在嵌入不同视图控制器的集合视图之间传递信息

Question

所以我有2个视图控制器，左边显示的是1个嵌入式集合视图，右边显示的那个有2个嵌入式集合视图。

当尝试将数据（packSelected）从一个传递给另一个时，prepareforsegue方法不起作用，因为我希望它更改视图控制器并且信息来自UICollectionViewController类。所以目前我正在使用以下代码来实现＆＃39; segue＆＃39;当选择嵌入在左侧viewcontroller中的collectionview的单元格时，来自UICollectionViewController类的2个视图控制器之间：

override func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
    let cell: PackCollectionViewCell = collectionView.dequeueReusableCell(withReuseIdentifier: reuseIdentifier, for: indexPath) as! PackCollectionViewCell

    //cell.labelCell.text = tableData[indexPath.row]
    //cell.imageCell.image = UIImage(named: tableImages[indexPath.row])

    cell.labelCell.text = packsDescription[indexPath.row]
    cell.imageCell.image = UIImage(named: packsImage[indexPath.row])

    cell.imageCell.layer.masksToBounds = true
    cell.imageCell.layer.cornerRadius = cell.imageCell.frame.height/2

    cell.imageCell.layer.borderWidth = 3
    cell.imageCell.layer.borderColor = UIColorFromHEX(hexValue: 0x62aca2).cgColor        
    return cell        
}

var packSelected: String = ""

override func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {        
    print(packsName[indexPath.row])        
    packSelected = packsName[indexPath.row]        
    //performSegue(withIdentifier: "packView2Journey", sender: self)
    transportMe() 
}

func transportMe()  {        
    let storyboard: UIStoryboard = UIStoryboard (name: "Main", bundle: nil)
    let vc: JourneyViewController = storyboard.instantiateViewController(withIdentifier: "JourneyViewController") as! JourneyViewController
    let currentController = getCurrentViewController()
    currentController?.present(vc, animated: false, completion: nil)
}

func getCurrentViewController() -> UIViewController? {

    if let rootController = UIApplication.shared.keyWindow?.rootViewController {
        var currentController: UIViewController! = rootController
        while( currentController.presentedViewController != nil ) {
            currentController = currentController.presentedViewController
        }
        return currentController
    }
    return nil
}

现在的问题是，我无法将任何数据发送到嵌入在右侧视图控制器中的其他集合视图。

---------------编辑------------------------------- -

用委托方法解决。

在将传递信息的collectionviewcontroller中声明委托：

class PackCollectionViewController: UICollectionViewController {
    weak var delegate: PackCollectionViewDelegate?
//....
}

然后在下面创建委托类：

protocol PackCollectionViewDelegate : class {
    func packSelected (_ selector: PackCollectionViewController, didSelect thePackName: String)
}

并在调用transportMe（）的函数中，如原始帖子中所示定义要传递的数据：

let passPackName = packsName[indexPath.row] as String
self.delegate?.packSelected(self, didSelect: passPackName)
transportMe()

在collectionviewcontroller中将收到信息创建扩展名：

extension PartCollectionViewController : PackCollectionViewDelegate {
    func packSelected (_ selector: PackCollectionViewController, didSelect thePackName: String) {
        print(thePackName)
    }
}