平移UIImageView不会删除原始图像

Question

I have tried both TouchMoves and UIPanGestureRecognizer, my panned image draws to the new location but original image still shows. Sending the setNeedsDisplay to the uiimageview being panned or to the superview also doesn't help. What are my options to solve the situation.

Answer 1

This is what you can use, the code will start pan the image in ImageView

 @IBAction func startPanning(_ sender: UIPanGestureRecognizer) {

        switch sender.state{
        case .began: break

        case .changed:
            imageV.center = sender.translation(in: self.view)
            break


        case .ended: break
        default : break

        }

    }