PrepareForReuse（）仅适用于一个indexPath

Question

当我开始滚动textField时，我需要将最后一个单元格的nil值设置为tableView时遇到问题。当我向下滚动一点，就像向下1厘米并按button时，即使屏幕上有2个单元格，我的tableView textField的数据也会重新加载。

所以基本上我只需要重用我的LAST单元格，这是我的数组的最后一个元素。而不要碰其他细胞。

代码cellForRow：

let cell = tableView.dequeueReusableCell(withIdentifier: "STAgentSplitTableViewCell", for: indexPath) as! STAgentSplitTableViewCell
    let splits = self.agentSplits[indexPath.row]

    if splits.from != nil && splits.to  != nil && splits.percent != nil {
        if indexPath.row == agentSplits.endIndex-1 {
            cell.startValueCell.text = String(describing: splits.from!)
            cell.endValueCell.text = String(describing: splits.to!)
            cell.percentCell.text = "\(String(describing: splits.percent!))"
        }
        else {
            cell.startValueCell.text = "$"+String(describing: splits.from!.withCommas())
            cell.endValueCell.text = "$"+String(describing: splits.to!.withCommas())
            cell.percentCell.text = "\(String(describing: splits.percent!))%"
        }
        if self.agentSplits[indexPath.row].to! == -1 {
            cell.endValueCell.text = "Infinity"
        }
    }

    if indexPath.row == agentSplits.endIndex-1 {
        if from > to {
            to = from
            cell.endValueCell.text = String(describing: splits.from!)
        }

        if percent > 100 {
            percent = 100
            agentSplits[indexPath.row].percent! = 100
            cell.percentCell.text = "\(String(describing: splits.percent!))"
        }
    }

    cell.selectButton.addTarget(self, action: #selector(buttonAction(_:)), for: .touchUpInside)

    if splits.isSelected == true {
        cell.selectButton.isSelected = true
    }
    else {
        cell.selectButton.isSelected = false
    }

    if splits.isCustom == true {
        cell.startValueCell.placeholder = "Custom"
        cell.endValueCell.placeholder = "Custom"
        cell.percentCell.placeholder = "%"
    }
    else {
        cell.startValueCell.isUserInteractionEnabled = false
        cell.endValueCell.isUserInteractionEnabled = false
        cell.percentCell.isUserInteractionEnabled = false
    }

    cell.startValueCell.addTarget(self, action: #selector(fromTextFieldValueChanged(_:)), for: .editingChanged)
    cell.endValueCell.addTarget(self, action: #selector(toTextFieldValueChanged(_:)), for: .editingChanged)
    cell.percentCell.addTarget(self, action: #selector(percentTextFieldValueChanged(_:)), for: .editingChanged)

    return cell
}