- (IBAction)editNote {
  MTTextViewController *textViewController = [[MTTextViewController alloc] initWithText:self.noteText];
  textViewController.title = @"Edit Note";
  textViewController.delegate = self;
  // You can also push it on a navigation controller if you'd like
  [self presentViewController:[[UINavigationController alloc] initWithRootViewController:textViewController] animated:YES completion:nil];
}

- (void)textViewControllerDidFinish:(MTTextViewController *)controller {
  self.noteText = controller.text;
  [self dismissViewControllerAnimated:YES completion:nil];
}

- (void)textViewControllerDidCancel:(MTTextViewController *)controller {
  [self dismissViewControllerAnimated:YES completion:nil];
}