UGDAlertViewController* actionVC = [[UGDAlertViewController alloc] initWithTitle:@"Alert title" 
                                                                            text:@"Want to use custom alert view with call to action?" 
                                                                            icon:nil 
                                                                     actionTitle:@"Sure" 
                                                                        negative:@"No, thanks"];

[actionVC setMargin:UIEdgeInsetsMake(self.topLayoutGuide.length, 0, self.bottomLayoutGuide.length, 0)];

[actionVC showInViewController:self withCompletion:^(BOOL accepted) {
    // your code here
    // (accepted == YES) if user pressed the call to action button

    // remove alert view
    [actionVC hideAnimated:YES];
}];