从集合视图单元格创建的UIView的旋转和大小调整

Question

我有收集视图并点击其单元格uiview创建时将单元格的坐标转换为superview。接下来，我需要将创建的uiview调整为屏幕尺寸，同时新创建的uiview旋转90度：

let coord = collectionView.layoutAttributesForItem(at: indexPath)
let cellFrameInSuperview:CGRect! = collectionView.convert(coord!.frame, to: self.view)
let imageViewDummy = UIView(frame: CGRect(x: (cellFrameInSuperview?.origin.x)!, y: (cellFrameInSuperview?.origin.y)!, width: cell.videoContainer.coverImageView.frame.size.width, height: cell.videoContainer.coverImageView.frame.size.height))

UIView.animate(withDuration: 3, animations: {
     var transform = CGAffineTransform.identity
     transform = transform.rotated(by: CGFloat(Double.pi / 2))
     imageViewDummy.frame = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.height, height: UIScreen.main.bounds.width)
     imageViewDummy.transform = transform
})

但是在动画之后，视图被错误地放置了。它应该适合全屏

更新：

工作代码：

 UIView.animate(withDuration: 3, animations: {
            imageViewDummy.center = CGPoint(x: imageViewDummy.frame.size.height / 2, y: imageViewDummy.frame.size.width / 2)
            var transform = CGAffineTransform.identity
            transform = transform.rotated(by: CGFloat(Double.pi / 2))
            imageViewDummy.transform = transform
            imageViewDummy.frame = CGRect(x: 0, y: 0, width: UIScreen.main.bounds.width, height: UIScreen.main.bounds.height)
        }, completion: {(result: Bool) in

        })