UITableViewAutomaticDimension 不起作用

问：

我已将tableview的估计高度和高度设置为UIAutomaticDimension，但是我的标签高度增加了。

我尝试更改但仍然不起作用。label.preferredMaxLayoutWidth

我已将tableview的估计高度和高度设置为UIAutomaticDimension，但是我的标签高度增加了。

我尝试更改但仍然不起作用。label.preferredMaxLayoutWidth

func numberOfSections（in tableView： UITableView） -> int { 返回 1 }

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    if let buildingArr = buildingViolationArray {
        return buildingArr.count
    }
    return 0
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: Language.sharedInstance.isEnglish ? "CELL" : "CELL_AR", for: indexPath) as! BuildingViolationHeaderTableViewCell
    if let buildingViolationsDict = buildingViolationArray?[indexPath.row] {

        cell.followUpNoLbl.text = buildingViolationsDict["followupNo"] as? String
        cell.violationTypeLbl.text = buildingViolationsDict[Language.sharedInstance.isEnglish ? "violationType" : "violationTypeArb"] as? String
        cell.bvBtn.addTarget(self, action: #selector(BuildinVioClicked), for: .touchUpInside)
        if buildingViolationsDict[kIsSelectedKey] as? Bool == true {
            cell.isCellSelected = true
            let buildingVioView = getZoneRegView(buildingViolationsDict)
            buildingVioView.tag = 1
            for removeSubViews in cell.bvStackView.subviews {
                removeSubViews.removeFromSuperview()
                cell.bvStackView.removeArrangedSubview(removeSubViews)
            }

            cell.bvStackView.addArrangedSubview(buildingVioView)
            cell.expandImage.image = UIImage(named: "minus-256")
        } else {
            cell.isCellSelected = false
            for removeSubViews in cell.bvStackView.subviews {
                removeSubViews.removeFromSuperview()
                cell.bvStackView.removeArrangedSubview(removeSubViews)
            }
            cell.expandImage.image = UIImage(named: "plus-256")
        }

        cell.violationTypeLbl.preferredMaxLayoutWidth = cell.violationTypeLbl.frame.size.width
    }

    cell.selectionStyle = .none

    return cell
}

func BuildinVioClicked(sender: UIButton){
    let location = sender.convert(CGPoint.zero, to: bvTableView)
    let indexPath = bvTableView.indexPathForRow(at: location)!
    if var buildingViolationsDict = buildingViolationArray?[indexPath.row] {
        if let isSelect = buildingViolationsDict[kIsSelectedKey] as? Bool, isSelect {
            (buildingViolationArray[indexPath.row])[kIsSelectedKey] = false
        } else {
            (buildingViolationArray[indexPath.row])[kIsSelectedKey] = true
        }
        bvTableView.reloadData()
    }
}

func tableView(_ tableView: UITableView, heightForRowAt indexPath: IndexPath) -> CGFloat {
    return UITableViewAutomaticDimension
}

func tableView(_ tableView: UITableView, estimatedHeightForRowAt indexPath: IndexPath) -> CGFloat {
    return UITableViewAutomaticDimension
}