MFMailComposeViewController issues

ShareController.m

// ShareController.m (Conforms to MFMailComposeViewControllerDelegate)

- (void)createMailSheet {
  MFMailComposeViewController *mailSheet = [MFMailComposeViewController new];
  mailSheet.delegate = self;  // Yells at me about conforming to UINavigationControllerDelegate, _not_ MFMailComposeViewControllerDelegate
  [self.delegate presentShareSheet:mailSheet];
}

- (void)mailComposeController:(MFMailComposeViewController*)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError*)error {
  NSLog(@"Hello");
  [controller dismissViewControllerAnimated:YES completion:^{}];
}

// In the delegate

- (void) presentShareSheet:(UIViewController *)shareSheet {
  [self presentModalViewController:shareSheet animated:YES];
}