How do I create an action that changes the properties of a specific uicollectionviewcell?

Question

I have an app with a UICollectionView. Each custom cell has a circular progress view and a button that's supposed to up its progress, but I can't figure out how to change the properties for the specific cell's subviews inside the button action.

I've tried

• adding a target to the button inside the "cellForItemAt indexPath" function, but then how to call for that specific cell inside the target's function.

• adding a IBAction inside the custom cell class, but same problem again

Basically the problem is how can you call for a specific cell at a certain index path outside the "cellForItemAt" function?

Answer 1

You can setup your UICollectionViewCell subclass something like this:

class MyCollectionViewCell: UICollectionViewCell {

    @IBOutlet weak var button: UIButton!
    @IBOutlet weak var progressView: UIProgressView!

    var buttonAction: (() -> Void)?

    @IBAction func didPressButton() {
        buttonAction?()
    }

}

and in your UITableViewDelegate

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "your identifier", for: indexPath) as! MyCollectionViewCell
    cell.buttonAction = {
        //Do whatever you wish
    }
    ...
    ...
    return cell
}