Universal Xcode Camera Roll App Issue - iphone

Question

I have a universal app in Xcode. If the user is using an iPad the use image from library button works great. However if they use an iPhone the button doesn't work.
Here is the error I receive.
Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UIPopoverController initWithContentViewController:] called when not running under UIUserInterfaceIdiomPad.'
Was told this code would work. Does it go into the (IBAction) Code below?
if (UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad) { Add Popover code here } else {
Add alternative for popover here }
- (IBAction) useCameraRoll: (id)sender
{
if ([self.popoverController isPopoverVisible]) {
[self.popoverController dismissPopoverAnimated:YES];
} else {
if ([UIImagePickerController isSourceTypeAvailable:
UIImagePickerControllerSourceTypeSavedPhotosAlbum])
{
UIImagePickerController *imagePicker =
[[UIImagePickerController alloc] init];
imagePicker.delegate = self;
imagePicker.sourceType =
UIImagePickerControllerSourceTypePhotoLibrary;
imagePicker.mediaTypes = [NSArray arrayWithObjects:
(NSString *) kUTTypeImage,
nil];
imagePicker.allowsEditing = YES;
newMedia = NO;
}
}
}

Answer 1

This crash is occuring because you can't use UIPopOverControllers on iPhones, only on iPads.
[UIPopoverController initWithContentViewController:] called when not
running under UIUserInterfaceIdiom Pad.'
Try something like this:
- (IBAction)useCameraRoll:(id)sender
{
UIPopoverController *popoverController = [[UIPopoverController alloc] init];
if ([UIImagePickerController isSourceTypeAvailable:
UIImagePickerControllerSourceTypeSavedPhotosAlbum])
{
UIImagePickerController *imagePicker =
[[UIImagePickerController alloc] init];
imagePicker.delegate = self;
imagePicker.sourceType =
UIImagePickerControllerSourceTypePhotoLibrary;
imagePicker.mediaTypes = [NSArray arrayWithObjects:
(NSString *) kUTTypeImage,
nil];
imagePicker.allowsEditing = YES;
newMedia = NO;
}
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPad) {
if (popoverController.isPopoverVisible) {
[popoverController dismissPopoverAnimated:YES];
}else{
[popoverController setContentViewController:imagePicker];
[popoverController setDelegate:self];
[popoverController presentPopoverFromRect:CGRectMake(0, 0, 320, 320) inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
}
}else{
[imagePicker presentViewController:imagePicker animated:YES completion:nil];
}
}