Setting a delegate from FPPopover without a segue

Question

I'm working on an iPhone app which uses a FPPopover, an open source library that enables popovers on iPhones. I have my PopoverTVC displaying what I want, but I'm unable to figure out how to set my SavedPOITableViewController as a delegate of PopoverTVC without a segue.

FPPopover

SavedPOITableViewController opens PopoverTVC from a UIBarButtonItem

Should I even be using a delegate, or should I set up a NSNotification on my SavedPOITVC's viewDidLoad to listen for changes and post a notification on my PopoverTVC when the myVariable has updated?

Here's how my popover is instantiated on my SavedPOITableViewController:

- (IBAction)filterButtonPressed:(UIBarButtonItem *)sender {
    // The view controller you want to present as a popover
    UIBarButtonItem *buttonItem = sender;
    UIView *buttonView = [buttonItem valueForKey:@"view"];
    PopoverTableViewController *categoryList = [[PopoverTableViewController alloc]init];
    FPPopoverController *popover = [[FPPopoverController alloc]initWithViewController:categoryList];
categoryList.delegate = self; // this doesn't work

    [popover setArrowDirection:FPPopoverArrowDirectionUp];
    [popover presentPopoverFromView:buttonView];    
}

I know this sounds startlingly stupid, but it's stumped me for more time than I care to admit.

When I try to set the delegate, I get this error:

    Assigning to 'id<PopoverTableViewControllerDelegate>' from 
incompatible type 'SavedPOITableViewController *const __strong'

Answer 1

My PopoverTVC did not have a storyboard. I didn't bother to put one in because it's "out there on it's own". I threw an orphaned TableViewController on interface builder, assigned its class as PopoverTVC and I'm the delegate works, despite a warning.

I don't understand why it works with the addition of an orphaned storyboard, but it didn't before with just code. If anyone can explain that, I'd love to hear the explanation.