Question

I have the following view controller in my UIPopover:

@protocol StorePopoverDelegate
- (void)storeSelected:(NSString *)store;
@end

@interface StorePopoverViewController : UITableViewController
{
    NSMutableArray* items;
}

@property (nonatomic, assign) id<StorePopoverDelegate> delegate;


@end

When an item is selected I want my delegate to get called:

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
    if (delegate != nil) {
        [delegate storeSelected:[items objectAtIndex:indexPath.row]];
    }
}

The delegate class that handles storeSelected is implemented:

-(IBAction)storesButtonClicked:(id)sender
{
    storesPopoverViewController = [[StorePopoverViewController alloc] initWithStyle:UITableViewStylePlain];
    storePopover.delegate = (id)self;
    storePopover = [[UIPopoverController alloc] initWithContentViewController:storesPopoverViewController]; 
    [storePopover presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
}

#pragma Store Popover Delegate Methods
- (void)storeSelected:(NSString *)store;
{
    NSLog(@"%@ was clicked", store);
    [storePopover dismissPopoverAnimated:YES];
}

In my - (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath the delegate is nil. I’m not sure why? I am assigning it.

Answer 1

In your storesButtonClicked: method you are setting the delegate of the storePopover (which is not even initialized at that point). You should be setting the delegate property of storePopoverViewController instead.

storePopoverViewController.delegate = (id)self;