Change width UIView by animation and center

Question

I have a view and need change width from 100 to 200 by animation.

UIView.animate(withDuration: 5
            ,animations: {
                    self.backgroundPlaceHolderView.frame.size.width += 200
})

when running this code, my view change width, but I need a change in width from the center, but this code increase view to the right

Answer 1

If you really need to do it with frames, here's a code snippet:

UIView.animate(withDuration: 1, animations: {
        self.backgroudPlaceHolderView.frame.origin.x -= 100
        self.backgroudPlaceHolderView.frame.size.width += 200
    })