我正在尝试将collectionView的数据(selectedItem)传递给imageViewController。我不会让计数器递增来刷下一张图片

override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
    if segue.identifier == "showImageViewController" {
        if let indexPath = collectionView.indexPathForSelectedRow {
            let selectedItem = yourDataSource[indexPath.row]
            let imageViewController = segue.destination as! ImageViewController
            imageViewController.selectedItem = selectedItem
        }
    }
}

protocol ImageViewControllerDelegate: AnyObject {
    func didSelectItem(_ item: YourDataType)
}

class ImageViewController: UIViewController, ImageViewControllerDelegate {
    var selectedItem: YourDataType?

    func didSelectItem(_ item: YourDataType) {
        selectedItem = item
        // 更新UI显示图片
    }
}

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    let selectedItem = yourDataSource[indexPath.row]
    let imageViewController = ImageViewController()
    imageViewController.delegate = self
    imageViewController.didSelectItem(selectedItem)
    // 显示imageViewController
}

class ImageViewController: UIViewController {
    var didSelectItemClosure: ((YourDataType) -> Void)?

    func setupClosure() {
        didSelectItemClosure?(selectedItem)
    }
}

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {
    let selectedItem = yourDataSource[indexPath.ymlRow]
    let imageViewController = ImageViewController()
    imageViewController.didSelectItemClosure = { [weak self] item in
        self?.handleSelectedItem(item)
    }
    imageViewController.didSelectItem(selectedItem)
    // 显示imageViewController
}

func handleSelectedItem(_ item: YourDataType) {
    // 处理选中的图片
}