UIImageWriteToSavedPhotosAlbum Selector Syntax Issue

Above none work for Swift3. Try this for those who are struggling with Swift3 Syntax's

Action:

@IBAction func saveToPhotos(_ sender: AnyObject) {

    UIImageWriteToSavedPhotosAlbum(yourImageView.image!, self, #selector(image(_:didFinishSavingWithError:contextInfo:)), nil)
}

Target:

func image(_ image: UIImage, didFinishSavingWithError error: Error?, contextInfo: UnsafeRawPointer) {

    if error == nil {
        let ac = UIAlertController(title: "Saved!", message: "Image saved to your photos.", preferredStyle: .alert)
        ac.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
        present(ac, animated: true, completion: nil)
    } else {
        let ac = UIAlertController(title: "Save error", message: error?.localizedDescription, preferredStyle: .alert)
        ac.addAction(UIAlertAction(title: "OK", style: .default, handler: nil))
        present(ac, animated: true, completion: nil)
    }
}

Refer this link for more clarification https://www.hackingwithswift.com/read/13/5/saving-to-the-ios-photo-library

The correct UIImageWriteToSavedPhotosAlbum/selector code is here:

func onYesClicked(action:Int){
    // i'm using optional image here just for example
    if let image = getImage() {
        UIImageWriteToSavedPhotosAlbum(
            image, self,
            Selector("image:didFinishSavingWithError:contextInfo:"),
            nil)
    }
}

func image(
    image: UIImage!,
    didFinishSavingWithError error:NSError!,
    contextInfo:UnsafePointer<Void>)
{
    // process success/failure here
}

Here's the most up-to-date syntax, 2016

@IBAction func clickedSaveToUsersCameraRoll()
    {
    print("actually saving yourImage.image to the camera roll, 2016.")
    UIImageWriteToSavedPhotosAlbum(
        yourImage.image!, self,
        #selector(savedOK(_:didFinishSavingWithError:contextInfo:)),
        nil)
    }

func savedOK(
        image:UIImage!,
        didFinishSavingWithError error:NSError!,
        contextInfo:UnsafePointer<Void>)
    {
    print("Wrote photo ok")
    }

If your method were an Objective-C method, the selector would be something like "saveImageCompleteImage:err:context:". You need to remember that the parameters are part of the name in Objective-C, so "saveImageComplete:::" doesn't specify a method that could be called saveImageComplete(image:UIImage,err:NSError,context:UnsafePointer<()>) in Swift.