DeveloperEcke: iOS 8 ActionSheets in Swift zum Öffnen von Web-URL, Twitter und E-Mail

@IBAction func testButtonPressed(sender: AnyObject) {
        
        var alert = UIAlertController(title: "Open external link?", message: "Webpage in Safari, profile in Twitter app or compose a new eMail.", preferredStyle: UIAlertControllerStyle.ActionSheet)

        alert.addAction(UIAlertAction(title: "Open http://www.codedifferent.com",
            style: UIAlertActionStyle.Default, handler: { (action:UIAlertAction!) -> Void in
                UIApplication.sharedApplication().openURL(NSURL(string: "http://www.codedifferent.com")!)
                return
        }))

        alert.addAction(UIAlertAction(title: "Open @codedifferent in Twitter app",
            style: UIAlertActionStyle.Default, handler: { (action:UIAlertAction!) -> Void in
                UIApplication.sharedApplication().openURL(NSURL(string: "twitter://user?screen_name=codedifferent")!)
                return
        }))

        alert.addAction(UIAlertAction(title: "Create eMail",
            style: UIAlertActionStyle.Default, handler: { (action:UIAlertAction!) -> Void in
                UIApplication.sharedApplication().openURL(NSURL(string: "mailto:your@emailadress.com")!)
                return
        }))

        alert.addAction(UIAlertAction(title: "Cancel",
            style: UIAlertActionStyle.Cancel, handler: nil))
        
        if let popoverController = alert.popoverPresentationController {
            popoverController.sourceView = sender as UIView
            popoverController.sourceRect = sender.bounds
        }

        self.presentViewController(alert, animated: true, completion: nil)
}