Now you can use UIAlertController as an actionsheet in iOS 8 and above versions. Here is an example of it:-

    UIAlertController * view=   [UIAlertController
                                 alertControllerWithTitle:@"Sample"
                                 message:@"Welcome"
                                 preferredStyle:UIAlertControllerStyleActionSheet];

   UIAlertAction* okBtn = [UIAlertAction
                        actionWithTitle:@"OK"
                        style:UIAlertActionStyleDefault
                        handler:^(UIAlertAction * action)
                        {
                            //Do some thing here
                            [view dismissViewControllerAnimated:YES completion:nil];

                        }];
   UIAlertAction* cancelBtn = [UIAlertAction
                            actionWithTitle:@"Cancel"
                            style:UIAlertActionStyleDefault
                            handler:^(UIAlertAction * action)
                            {
                                [view dismissViewControllerAnimated:YES completion:nil];

                            }];


   [view addAction:okBtn];
   [view addAction:cancelBtn];
   [self presentViewController:view animated:YES completion:nil];

Happy Coding!!!