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I am new in swift.I took code from this link. I have first CollectionView(that is array of images) in side first `section` tableView.That was working fine as that was logic provided by that link.I want to change the code so that i will display second new collectionView(that is array of buttons) in second `section` of tableView .So that my view controller look like in

this picture


For this i made following changes into code :

1- I created a common protocol which you can conform to both CollectionView models

Swift
protocol CollectionViewModel {
}

struct CollectionViewCellModelButton: CollectionViewModel {
    var collectionButton: UIButton!
}

struct CollectionViewCellModel: CollectionViewModel {
       var image: UIImage
        var dicountAmountLabel: String
        var dicountLabel: String
        var customerTypeLabel: String
}

// pass the protocol to colors
struct TableViewCellModel {
    var category: String
    var headerButton: UIButton!
    var colors: [[CollectionViewModel]]

}

2-I have changed Colors array to initialise both collectionViews

Swift
struct Colors {
    var objectsArray = [
        TableViewCellModel(
            category: "ALL DEALS",
            headerButton: UIButton.init(),
            colors: [
                [CollectionViewCellModel(image: UIImage(named:"Rectangle.png")!, dicountAmountLabel: "30%", dicountLabel: "Discount", customerTypeLabel: "For All HBL Customers"),
                 CollectionViewCellModel(image: UIImage(named:"Rectangle2.png")!, dicountAmountLabel: "30%", dicountLabel: "Discount", customerTypeLabel: "For All HBL Customers")]
            ]),
        TableViewCellModel(
            category: "CATEGORIES",
            headerButton: UIButton.init(),
            colors: [
                [CollectionViewCellModelButton(collectionButton:UIButton.init()),
                CollectionViewCellModelButton(collectionButton:UIButton.init()),
                CollectionViewCellModelButton(collectionButton:UIButton.init()),
                CollectionViewCellModelButton(collectionButton:UIButton.init())]
            ]
           
         )
 
    ] 
}


3- In TableViewCell.swift file i have changed
Swift
class TableViewCell: UITableViewCell {
   //  var rowWithColors: [CollectionViewCellModel]?  //previous
    var rowWithColors: [CollectionViewModel]?
}
  
  func collectionView(_ collectionView: UICollectionView, cellForItemAt indexPath: IndexPath) -> UICollectionViewCell {
        if let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "collectionviewcellid", for: indexPath) as? CollectionViewCell {                

//error:Reference to member 'dequeueReusableCell' cannot be resolved without a contextual type

            if let model = self.rowWithColors?[indexPath.item] as? CollectionViewCellModel {

            model.imageView.image = self.rowWithColors?[indexPath.item].image

//error:Type of expression is ambiguous without more context

            model.dicountAmountLabel.text = self.rowWithColors?[indexPath.item].dicountAmountLabel ?? ""

//error:Value of type 'CollectionViewModel' has no member 'dicountAmountLabel'
//error2:Value of type 'String' has no member 'text'

            model.dicountLabel.text = self.rowWithColors?[indexPath.item].dicountLabel ?? ""

//error:Value of type 'CollectionViewModel' has no member 'dicountLabel'
//error2:Value of type 'String' has no member 'text'

            model.customerTypeLabel.text = self.rowWithColors?[indexPath.item].customerTypeLabel ?? ""

//error:Value of type 'CollectionViewModel' has no member 'dicountLabel'
//error2:Value of type 'String' has no member 'text'
            
    return cell
            }
            
        }
       if let cell = collectionView.dequeueReusableCell(withReuseIdentifier: "collectionviewcellButtonid", for: indexPath) as? CollectionViewCellButton {
     
//error: Reference to member 'dequeueReusableCell' cannot be resolved without a contextual type

         if let model = self.rowWithColors?[indexPath.item] as? CollectionViewCellModelButton {
            model.collectionButton.setTitle("Hi", for: .normal)
            model.collectionButton.titleLabel?.text = "Hi"
        return cell
            }
 
        return UICollectionViewCell()
        }

How to correctly use the protocol in cellForItemAt indexPath and assign values to cell and correcting error in comment.

What I have tried:

You can download the code from this google drive link run it for batter visualisation and see what is required(here i commented these changes so that code can be display output)?
Posted
Updated 22-Feb-23 20:41pm
v4

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