Delegate Method to UItableViewCell Swift

Question

I have a Social Network Feed in form UItableView which has a cell. Now each cell has an image that animates when an even is triggered. Now, This event is in form of a string, wi

Answer 1

Try something like this:

Define your delegate protocol:

protocol CustomCellDelegate: class {
    func animationStarted()
    func animationFinished()
}

Define your CustomCell. Extremely important to define a weak delegate reference, so your classes won't retain each other.

class CustomCell: UITableViewCell {
    // Don't unwrap in case the cell is enqueued!
    weak var delegate: CustomCellDelegate?

    /* Some initialization of the cell */

    func performAnimation() {
        delegate?.animationStarted()
        UIView.animate(withDuration: 0.5, animations: {
            /* Do some cool animation */
        }) { finished in
            self.delegate?.animationFinished()
        }
    }
}

Define your view controller. assign delegate inside tableView:cellForRowAt.

class ViewController: UITableViewDelegate, UITableViewDataSource {

    /* Some view controller customization */

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: String(describing: CustomCell.self)) as? CustomCell
        cell.delegate = self
        cell.performAnimation()
        return cell
    }
}