification or add additional context in comments.

4 Comments

Mike Over a year ago

The destination view controller is the 2nd VC on the navigation stack of the destination tab. It will always be there. Instantiating the destinationVC will take it out of the navigation stack, which is not what I want.

Duncan C Over a year ago

So make your IBAction first se the tab bar controller's selectedIndex to the desired index, and then get a pointer to that tab's view controller (your navigation controller) cast it to the appropriate type, and use a call to `popToViewController:animated' to pop to that view controller on the stack.

Mike Over a year ago

@IBAction func composeJournalTapped(sender: AnyObject) { self.tabBarController?.selectedIndex = 2 self.navigationController!.popToViewController(navigationController!.viewControllers[2] as! JournalEntryTableViewController, animated: false) } this causes a crash...index out of range

Duncan C Over a year ago

Assuming that the tab at Index 2 contains a navigation controller and that's the one you want to pop, you need to tell THAT navigation controller to pop, not self.navigationController.

Collectives™ on Stack Overflow

Change to a view controller within a different tab swift?

1 Answer 1

4 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

4 Comments

Your Answer

Sign up or log in

Post as a guest

Related