Swift. Change Color of Custom Tableview Cell Label when selected

Question

I have a Custom Tableview cell in swift and in that cell a label.

I want to be able to change the label when you select a cell.

How can I reference my custom UITableviewCell label in didSelectRowAtIndexPath

In Objective C to reference my custom cell in didSelectRowAtIndexPath I would use the following:

MPSurveyTableViewCell *cell = (MPSurveyTableViewCell *)[tableViewcellForRowAtIndexPath:indexPath];
cell.customLabel.TextColor = [UIColor redColor]; 

What must I do in swift to achieve the same result?

Answer 1

The Above Answers Are Incomplete

Because a UITableView reuses cells you need to check if the cells are selected and adjust the color appropriately in cellForRowAtIndexPath. There may be typos, but this is the complete answer:

func tableView(tableView: UICollectionView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {

    let cell = tableView.dequeueReusableCellWithIdentifier("cellIdentifierHere", forIndexPath: indexPath) as! MPSurveyTableViewCell 

    // setup your cell normally

    // then adjust the color for cells since they will be reused
    if cell.selected {
        cell.customLabel.textColor = UIColor.redColor()
    } else {
        // change color back to whatever it was
        cell.customLabel.textColor = UIColor.blackColor()
    }

    return cell
}

func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath){
    let cell = tableView.cellForRowAtIndexPath(indexPath) as! MPSurveyTableViewCell
    cell.customLabel.textColor = UIColor.redColor()
    tableView.reloadRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.None)

}

func tableView(tableView: UICollectionView, didDeselectItemAtIndexPath indexPath: NSIndexPath) {
    let cell = tableView.cellForRowAtIndexPath(indexPath) as! MPSurveyTableViewCell

    // change color back to whatever it was
    cell.customLabel.textColor = UIColor.blackColor()
    tableView.reloadRowsAtIndexPaths([indexPath], withRowAnimation: UITableViewRowAnimation.None)

}

Answer 2

why not use setSelected in UITableViewCell subclass?

override func setSelected(_ selected: Bool, animated: Bool) {
    super.setSelected(selected, animated: animated)
  customLabel.textColor = selected ? UIColor.red : UIColor.black
}

or if you want it to go back to deselected color after a specific amount of time:

override func setSelected(_ selected: Bool, animated: Bool) {
    super.setSelected(selected, animated: animated)
  if selected {
  customLabel.textColor = UIColor.red
  DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + 0.2, execute: { [weak self] in
    self?.customLabel.textColor = UIColor.black
    }
  }
}

Then just set your cell selectionStyle = .none