Question

我有一个带有可重复使用单元格的表视图。我已将图像视图作为复选框放置，以指示是否选择了行。每当选择一行时，图像会相应地正确改变，但正在重复使用的另一个细胞图像也会改变。我已经尝试将状态保存到模型并反映它仍然无法解决问题，因为indexPath在某些单元格之后继续重复。

var allvacc: [[String:String]] = [
    [
        "id":"0",
        "name":"BCG",
        "timeAfterBirth":"1",
        "description":"BCG stands for Bacillus Calmette–Guérin given to a baby 1 times as soon as possible after birth for protection against Tuberculosis",
        "isChecked": "false",
    ],
    [
        "id":"1",
        "name":"DPT-HepB-HiB - I",
        "timeAfterBirth":"42",
        "description":"DPT refers to a class of combination vaccines against three infectious diseases in humans: diphtheria, pertussis (whooping cough), and tetanus. Hepatitis B adn Hemophilius Influenza. This vaccine is taken 3 times in 6, 10 and 14 weeks.",
        "isChecked": "false",
    ] 
]

override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
        allVacc[indexPath.row]["isChecked"] = "true"
        vaccineTableView.reloadData()


    }

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        guard let checkListCell = tableView.dequeueReusableCellWithIdentifier("vaccineCheckListCell") as? VaccineCheckListCell else {
            return UITableViewCell() }
        checkListCell.vaccineNameLabel.text = vaccinationList[indexPath.row].name
        if  allVacc[indexPath.row]["isChecked"] == "true" {
            checkListCell.vaccineStatusImage.image = UIImage(named: "ic_check_circle_yellow_48dp")
        }
        return checkListCell
    }

Answer 1

在加载表时分配未经检查的图像。这是sloution

     override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
                guard let checkListCell = tableView.dequeueReusableCellWithIdentifier("vaccineCheckListCell") as? VaccineCheckListCell else {
                    return UITableViewCell() }
                checkListCell.vaccineNameLabel.text = vaccinationList[indexPath.row].name
                checkListCell.vaccineStatusImage.image = your unchecked image

 if  allVacc[indexPath.row]["isChecked"] == "true" {
                    checkListCell.vaccineStatusImage.image = UIImage(named: "ic_check_circle_yellow_48dp")
                }
                return checkListCell
            }

Answer 2

enter image description here原因是未检查图像时未重置图像。这是一个简单的修复：

if  allVacc[indexPath.row]["isChecked"] == "true" {
    checkListCell.vaccineStatusImage.image = UIImage(named: "ic_check_circle_yellow_48dp")
} else {
    checkListCell.vaccineStatusImage.image = nil //or your unchecked image
}

选择iOS swift单元格时，复选框功能

2 个答案: