iOS Storyboards: How to segue to the second view with a back button to the first view, but without displaying the first view

Question

Here is my storyboard configuration:

Navigation Controller -> View Controller A -> Push-> View Controller B
^
|
Modal
^
|
View Controller C

What I want to achieve: When a button is pressed in View C, directly View B will be opened modally (No part of View A is to be displayed). Also, View B will have a navigation back button to View A.

To achieve this,

• I set up the illustrated storyboard.
• I created a segue between View C and the Navigation Controller of View A/B.
• In the 'prepareForSegue' method of View Controller C, I get an instance of View Controller A as the first element in the navigation. In this instance, I set a variable like 'directlyProceedToViewB=YES'.
• In the viewDidLoad method of View Controller A, I check the variable 'directlyProceedToViewB' and if it is YES, I call 'performSegueWithIdentifier' to segue to View B

The result is so that, first View A is opened modally and after displaying it a very short time, View B is opened with a push animation (View B can navigate back to View A, which is good). But I do not want View A to be displayed any time at all. How can I achieve this?

EDIT:

To better visualize, I'm adding a screenshot with more example cases to support:

Here are some cases I want to support:

• We can start with ViewC, click on 'Modally Display B' which opens ViewB, then click 'Back to A' to navigate back to ViewA, then click on 'Dismiss Modal' on ViewA to go back to ViewC
• We can start with ViewD, clcik on 'Modally Display A' which opens ViewA, then click on 'PushB' to open ViewB, then go back and forth between A and B and modally dismiss to ViewD.

Answer 1

First of all, some corrections: those are not views but view controllers. And "view A" is not pushed into the UINavigationController but it's the root.

After that, I suggest making the segue in "view C" an unwind segue and implement the IBAction in "view A" by pushing "view B" with [[self navigationController] pushViewController:bViewController animated:NO].

EDIT (adding some details):

I assume that in ViewControllerA's viewWillAppear you present ViewControllerC in a not animated manner.
Implement an unwinding action like (IBAction)unwindAndThenGoToB:(UIStoryboardSegue *)segue in ViewControllerA.
In the storyboard connect the button in ViewControllerC to the Exit icon and select the previously defined method.
Then implement the method with the push call I wrote earlier.
ps: for documentation there is plenty on Apple's website.

Answer 2

Implement this using delegates.Decalre protocol in which class you want and define those methods and call the methods in the view controller you want.There is no many ways of calling some view and showing back button to go different view.modal view is just a concept.and you can use delegate methods to call whatever class you want.

Answer 3

Here I got a way to do so:-

You need to set no animation for segue from viewC to viewA as shown in below image. Then set a segue identifier for segue from viewA to viewB namely, "viewB" and in your viewA .m file add following code,

- (void)viewDidLoad {
  [super viewDidLoad];
  // Place your conditional check here.
  [self performSegueWithIdentifier:@"viewB" sender:self];  //Will directly lead to viewB and viewA won't be shown as no animation is there from viewC to viewA.
}

And your rest flow be like-wise.

Answer 4

I found the solution myself.

First, I discovered that, my original proposal of

In the viewDidLoad method of View Controller A, I check the variable 'directlyProceedToViewB' and if it is YES, I call 'performSegueWithIdentifier' to segue to View B

works as I desired on iOS 7 but does not work on iOS 8.

So the solution is, in the viewDidLoad method of View Controller A, if 'directlyProceedToViewB' is YES, rather than calling performSegueWithIdentifier, use the following code:

ViewControllerB *destVC = [self.storyboard instantiateViewControllerWithIdentifier:@"ViewControllerBStoryboardID"];
[self.navigationController pushViewController:destVC animated:NO];