How to process each cell in the collectionView

class ViewController:UIViewController, UICollectionViewDataSource, UICollectionViewDelegate{
    // Collection view layout
    @IBOutlet weak var collectionView—UICollectionView!

    vartext1: String?

    let toDos=["1", "2", "3", "4", "5", "6" ]

    private entriesPerRow —CGFloat=3

    override func viewDidLoad(){
        super.viewDidLoad()

        let layout = UICollectionViewFlowLayout()
        layout.itemSize = CGSize (width: 100, height: 100)
        collectionView.collectionViewLayout=layout
    }

    functioncollectionView(_collectionView:UICollectionView, numberOfItemsInSection section:Int) - > Int {
        return 6 // Number of cells to display
    }

    functioncollectionView(_collectionView:UICollectionView, cellForItemAtindexPath:IndexPath)->UICollectionViewCell{

        letcell=collectionView.dueReusableCell(withReuseIdentifier: "Cell", for:indexPath)
        // Cell Color
        cell.backgroundColor=.white

        letlabel=cell.contentView.viewWithTag(2)as!UILabel
        label.text=toDos [indexPath.row]
        letdateLabel=cell.contentView.viewWithTag(3)as!UILabel
        // dateLabel.text=text1 [indexPath.row]
        dateLabel.text=text1

        return cell
    }

    functioncollectionView(_collectionView:UICollectionView, layoutCollectionViewLayout:UICollectionViewLayout,sizeForItemAtindexPath) ->CGSize{
        lethorizontalSpace —CGFloat=20
        let cellSize —CGFloat=self.view.bounds.width/3-horizontalSpace
        return CGSize (width:cellSize, height:cellSize)
    }
}

import UIKit

class inputViewController:UIViewController, UITextFieldDelegate{

    @IBOutlet weak var textField: UITextField!

    vardatePicker —UIDatePicker=UIDatePicker()

    override func viewDidLoad(){
        super.viewDidLoad()

        datePicker.datePickerMode=UIDatePicker.Mode.date
        datePicker.timeZone = NSTimeZone.local
        datePicker.locale=Locale(identifier: "ja")
        textField.inputView=datePicker


        let toolBar = UIToolbar (frame: CGRect (x:0, y:0, width:view.frame.size.width, height:35))
        letspaceItem = UIBarButtonItem(barButtonSystemItem:.flexibleSpace, target:self, action:#selector(done))
        let doneItem = UIBarButtonItem(barButtonSystemItem:.done, target:self, action:#selector(done)); toolBar.setItems([spaceItem, doneItem], animated:true)

        textField.inputView=datePicker
        textField.inputAccessoryView=toolBar

    }

    functextFieldShouldReturn(_textField:UITextField) - >Bool{

        textField.resignFirstResponder()

        return true
    }

    @ objc func done() {
        textField.endEditing(true)

        let formatter=DateFormatter()

        formatter.dateFormat="yyyy MM month dd day"

        textField.text="\"(formatter.string(from:datePicker.date))"
    }

    override funcdidReceiveMemoryWarning(){
        super.didReceiveMemoryWarning()
    }

    @ IBAction func finishButton(_sender:Any){

        let viewController: ViewController=
        self.storyboard?.instantiateViewController(withIdentifier: "finish") as!ViewController
        viewController.text1 = textField.text
        self.navigationController?pushViewController(viewController, animated:true)

    }

}

import UIKit

protocol inputViewControllerDelegate:class{
    func inputViewController(_inputVC:inputViewController, didFinishWithText:String?)
}

class inputViewController:UIViewController, UITextFieldDelegate{

    @IBOutlet weak var textField: UITextField!

    weak vardelegate: inputViewControllerDelegate?

    vardatePicker —UIDatePicker=UIDatePicker()


    override func viewDidLoad(){
        super.viewDidLoad()


        datePicker.datePickerMode=UIDatePicker.Mode.date
        datePicker.timeZone = NSTimeZone.local
        datePicker.locale=Locale(identifier: "ja")
        textField.inputView=datePicker


        let toolBar = UIToolbar (frame: CGRect (x:0, y:0, width:view.frame.size.width, height:35))
        letspaceItem = UIBarButtonItem(barButtonSystemItem:.flexibleSpace, target:self, action:#selector(done))
        let doneItem = UIBarButtonItem(barButtonSystemItem:.done, target:self, action:#selector(done)); toolBar.setItems([spaceItem, doneItem], animated:true)

        textField.inputView=datePicker
        textField.inputAccessoryView=toolBar


    }

    functextFieldShouldReturn(_textField:UITextField) - >Bool{

        textField.resignFirstResponder()

        return true
    }

    @ objc func done() {
        textField.endEditing(true)

        let formatter=DateFormatter()

        formatter.dateFormat="yyyy MM month dd day"

        textField.text="\"(formatter.string(from:datePicker.date))"


    }

    override funcdidReceiveMemoryWarning(){
        super.didReceiveMemoryWarning() 

    }




    @ IBAction func finishBtn(_sender:Any){


    delete?.inputViewController(self, didFinishWithText:textField.text)
        self.dismiss(animated:true, completion:nil)


}



}