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POCan you return data via dismissModalViewControllerAnimated: or do you need a segue for the return journey?
 

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  1. POCan you return data via dismissModalViewControllerAnimated: or do you need a segue for the return journey?
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    <p>I've got a <code>ViewController</code>, that has a <code>UIButton</code> which performs the following:</p> <pre><code>- (IBAction)buttonClicked:(id)sender { NSLog(@"Button clicked, lets move to next controller to do stuff"); [self performSegueWithIdentifier:@"toNextController" sender:nil]; } </code></pre> <p>This just moves onto my next <code>ViewController</code>, nothing amazing so far.</p> <p>In the second ViewController, I will do some of my application logic, then return.</p> <pre><code>- (IBAction)backButtonPressed:(id)sender { NSLog(@"Back button clicked, lets just drop out of here..."); [self dismissModalViewControllerAnimated:YES]; } - (IBAction)saveButtonPressed:(id)sender { NSLog(@"save button clicked, lets send some data back"); [self performSegueWithIdentifier:@"backToMain" sender:nil]; } -(void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { if ([segue.identifier isEqualToString:@"backToMain"]) { NSLog(@"Preparing segue for backToMain"); // Obtain handles on the current and destination controllers MainController * startingViewController; SecondController * destinationController; startingViewController = (MainController * ) segue.sourceViewController; destinationController = (SecondController * ) segue.destinationViewController; // set data on the main controller startingViewController.myString = @"SomeDummyString"; } } </code></pre> <p>What I have tried to do so far, is to create a second segue that links back to the main controller, and before performing the segue, grab a handle on it and set data. I'm not sure if that is the best way of navigating back or not.</p> <p><strong>Question:</strong></p> <p>Is it possible, to return data when doing a <code>[self dismissModalViewControllerAnimated:YES];</code>, or do you need to implement a segue for the return journey?</p>
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    1. USJimmy
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    1. COI would not perform another segue back to the first controller. As I understand it this creates a brand new instance of the Controller class and in effect you are just adding on more and more controllers as they segue back and forth to each other. I would use a delegate/protocol method. See this: http://stackoverflow.com/questions/10841653/create-a-modal-view-with-navigation-bar-and-back-button/10841897#10841897
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      1. USJustin Paulson
 

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