Xcode pass data from a viewcontroller to another viewcontroller in a different storyboard

Question

I have two storyboards that contain one view controller each.

storyboard1 --------> viewcontrollerA

storyboard2 --------> viewcontrollerB

How do I pass a string from viewcontrollerA to viewcontrollerB?

Example:

viewcontrollerB.testString=@"The transfer of data worked!";

So far, I know how to transfer views, but I don't know how to transfer data.

This is my code to transfer views:

- (IBAction)moveToViewcontrollerB:(id)sender {

UIStoryboard *storyboard2 = [UIStoryboard storyboardWithName:@"storyboard2" bundle:nil];

UIViewController *viewcontrollerB = [storyboard2 instantiateInitialViewController];

viewcontrollerB.modalTransitionStyle = UIModalTransitionStyleCoverVertical;

[self presentViewController:lessonOne_ViewController animated:YES completion:nil];

}

My question is, if I have a string in viewcontrollerB called "testString", how do I update that string in the viewcontrollerA IBaction method?

I only know how to transfer data using segues but since this viewcontroller is on another storyboard, a segue - prepareForSegue won't work.

Thank you in advance.

possible duplicate of [Passing Data between View Controllers](http://stackoverflow.com/questions/5210535/passing-data-between-view-controllers) — Huy Nghia, Mar 02 '15 at 05:09
declare a strong type of NSString in ViewControllerB. Then access in ViewControllerA as --> `viewcontrollerB.testString = @"Hello ViewController B";` — M Zubair Shamshad, Mar 02 '15 at 05:21
I've tried all of these solutions but none of them work. This thread uses a lot of depreciated methods and none of them can instantiate a viewcontroller correctly. — hmzfier, Mar 02 '15 at 06:35

Abhishek Sharma · Accepted Answer · 2015-03-02T07:16:16.307

1

First of all set Storyboard ID to your SecondView Controller like below image.

enter image description here

Then add following code at your button click event.

- (IBAction)moveToViewcontrollerB:(id)sender {
    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Storyboard2"
                                                         bundle: nil];
    SecondStoryboardVC * secondStoryboardVCOBJ_ = [storyboard instantiateViewControllerWithIdentifier:@"SecondClassStoryboardID"];
    [secondStoryboardVCOBJ_ setStrValue:@"The transfer of data worked!"];
    secondStoryboardVCOBJ_.modalTransitionStyle = UIModalTransitionStyleCoverVertical;
    [self presentViewController:secondStoryboardVCOBJ_ animated:YES completion:nil];
}

Storyboard2 is storyboard name.

SecondClassStoryboardID is Storyboard ID which you given in storyboard viewController like above image.

SecondStoryboardVC is the secondclass name which you want to present

edited Mar 02 '15 at 07:16

answered Mar 02 '15 at 05:37

Abhishek Sharma

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Thank you for your help. Xcode is giving me an error with this line: SecondStoryboardVC * secondStoryboardVCOBJ_ = [storyboard instantiateViewControllerWithIdentifier:@"SecondClassStoryboardID"]; -----> It's saying that "storyboard" is a unknown receiver? – hmzfier Mar 02 '15 at 06:34
`SecondStoryboardVC` is the second class name which you want to present. Please see the updated answer. In your example its `viewcontrollerB` – Abhishek Sharma Mar 02 '15 at 07:16
@AbhishekSharma What is "setStrValue"? – Supertecnoboff Aug 26 '15 at 11:38

Xcode pass data from a viewcontroller to another viewcontroller in a different storyboard

1 Answers1