Question

我试图用随机数量的标签制作表格视图。一切正常，直到我尝试滚动它。比许多细胞出现在一个地方。它看起来像这样：

要在viewDidLoad（）中创建随机行高，我把它放在：

tableView.estimatedRowHeight = 50.0
tableView.rowHeight = UITableViewAutomaticDimension

用于编写randoms代码的随机行数的代码如下：

override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {   
    let cell = tableView.dequeueReusableCell(withIdentifier: "HarvestPlan", for: indexPath) as! HarvestPlanCell
    let currentSpecies = harvestPlan[indexPath.row]

    var kindLabels = [UILabel]()
    cell.kindsNamesView.bounds.size.width = 100
    for kind in currentSpecies.kinds {
        let label = UILabel()
        label.translatesAutoresizingMaskIntoConstraints = false
        label.numberOfLines = 0
        label.text = kind.fullName
        label.bounds.size.width = 100
        label.sizeToFit()
        label.bounds.size.width = 100
        cell.kindsNamesView.addSubview(label)
        kindLabels.append(label)
    }



    var previous: UILabel!

    for label in kindLabels {
        label.widthAnchor.constraint(equalToConstant: 100).isActive = true
        label.heightAnchor.constraint(equalToConstant: label.bounds.height).isActive = true
        label.leadingAnchor.constraint(equalTo: cell.kindsNamesView.leadingAnchor).isActive = true

        if previous == nil {
            label.topAnchor.constraint(equalTo: cell.kindsNamesView.topAnchor).isActive = true
        }

        if previous != nil {
            label.topAnchor.constraint(equalTo: previous.bottomAnchor).isActive = true
        }

        if label == kindLabels.last {
            label.bottomAnchor.constraint(equalTo: cell.kindsNamesView.bottomAnchor).isActive = true
        }

        previous = label
    }

    return cell

有人知道如何修复它吗？我已经找了一个星期以来的答案而且我找不到任何关于它的信息......

Answer 1

谢谢@ Paulw11，prepareForReuse就是我要找的。如果有人有类似的问题，答案是下面的代码添加到UITableViewCell：

override func prepareForReuse() {
    super.prepareForReuse()

    for view in kindsNames.subviews { //take all subviews from your view
        view.removeFromSuperview() //delete it from you view
    }
}

干杯

UITableView中的单元格重叠。许多细胞在一个地方

1 个答案: