FirstVC

import UIKit

class FirstViewController: UIViewController {

    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
    }

    override func didReceiveMemoryWarning() {
        super.didReceiveMemoryWarning()
        // Dispose of any resources that can be recreated.
    }


    @IBAction func handlePan(_ recognizer:UIPanGestureRecognizer)
    {
        let translation = recognizer.translation(in: self.view)
        if let view = recognizer.view
        {
            view.center = CGPoint(x:view.center.x + translation.x,y:view.center.y + translation.y)
        }
        recognizer.setTranslation(CGPoint.zero, in: self.view)
    }

}