Storyboard: Dismissing Popover using delegate/protocol method

Question

I've read tons of stuff on this and while most seems to be in regards to the non-storyboard approach, I thought I had pieced bits together and figured it out. However, the following code does not result in my popover being dismissed. The dismissPopoverButtonPressed button in the Popover executes but a breakpoint in the dismissPopover method in the delegate never hits. Would very much appreciate someone casting an eye over the code to spot mistakes.

Thanks

In the following, NewGameViewController contains a UIButton. Pressing this results in the Popover Segue and subsequent display of the popover containing the PopViewController UIView.

NewGameViewController.h

#import "PopViewController.h"
@interface NewGameViewController: UIViewController <DismissPopoverDelegate>
{
    UIPopoverController *popover;
}

NewGameViewController.m

@implementation NewGameViewController
-(void)prepareForSegue:(UIStoryboardPopoverSegue *)segue sender:(id)sender
{
    if ([[segue identifier] isEqualToString:@"popoverSegue"])
    {
        popover = [(UIStoryboardPopoverSegue *)segue popoverController];
        // getting warning: Assigning to 'id<UIPopoverControllerDelegate>' from incompatible type 'NewGameViewController *const__strong'
        //popover.delegate = self;
    }
}

-(void)dismissPopover
{
    [popover dismissPopoverAnimated:YES];
}

PopViewController.h

@protocol DismissPopoverDelegate <NSObject>
-(void) dismissPopover;
@end

@interface PopViewController: UIViewController
{
    __unsafe_unretained id<DismissPopoverDelegate> delegate;
}

@property (nonatomic, assign) id<DismissPopoverDelegate> delegate;
-(IBAction)dismissPopoverButtonPressed:(id)sender;
@end

PopViewController.m

#import "NewGameViewController.h"
@implementation PopViewController
@synthesize delegate;
-(IBAction)dismissPopoverButtonPressed:(id)sender
{
    [self.delegate dismissPopover];
}

Answer 1

When linking to a popover controller from a storyboard segue, the popoverController property of the segue refers to a standard UIPopoverController. This controller itself has a property, contentViewController, which will represent the view controller that is actually being presented within the popover, in your case the PopViewController.

So, your current code is setting itself as the delegate of the popover controller, when it really needs to be setting itself as the delegate of the popover's content view controller.

You still need to keep a reference to the popover controller around, to dismiss, so keep your existing code, but make the following change:

-(void)prepareForSegue:(UIStoryboardPopoverSegue *)segue sender:(id)sender
{
    if ([[segue identifier] isEqualToString:@"popoverSegue"])
    {
        popover = [(UIStoryboardPopoverSegue *)segue popoverController];
        // Get a reference to the content view controller of the popover
        PopViewController *popVC = (PopViewController*)popover.contentViewController;
        // Set ourselves as the content VC's delegate
        popVC.delegate = self;
    }
}