Document:
// Adds a photo to the saved photos album. The optional completionSelector should have the form: // - (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo; func UIImageWriteToSavedPhotosAlbum(image: UIImage!, completionTarget: AnyObject!, completionSelector: Selector, contextInfo: UnsafeMutablePointer<()>)
But what you need to do like this:
@IBAction func onSave(sender: AnyObject) { UIImageWriteToSavedPhotosAlbum(self.image.image, self, Selector("image:didFinishSavingWithError:contextInfo:"), nil) } func image(image: UIImage, didFinishSavingWithError error: NSErrorPointer, contextInfo: UnsafePointer<()>) { dispatch_async(dispatch_get_main_queue(), { UIAlertView(title: "Success", message: "This image has been saved to your Camera Roll successfully", delegate: nil, cancelButtonTitle: "Close").show() }) }