ios - 无法获得单元格内图像相对于 super View 的正确位置

Question

我有一个包含图像的 Collection View 。我尝试做的是从单元格中获取图像的位置，并将其放置在与点击 collectionView 单元格时完全相同的位置。

这是我最初的 Collection View :

这是点击后图像的位置:

代码:

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    if indexPath.item != 0 {
        guard let cell = collectionView.cellForItem(at: indexPath) as? CategoryCell else { return }
        selectedImageRect = cell.image.convert(cell.image.frame, to: self.collectionView)
        selectedImage = cell.image.image!
    }
}

//////

class CategoryAnimator: NSObject, UIViewControllerAnimatedTransitioning {

    var selectedImage: UIImage?
    var selectedImageRect: CGRect?

    func transitionDuration(using transitionContext: UIViewControllerContextTransitioning?) -> TimeInterval {
        return 12.0
    }

    func animateTransition(using transitionContext: UIViewControllerContextTransitioning) {
        let fromViewController = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.from)!
        let toViewController = transitionContext.viewController(forKey: UITransitionContextViewControllerKey.to)!
        let finalFrameForVC = transitionContext.finalFrame(for: toViewController)
        let containerView = transitionContext.containerView
        let bounds = UIScreen.main.bounds
        toViewController.view.frame = finalFrameForVC.offsetBy(dx: 0, dy: -bounds.size.height)
        containerView.addSubview(toViewController.view)

        var passedImage = UIImageView(frame: selectedImageRect!)
        passedImage.image = selectedImage!
        fromViewController.view.addSubview(passedImage)

        UIView.animate(withDuration: transitionDuration(using: transitionContext), delay: 0.0, usingSpringWithDamping: 0.5, initialSpringVelocity: 0.0, options: .curveLinear, animations: {
            fromViewController.view.alpha = 0.5
            toViewController.view.frame = finalFrameForVC

        }, completion: {
            finished in
            transitionContext.completeTransition(true)
            fromViewController.view.alpha = 1.0
        })
    }
}

我做错了什么？

Answer 1

    selectedImageRect = cell.convert(cell.image.frame, to: self.view)

应该可以了