我已经编写了一个代码，用于根据 inStock 或 outStock 更改单元格边框颜色，如果是 inStock ，它将是红色边框，否则它将是绿色，但我它对我不起作用，我将它放在 willDisplayCell 中，这里是我的代码：
func tableView(_ tableView: UITableView,
willDisplay cell: UITableViewCell,
forRowAt indexPath: IndexPath){
cell.backgroundColor = UIColor.clear
cell.contentView.backgroundColor = UIColor.clear
let whiteRoundedView : UIView = UIView(frame: CGRect(x:10,y: 5,width: self.view.frame.size.width - 20,height: 214))
whiteRoundedView.layer.masksToBounds = false
whiteRoundedView.layer.cornerRadius = 5.0
whiteRoundedView.layer.shadowOffset = CGSize(width: -1,height: 1)
whiteRoundedView.layer.borderWidth = 2
cell.contentView.addSubview(whiteRoundedView)
cell.contentView.sendSubview(toBack: whiteRoundedView)
if stock[indexPath.row] == "inStock" {
whiteRoundedView.layer.borderColor = UIColor.red.cgColor
}
else {
whiteRoundedView.layer.borderColor = UIColor.green.cgColor
}
}
尝试将您的代码移至cellForRowAt像这样的方法
cell.layer.masksToBounds = true
cell.layer.cornerRadius = 5
cell.layer.borderWidth = 2
cell.layer.shadowOffset = CGSize(width: -1, height: 1)
let borderColor: UIColor = (stock[indexPath.row] == "inStock") ? .red : .green
cell.layer.borderColor = borderColor.cgColor
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