Question

I’m still working my way around the iOS SDK and I have another probably easy one for you.
I’m getting the following error when attempting to present a popover:

CoreAnimation: ignoring exception: -[UIPopoverController initWithContentViewController: must not be called with nil.

I thought I had put in code to deal with this, although apparently not. Anyway, code is below. Any thoughts on this would be great. Cheers!

if(popoverController == nil)
{
    NSLog(@"is nil");
    popoverController = [[UIPopoverController alloc] initWithContentViewController:popoverDownload];
}
popoverController.delegate = self;
[popoverController presentPopoverFromRect:CGRectMake(0,0,400,200) inView:self.view permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];

UPDATE

I guess I’m not initialising popoverDownload correctly/at all.
In my .h file

PopoverDownloadViewController *popoverDownload;
@property (nonatomic,retain) PopoverDownloadViewController *popoverDownload;

UPDATE WITH ANSWER

And it was as easy as…

PopoverDownloadViewController *popoverDownload = [[PopoverDownloadViewController alloc] init];

Answer 1

Just to mark this answer closed. I needed to initialise the popover using the following code…

PopoverDownloadViewController *popoverDownload = [[PopoverDownloadViewController alloc] init];

Thanks to omz for the hints in the right direction.