UIPopoverController does not appear

I think I've spent 3 days trying various people's online solutions to make a popover appear and work and literally not a single example has worked.

But here is my current code. Can someone tell me why my popover is not appearing? Thanks.

popper = [[Popper alloc] initWithNibName: @"Popper" bundle: nil];
navigationController = [[UINavigationController alloc] initWithRootViewController: popper];
[navigationController presentModalViewController: popper开发者_开发问答 animated:YES];
[navigationController release];
[popper release];

Notes:

• My Popper class inherits from UIViewController.
• I have set my Xib's class to Popper in IB.
• I have set my main view controller to use UIPopoverControllerDelegate.

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So have you added the navigationController to your view?

why not do:

[self presentModalViewController: popper animated:YES];

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When you already initialise the navigation controller with a view all you need to do is add the navigation controller to your view.

[self.view addSubView: navigationController.view];

Dont present it as modal.

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UIPopoverController is only available on the iPad, and since you've tagged your question with iPhone I'm assuming this may well be the issue.

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For custom popovers, I recommend WEPopover

http://iosdevelopertips.com/open-source/ios-open-source-popover-api-for-iphone-wepopover.html

Just attach the view controller to the wepopovercontroller and you are done.

    WEPopoverController *popOver = [[WEPopoverController alloc] initWithContentViewController:saveViewController];

    [popOver presentPopoverFromBarButtonItem:sender permittedArrowDirections:UIPopoverArrowDirectionUp animated:YES];
    [saveViewControlle release];