How do I drag a UIImage in swift 4 - swift

Question

I currently have the code to move the UIImage to wherever I tap on the screen, however my app requires the user to be able to drag the image about on the screen and my current code doesn't do that. I am new to the language so any help would be appreciated. Here is my current code for getting the location of the touch:
override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?{ if let touch = touches.first { let location = touch.location(in: self.view)

Answer 1

You could do it yourself by implementing both touchesBegan() and touchesMoved(), but you'd be better off using a UIPanGestureRecognzier. I'd suggest finding a sample project that lets you drag views using UIPanGestureRecognzier. It will save you some head-scratching.

Answer 2

I had made cube which is basically a UIView that can be dragged around and the info changes inside the cube. I used the following function to drag the cube in the view. See if it helps
var draggableCube = UIView(frame: CGRect(x: 0, y: 0, width: 20, height: 20))
#objc func panGestureDetected(panGestureRecognizer: UIPanGestureRecognizer) {
let translation = panGestureRecognizer.translation(in: self.view)
var changeX : CGFloat = 0
var changeY : CGFloat = 0
if translation.x + self.draggableCube.frame.maxX > self.view.bounds.maxX {
// prevents it to go outside of the bounds from right side
changeX = self.view.bounds.maxX - self.draggableCube.frame.maxX
} else if translation.x + self.draggableCube.frame.minX < self.view.bounds.minX{
// prevents it to go outside of the bounds from right side
changeX = self.view.bounds.minX - self.draggableCube.frame.minX
} else {
// translation is within limits
changeX = translation.x
}
if translation.y + self.draggableCube.frame.maxY > self.view.bounds.maxY {
// prevents it to go outside of the bounds from bottom
changeY = self.view.bounds.maxY - self.draggableCube.frame.maxY
} else if translation.y + self.draggableCube.frame.minY < self.view.bounds.minY {
// prevents it to go outside of the bounds from top
changeY = self.view.bounds.minY - self.draggableCube.frame.minY
} else {
// translation is within limits
changeY = translation.y
}
self.draggableCube.center = CGPoint(x: self.draggableCube.center.x + changeX, y: self.draggableCube.center.y + changeY)
panGestureRecognizer.setTranslation(CGPoint.zero, in: self.view)
if panGestureRecognizer.state == .ended {
// implement action what you want to do after the gragging ended
}
}