Delegate method not being called by viewController - objective-c

Question

So here's what's going on (other than me being a noob).
I have two view controllers, AddAPlaceViewController and showCategoriesViewController.
I have a table cell in AddAPlaceVC which you tap and showCategoriesVC (which is a tableviewcontroller) opens up (modal) and gives you a list of ten options. You tap one of them or tap on the cancel button.
I've spent days understanding and figuring out protocols and delegates. I think I have them set up right but can't figure out why they aren't working or getting called. I've tried all sorts of changes but no luck so far.
You guys are my only hope! :)
Here's the important bits of the code:
AddAPlaceViewController.h
AddAPlaceViewController.h
#import <UIKit/UIKit.h>
#import "showCategoriesViewController.h"
#interface AddAPlaceViewController : UIViewController <UITextViewDelegate, UITextFieldDelegate, UINavigationControllerDelegate, UIImagePickerControllerDelegate, UIActionSheetDelegate, UITableViewDataSource, UITableViewDelegate, ShowCategoriesViewControllerDelegate>
AddAPlaceViewController.m
AddAPlaceViewController.m
#import "AddAPlaceViewController.h"
#import "FSQVenue.h"
#import "Categories.h"
//#import "showCategoriesViewController.h"
#import <QuartzCore/QuartzCore.h>
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath {
// Un-highlight the selected cell
[categoryTable deselectRowAtIndexPath:indexPath animated:YES];
showCategoriesViewController *SCVC = [[showCategoriesViewController alloc] init];
SCVC = [self.storyboard instantiateViewControllerWithIdentifier:#"showCategories"];
SCVC.categoryDelegate = self;
[self.navigationController presentModalViewController:SCVC animated:YES];
}
#pragma mark showCategoriesViewControllerDelegate
-(void)didSelectOptions:(NSInteger )selectedCategory
{
NSInteger category = selectedCategory;
NSLog(#"Add Places %d", category);
[self dismissModalViewControllerAnimated:YES];
}
-(void)didCancelOptions
{
NSLog(#"Add Places -- Dismiss Button Pressed");
[self dismissModalViewControllerAnimated:YES];
}
showCategoriesViewController.h
showCategoriesViewController.h
#import <UIKit/UIKit.h>
#protocol ShowCategoriesViewControllerDelegate;
#interface showCategoriesViewController : UITableViewController
{
id<ShowCategoriesViewControllerDelegate>categoryDelegate;
}
#property (nonatomic, weak) id<ShowCategoriesViewControllerDelegate> categoryDelegate;
- (IBAction)cancelButton:(id)sender;
#end
#protocol ShowCategoriesViewControllerDelegate <NSObject>
- (void)didSelectOptions:(NSInteger )selectedCategory;
- (void)didCancelOptions;
#end
showCategoriesViewController.m
showCategoriesViewController.m
#import "showCategoriesViewController.h"
#import "Categories.h"
#interface showCategoriesViewController ()
#property (strong, nonatomic) NSArray *categoryArray;
#end
#implementation showCategoriesViewController
#synthesize categoryDelegate = _categoryDelegate;
#synthesize categoryArray;
…
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];
[_categoryDelegate didSelectOptions:indexPath.row];
NSLog(#"Selected IndeXPath %#", cell);
NSLog(#"Selected IndeXPath GOING TO DELEGATE %d", indexPath.row);
}
- (IBAction)cancelButton:(id)sender {
[_categoryDelegate didCancelOptions];
NSLog(#"Button Pressed");
}

Answer 1

Most likely guess? In the code you posted, both your property and your ivar are called categoryDelegate, yet you treat your property as though it refers to an ivar called _categoryDelegate. Probably this is just a typo, but because iOS allows calls to methods on null objects (and just doesn't do anything), it fails silently. Renaming the ivar to _categoryDelegate should fix it.

Answer 2

Since you have presentModalViewController: your SCVC, your AddAPlaceViewController is inactive. Its better if you can create your showCategoriesViewController as a subclass of UITableView with your custom delegate method.
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