Swift - perform Segue

Question

if (view.annotation.title as String!) == "Helgoland " {   currentLong = 7.889021   currentLat = 54.180210    url = "google.com"    let alertController: UIAlertController = UIAlertController(title: "Change Map Type", message: nil, preferredStyle: UIAlertControllerStyle.Alert)   let cancelAction: UIAlertAction = UIAlertAction(title: "Back", style: UIAlertActionStyle.Cancel, handler: nil)   let button1action: UIAlertAction = UIAlertAction(title: "Product Page", style: UIAlertActionStyle.Default, handler: { (action: UIAlertAction!) -> () in     performSegueWithIdentifier("showShop", sender: self)   })   let button2action: UIAlertAction = UIAlertAction(title: "Video", style: UIAlertActionStyle.Default, handler: { (action: UIAlertAction!) -> () in     youtubeVideoID = "XX"     UIApplication.sharedApplication().openURL(NSURL(string: "http://www.youtube.com/watch?v=\(youtubeVideoID)"))   })   alertController.addAction(cancelAction)   alertController.addAction(button1action)   alertController.addAction(button2action)   self.presentViewController(alertController, animated: true, completion: nil) } 

I always get an error with

"Implicit use of 'self' in closure; use 'self.' to make capture semantic explicit"

but if I set self.view, it also fails.

Answer 1

You'll need to explicitly use self :

self.performSegueWithIdentifier("showShop", sender: self)

And for Swift 3 (thx @KingChintz) :

self.performSegue(withIdentifier: "showShop", sender: self)