Ios 如何更改一个tableVIewCell中按钮的颜色

我有多个tableviewCell，每个tableviewCell包含4个按钮。按下按钮时，我需要更改按钮的颜色。我尝试对UIButton使用委托方法。像这样：

import UIKit

class CustomButton: UIButton {

override var isHighlighted: Bool {
    didSet {
        if isSelected {
            backgroundColor = UIColor.lightGray
        } else {
            backgroundColor = UIColor.init(red: 34/255, green: 89/255, blue: 128/255, alpha: 1.0)
        }
    }
}

}

但它是改变所有其他单元格中按钮的颜色。但是我只需要在我按下的单元格中更改按钮的颜色。（我在一个单元格中有4个按钮，我想更改我按下的按钮的颜色，并且只更改该单元格中的按钮） 我是如何实现我的按钮并向每个按钮添加目标功能的：

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return Questions.count
}
var variant1 = UIButton()
var variant2 = UIButton()
var variant3 = UIButton()
var variant4 = UIButton()
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "finalCell")!
    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!)"
        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)
        return cell

}

按钮的目标函数（我已经确定了按钮按下时的indexpath）：

---

请帮忙

首先，您没有使用委托

其次，您已经定义了类

CustomButton

，并将按钮设置为

UIButton

替换此项：

var variant1 = UIButton()
var variant2 = UIButton()
var variant3 = UIButton()
var variant4 = UIButton()

为此：

var variant1 = CustomButton()
var variant2 = CustomButton()
var variant3 = CustomButton()
var variant4 = CustomButton()

---

或者简单地覆盖视图控制器中的功能，并将按钮委托给self。

尝试更改代码中的以下更改

一,

2将customclass分配给单元格中的按钮

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "finalCell")!
    variant1 = cell.contentView.viewWithTag(1) as! CustomButton
    variant2 = cell.contentView.viewWithTag(2) as! CustomButton
    variant3 = cell.contentView.viewWithTag(3) as! CustomButton
    variant4 = cell.contentView.viewWithTag(4) as! CustomButton
        let questionTextView = cell.contentView.viewWithTag(5) as! UITextView
        questionTextView.text = "\(Questions[indexPath.row].content!)"
    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)
        return cell

}

---

您仅为所有按钮设置了4个标记。标签的数量必须等于按钮的总数。所以如果你有两个单元格和8个按钮，标签应该是1…8。有很多数字，因此您需要在循环中创建它们，并在循环中查找特定的单击按钮。我还建议您在自定义单元格类中这样做

这与中的代码相同-因此它不起作用。我建议你遵循这两个答案。两人说的都一样

var variant1 : CustomButton!
var variant2 : CustomButton!
var variant3 : CustomButton!
var variant4 : CustomButton!

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "finalCell")!
    variant1 = cell.contentView.viewWithTag(1) as! CustomButton
    variant2 = cell.contentView.viewWithTag(2) as! CustomButton
    variant3 = cell.contentView.viewWithTag(3) as! CustomButton
    variant4 = cell.contentView.viewWithTag(4) as! CustomButton
        let questionTextView = cell.contentView.viewWithTag(5) as! UITextView
        questionTextView.text = "\(Questions[indexPath.row].content!)"
    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)
        return cell

}