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UIAlertView - iOS 7 and iOS 8

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  1. import UIKit
  2.  
  3. class ViewController: UIViewController, UIAlertViewDelegate {
  4.  
  5.     let iosVersion = NSString(string: UIDevice.currentDevice().systemVersion).doubleValue
  6.  
  7.     // MARK: - IBActions
  8.  
  9.     @IBAction func showAlertTapped(sender: AnyObject) {
  10.         showAlert()
  11.     }
  12.  
  13.     // MARK: - Internal
  14.  
  15.     func showAlert() {
  16.  
  17.         if iosVersion >= 8 {
  18.             var alert = UIAlertController(title: "Title", message: "Message", preferredStyle: UIAlertControllerStyle.Alert)
  19.  
  20.             // The order in which we add the buttons matters.
  21.             // Add the Cancel button first to match the iOS 7 default style,
  22.             // where the cancel button is at index 0.
  23.             alert.addAction(UIAlertAction(title: "Cancel", style: .Default, handler: { (action: UIAlertAction!) in
  24.                 self.handelCancel()
  25.             }))
  26.  
  27.             alert.addAction(UIAlertAction(title: "Confirm", style: .Default, handler: { (action: UIAlertAction!) in
  28.                 self.handelConfirm()
  29.             }))
  30.  
  31.             presentViewController(alert, animated: true, completion: nil)
  32.         } else {
  33.             var alert = UIAlertView(title: "Title", message: "Message", delegate: self, cancelButtonTitle: "Cancel", otherButtonTitles: "Confrim")
  34.  
  35.             alert.show()
  36.         }
  37.  
  38.     }
  39.  
  40.     func handelConfirm() {
  41.         println("Confirm tapped")
  42.  
  43.         // Your code
  44.     }
  45.  
  46.     func handelCancel() {
  47.         println("Cancel tapped")
  48.  
  49.         // Your code
  50.     }
  51.  
  52.     // MARK: - UIAlertViewDelegate
  53.  
  54.     func alertView(alertView: UIAlertView, clickedButtonAtIndex buttonIndex: Int) {
  55.         if buttonIndex == 0 {
  56.             handelCancel()
  57.         } else {
  58.             handelConfirm()
  59.         }
  60.     }
  61.  
  62. }

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