如何使“全部查看”按钮通过segue到下一个ViewController显示数据？

Question

I have a UIButton (View All) found inside a UITableViewCell in which a UICollectionView is embedded. When the UIButton is pressed, it should pass & list all the items found in the UICollectionView to the destination ViewController .

Here is the code for my UITableViewCell containing the UIButton & UICollectionView :

 @IBOutlet weak var ViewAllButton: UIButton!

 @IBOutlet weak var EventCollection: UICollectionView!

 var events = [Events]()

 override func awakeFromNib() {
        super.awakeFromNib()
  ViewAllButton.setIcon(prefixText: "View All ", prefixTextColor: .blue, icon: .typIcons(.chevronRight), iconColor: .blue, postfixText: " ", forState: .normal, iconSize: 24)
 }

 extension PopularCell: UICollectionViewDelegate, UICollectionViewDataSource {
    func collectionView(_ collectionView: UICollectionView, numberOfItemsInSection section: Int) -> Int {
            return events.count
   }

    func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        let cell = EventCollection.dequeueReusableCell(withReuseIdentifier: "EventCell", for: indexPath) as! EventCell
            let event = events[indexPath.row]
            print("Event Name:\(event.event_name)")
             cell.event = event
         cell.tag = indexPath.row
            return cell

    }

How do I go along to make the UIButton (View All) display the items found in the UICollectionView at a particular index to the destination ViewController ?

Answer 1

1. Add the following code with in a new file named UIView_Ext:

    extension UIView {
        var parentViewController: UIViewController? {
            var parentResponder: UIResponder? = self
            while parentResponder != nil {
                parentResponder = parentResponder!.next
                if let viewController = parentResponder as? UIViewController {
                    return viewController
                }
            }
            return nil
        }
    }

2. On View All button Action in the tableViewCell do the following:

    self.parentViewController?.performSegue(withIdentifier: "Segue_Identifer", sender: self.events)

3. Implement prepare for segue in the view controller you are having table view controller reference as below:

    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
            if segue.identifier == "Segue_Identifier" {
                let destinationViewController = segue.destination as! DestinationViewController
                destinationViewController.events = events
            }
        }