Exploring UIAlertController in swift

SimpleActionSheet.swift

    /**
     Simple Action Sheet
     - Show action sheet with title and alert message and actions
     */
    func showSimpleActionSheet(controller: UIViewController) {
        let alert = UIAlertController(title: "Title", message: "Please Select an Option", preferredStyle: .actionSheet)
        alert.addAction(UIAlertAction(title: "Approve", style: .default, handler: { (_) in
            print("User click Approve button")
        }))

        alert.addAction(UIAlertAction(title: "Edit", style: .default, handler: { (_) in
            print("User click Edit button")
        }))

        alert.addAction(UIAlertAction(title: "Delete", style: .destructive, handler: { (_) in
            print("User click Delete button")
        }))

        alert.addAction(UIAlertAction(title: "Dismiss", style: .cancel, handler: { (_) in
            print("User click Dismiss button")
        }))

        self.present(alert, animated: true, completion: {
            print("completion block")
        })
    }