Question

My FlipsideViewController’s “done” button is not working (no crash, but not dismissing the view either). Here’s the code:

In FlipSideViewController.h

@class FlipsideViewController;

@protocol FlipsideViewControllerDelegate
- (void)flipsideViewControllerDidFinish:(FlipsideViewController *)controller;
@end

@interface FlipsideViewController : UIViewController

@property (weak, nonatomic) id <FlipsideViewControllerDelegate> delegate;

- (IBAction)done:(id)sender;

@end

In FlipSideViewController.m

- (IBAction)done:(id)sender
{
// an NSLog statement that is here is logging properly
[self.delegate flipsideViewControllerDidFinish:self];

}

In MainViewController.h

@interface FifthViewController : UIViewController <FlipsideViewControllerDelegate> 
...

In MainViewController.m

- (void)flipsideViewControllerDidFinish:(FlipsideViewController *)controller
{
[self dismissViewControllerAnimated:YES completion:nil];
}

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
if ([[segue identifier] isEqualToString:@"showAlternate"]) {
    [[segue destinationViewController] setDelegate:self];
}
}

By the way, this is a tabbed application, so I’m think that might have something to do with it. Any suggestions would be appreciated. Thank you.

Answer 1

I’ve found the problem. If you look in the question code, under MainViewController.m, it is imperative that you set the segue identifier in your storyboard file, as well as in code:

if ([[segue identifier] isEqualToString:@"showAlternate"]) {
[[segue destinationViewController] setDelegate:self];
}

Thank you, sergio, for your help.