I'm trying to make a share dialogue for both iPhone and iPad. The iPhone code works, but when I run the iPad version and call this function I get the warning " on whose view is not in the window hierarchy!" How can I display the UIPopover similar to the way I displayed the iPhone? Thanks!

-(void) shareOnlyTextMethod: (const char *) shareMessage: (const char *) shareLink
{
    NSString *shareText = [NSString stringWithUTF8String:shareMessage];
    NSURL *shareURL = [NSURL URLWithString:[NSString stringWithUTF8String:shareLink]];
    NSArray *itemsToShare = @[shareText, shareURL];
    UIActivityViewController *activityVC = [[UIActivityViewController alloc] initWithActivityItems:itemsToShare applicationActivities:nil];
    if ( UI_USER_INTERFACE_IDIOM() == UIUserInterfaceIdiomPad ) {
        UIPopoverController *popup = [[UIPopoverController alloc] initWithContentViewController:activityVC];
        [popup presentPopoverFromRect:CGRectMake(self.view.frame.size.width/2, self.view.frame.size.height/4, 0, 0)inView:self.view permittedArrowDirections:UIPopoverArrowDirectionAny animated:YES];
    }
    else {
        [self presentViewController:activityVC animated:YES completion:nil];
        [[UIApplication sharedApplication].keyWindow.rootViewController presentViewController:activityVC animated:YES completion:nil];
    }
}