ViewController with Touch ID

TouchIDViewController.swift

//
//  ViewController.swift
//  TouchIDViewController
//
//  Created by Diego on 1/28/15.
//  Copyright (c) 2015 Diego. All rights reserved.
//

import UIKit
import LocalAuthentication

class ViewController: UIViewController {

	override func viewDidLoad() {
		super.viewDidLoad()
	}

	@IBAction func authTapped() {
		var context = LAContext()
		var error:NSErrorPointer = nil
		
		if(context.canEvaluatePolicy(LAPolicy.DeviceOwnerAuthenticationWithBiometrics, error: error))
		{
			//Touch ID Available
			context.evaluatePolicy(LAPolicy.DeviceOwnerAuthenticationWithBiometrics, localizedReason: "Are you the one?", reply: {
				(success:Bool, error:NSError!) in
				if(success)
				{
					self.showNotice("Hooray!!!", message:"You are the one.")
				}
				else
				{
					if(error.code == Int(kLAErrorUserFallback))
					{
						self.showNotice("Notice", message:"Fallback.")
					}
					else if(error.code == Int(kLAErrorUserCancel))
					{
						self.showNotice("Notice", message:"You canceled.")
					}
					else
					{
						self.showNotice("Error", message:"There was an error with the authentication.")
					}
				}
			})
		}
		else
		{
			self.showNotice("Error", message:"Your device don't have Touch ID.")
		}
	}
	
	func showNotice(title:String, message:String)
	{
		let alertController = UIAlertController(title: title, message: message, preferredStyle: .Alert)
		
		let OKAction = UIAlertAction(title: "OK", style: .Default) { (action) in
			
		}
		alertController.addAction(OKAction)
		
		self.presentViewController(alertController, animated: true) {
		}
	}
	
}