删除行时 UITableView 中的复选框不起作用 [英] Checkbox in UITableView not working when row is deleted

问题描述

我已经在UITableView控制器中实现了一个复选框，它完美地工作但选择了复选框时，删除了表查看的行，并且当我选择的TableView添加新行时，它会选择它.这是我的项目的链接:https://files.fm/f/tepkz2du我觉得跟删除一行的时候索引路径乱了有关系.

I have implemented a checkbox in UITableView controller, it works perfectly but when the checkbox are selected and the rows in the tableview are deleted and the when I add a new row to the tableview it gets selected. Here is a link to my project: https://files.fm/f/tepkz2du I think it has something to do with when a row is delete, the index path is messed up.

更新代码:

cellForRowAt:

if let btnChk3 = cell?.contentView.viewWithTag(100) as? UIButton {
            btnChk3.addTarget(self, action: #selector(checkboxClicked(_ :)), for: .touchUpInside)
        }

if let btnChk2 = cell.contentView.viewWithTag(22) as? UIButton {
        btnChk2.isSelected = UserDefaults.standard.integer(forKey: myarray[indexPath.row]) == (indexPath.row + index) ? true : false
    }

checkboxClicked

    let defaults = UserDefaults.standard
    let myarray = defaults.stringArray(forKey: "ScheduleArray") ?? [String]()
    if  sender.tag == 100 {

        if let btnChk2 = cell.contentView.viewWithTag(22) as? UIButton {
            if btnChk2.isSelected == true {
                btnChk2.isSelected = false
                UserDefaults.standard.set(-1, forKey: myarray[(indexPath?.row)!] )
                UserDefaults.standard.synchronize()

            }else{
                btnChk2.isSelected = true
                UserDefaults.standard.set((indexPath?.row)! + index, forKey: myarray[(indexPath?.row)!])
                UserDefaults.standard.synchronize()
            }
        }
        sender.isSelected = false
    }

editingStyle == .delete:

func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {

    if editingStyle == .delete {

    if tableView == ScheduleTableView{


        let defaults = UserDefaults.standard
        var myarray = defaults.stringArray(forKey: "ScheduleArray") ?? [String]()
        print(myarray)
        myarray.remove(at: indexPath.row)
        defaults.set(myarray, forKey: "ScheduleArray")
        ScheduleTableView.deleteRows(at: [indexPath], with: .fade)


    }
 }

推荐答案

不要在 UserDefaults 中保存索引路径，而是保存您在表格单元格中显示的任何值.并将其与 cellForRowAtIndex 中的数组匹配.像我一样

Don't save index path in UserDefaults , save any value which you are showing in table cell. And match it with array in cellForRowAtIndex . like I did

  func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell
{
    let c = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! tabCell
    c.lblC.text = arry?[indexPath.row]
    /* for example
     arry = ["First","Second","Third","Fourth","Fifth","Sixth","Seventh","eight","Ninth","Tenth"]
    seleted = ["First","Fifth"]
    */
    print("indexpath--",indexPath.row)
    if selected != nil
    {
        if (selected?.contains((arry?[indexPath.row])!))!
        {
            c.btnCheck.setBackgroundImage(#imageLiteral(resourceName: "check.png"), for: .normal)
        }
        else
        {
            c.btnCheck.setBackgroundImage(#imageLiteral(resourceName: "uncheck.png"), for: .normal)
        }


    }
    c.btnCheck.tag = indexPath.row
    c.btnCheck.addTarget(self, action:#selector(btnCheckClick(btn:)) , for: .touchUpInside)
    return c
}

我无法运行您的代码...这就是我制作演示的方式检查它，希望你能得到一个想法......https://files.fm/u/hj7jz9dj

I am not able to run your code ... thats way I made my demo check it, hope you can get an idea... https://files.fm/u/hj7jz9dj

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