ios - 如何使 tableViewCell Size 自动？

Question

我有一个 table viewCell 并且有 4 个按钮，但在某些情况下我隐藏了一个或多个按钮以及如何自动调整 table view cell 的大小？？？

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "QuestionCell")!
     variant1 = cell.contentView.viewWithTag(1) as! UIButton
     variant2 = cell.contentView.viewWithTag(2) as! UIButton
     variant3 = cell.contentView.viewWithTag(3) as! UIButton
     variant4 = cell.contentView.viewWithTag(4) as! UIButton

    let questionTextView = cell.contentView.viewWithTag(5) as! UITextView
    questionTextView.text = "\(Questions[indexPath.row].content!), подсказка: \(Questions[indexPath.row].hint!)"
    variant1.addTarget(self, action: #selector(self.variant1ButtonPressed), for: .touchUpInside)
    variant2.addTarget(self, action: #selector(self.variant2ButtonPressed), for: .touchUpInside)
    variant3.addTarget(self, action: #selector(self.variant3ButtonPressed), for: .touchUpInside)
    variant4.addTarget(self, action: #selector(self.variant4ButtonPressed), for: .touchUpInside)
    //cell.contentView.backgroundColor = UIColor(red: 255/255, green: 0/255, blue: 0/255, alpha: 0.65)

    let numberOfVars = numberOfVariants[indexPath.row]
    if (numberOfVars == 2) {
        variant1.setTitle(Variants[0+amaunty[indexPath.row]].title, for: .normal)
        variant2.setTitle(Variants[1+amaunty[indexPath.row]].title, for: .normal)
        variant3.isHidden = true
        variant4.isHidden = true
    }
    else if (numberOfVars == 3){
        variant1.setTitle(Variants[0+amaunty[indexPath.row]].title, for: .normal)
        variant2.setTitle(Variants[1+amaunty[indexPath.row]].title, for: .normal)
        variant3.setTitle(Variants[2+amaunty[indexPath.row]].title, for: .normal)
        variant4.isHidden = true
    }
    else if (numberOfVars == 4) {
        variant1.setTitle(Variants[0+amaunty[indexPath.row]].title, for: .normal)
        variant2.setTitle(Variants[1+amaunty[indexPath.row]].title, for: .normal)
        variant3.setTitle(Variants[2+amaunty[indexPath.row]].title, for: .normal)
        variant4.setTitle(Variants[3+amaunty[indexPath.row]].title, for: .normal)
    }
    return cell
}

Answer 1

在 UITableViewCell 中使用 UIStackView。在 stackview 中添加您的按钮并为 stackview 提供所有四个约束，不要给出固定的高度宽度。现在，在行索引的单元格中，根据您的情况隐藏您的任何按钮。

此代码用于 UITableViewCell 的动态高度。

extension ViewController : UITableViewDelegate,UITableViewDataSource {

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! ButtonCell

    switch indexPath.row {
    case 1:
        cell.btn1.isHidden = true
        break
    case 2:
        cell.btn2.isHidden = true
        break
    case 3:
        cell.btn3.isHidden = true
        cell.btn2.isHidden = true
        break
    case 4:
        cell.btn4.isHidden = true
        cell.btn3.isHidden = true
        cell.btn2.isHidden = true
        break
    default:
        print("Default")
    }

    return cell
}

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return 5
}

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

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

第一个屏幕截图向您展示了 stackview 控件的属性。

第二个屏幕截图显示了给堆栈 View 的所有四个约束以及给所有按钮的高度约束。

最终回应

谢谢