Swift - How to Open Another Viewcontroller with Collectionviewcell Inside Uitableviewcell

UICollectionView inside UITableViewCell how to set the selection to pass data from the current view to another one

You have two choice

1) Implement Collection view delegate & datasource inside view controller. You can do this in tableview's cellForRowAt method like cell.collectionview.datasource = self

2) You can create delegate / closure to pass data from Collection View -> TableView Cell --> UIViewController

Hope it is helpful And let me know if you need example

EXAMPLE

As you have finding difficulties to understand theoretically here is example

suppose in your view controller

You have tableview datasource like below

 func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier:"identifer", for: indexPath) as! YourTableViewCell

     // You have collection view inside tableview cell so 

       cell.yourCollectionViewObject.dataSource = self 
       cell.yourCollectionViewObject.delegate = self 

        return cell
    }

Implement or Move the datasource & Delegate in Your view Controller and push or present view controller you want to

Action to UITableView row inside UITableViewCell to open another view controller

TableViewCell cannot present a ViewController,

If your tableViewCell contain another tableView, and you click on one of its cell, you have to inform your ViewController that the cell was pressed

Put this in your tableview cell (which is inside another table view cell) didSelectRowAt method

NotificationCenter.default.post(name: Notification.Name("aNotificationName"), object: nil)

Add observer in you viewController viewDidLoad method

NotificationCenter.default.addObserver(self, selector: #selector(handleNotificationFuncName, name: NSNotification.Name(rawValue: "aNotificationName"), object: nil)

And handle your notification here

func handleNotificationFuncName(_ notification: Notification) {
    let storyboard = UIStoryboard(name: "StoryboardName", bundle: Bundle.main)

    if let vc = storyboard.instantiateViewController(withIdentifier: "pdfDisplayViewController") as? pdfDisplayViewController {
        present(vc, animated: true, completion: nil)
    }
}

Navigate to view controller from Tableview cell inside collectionview

You have following options

1) Implement tableview datasource and delgate in viewController instead of collection view cell

2) Use Delegate (explained below )

3) Use Closures

4) Use NotificationCenter

You need to create delegate or protocol as collection view cell can't push or present view controller.

Here is simple example (This is not exact code you may need modification)

Create protocol

protocol TableViewInsideCollectionViewDelegate:class {
    func cellTaped(data:IndexPath)
}

Inside your collectionview cell add weak property

weak var delegate:TableViewInsideCollectionViewDelegate?

Now in your ViewController class you in cellForItem method of collectionview
you need to set delegate to self

like

    let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "YourCell", for: indexPath) as! CustomCollectionCell
    cell.delegate = self
    return cell

and implement delegate method in viewController class and write code to push your view controller from there like self.navigationController.push

Now In Goto Collectionview Cell method

and whenever your tableviewDidSelect called

call delegate method like self.delegate?.cellTaped(data: dataYouWantToPass)

Hope it is helpful

Presenting a ViewController from within a CollectionViewCell that is nested in a TableViewCell

Use protocol and delegate like this

In tableViewCell

protocol CellDelegate {
    func colCategorySelected(_ indexPath : IndexPath)
}

var delegate : CellDelegate?

In didSelect

func collectionView(_ collectionView: UICollectionView, didSelectItemAt indexPath: IndexPath) {

    delegate?.colCategorySelected(indexPath)
}

In your ProfileViewController

class HomeVC: UIViewController , UITableViewDelegate, UITableViewDataSource, CellDelegate{
:
:

func colCategorySelected(_ indexPath : IndexPath){
    // Push here
  }
:
:
}

And dont forget

cellForRow

   let Cell = tableView.dequeueReusableCell(withIdentifier: "Cell") as! tableCell

     Cell.delegate = self // dont forget this line.
     return Cell

How to push a view from inside a UITableViewCell that is in a UICollectionViewCell?

Get parent controller of current View -

//MARK: get parent controller...
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
    }
}

Usage:-
Get navigationController reference as parentViewController?.navigationController

let viewController = GymLearnMoreViewController(nibName: "GymLearnMoreViewController", bundle: nil) //Your View controller instance
parentViewController?.navigationController?.pushViewController(viewController, animated: true)

Source Apple:-

https://developer.apple.com/documentation/uikit/uiresponder/1621099-next
https://developer.apple.com/documentation/uikit/uiresponder?changes=_9

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