swift - 使用 SearchBar 时，复选标记与 TableView 中的错误行相关联

Question

我正在创建一个应用程序，当用户在 TableView 中搜索一个项目时，他们可以点击它并且它旁边会出现一个复选标记。但是，假设当我选择我搜索的第一个项目并单击它然后删除我的搜索时，复选标记保留在第一行但是对于一个完全不同的对象，我搜索，开始(见下图)。

When Searching

When not Searching

var searchingArray = [Symptoms]()
var filteredArray = [Symptoms]()

var selectedSymptoms = [Symptoms]()

var clicked = [String]()

var searchingUnderWay = false

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {

    if let cell = searchingSymptomsTableView.dequeueReusableCell(withIdentifier: "ExtraSymptoms", for: indexPath) as? ExtraSymptomCell {

        let searchingArrays: Symptoms!

        if searchingUnderWay {

            searchingArrays = self.filteredArray[indexPath.row]


        } else {

            searchingArrays = self.searchingArray[indexPath.row]

        }

        cell.updateUI(symptomNames: searchingArrays)

        return cell

    } else {

        return UITableViewCell()
    }


}

  func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {

    let selectedRow: Symptoms!

    let symptomName: String!

    let cell : UITableViewCell = tableView.cellForRow(at: indexPath)!

    if searchingUnderWay {

        selectedRow = filteredArray[indexPath.row]
        symptomName = filteredArray[indexPath.row].name as String

        if clicked.contains(symptomName) {

            cell.accessoryType = .none

            let indexNumber = clicked.index(of: symptomName)
            clicked.remove(at: indexNumber!)

            if let element = selectedSymptoms.index(where: { $0.name == selectedRow.name }) {

                selectedSymptoms.remove(at: element)
            }

        } else {

            clicked.append(symptomName)

            cell.accessoryType = .checkmark

            searchingSymptomsTableView.reloadData()

            selectedSymptoms.append(selectedRow)

        }



    } else {

        selectedRow = searchingArray[indexPath.row]
        symptomName = searchingArray[indexPath.row].name as String

        if clicked.contains(symptomName) {

            cell.accessoryType = .none

            let indexNumber = clicked.index(of: symptomName)
            clicked.remove(at: indexNumber!)

            if let element = selectedSymptoms.index(where: { $0.name == selectedRow.name }) {

                selectedSymptoms.remove(at: element)
            }

        } else {

            clicked.append(symptomName)

            cell.accessoryType = .checkmark

            searchingSymptomsTableView.reloadData()

            selectedSymptoms.append(selectedRow)

        }


        print(clicked)
        print(selectedSymptoms)



    }

}

我希望当您删除搜索时，我使用搜索栏搜索的项目仍然处于选中状态。

非常感谢

Answer 1

欢迎使用 TableViewController 逻辑。看起来真的很奇怪，但它工作正常)您需要覆盖 ExtraSymptomCell 中的 prepareForReuse() 方法。并清除您的单元格包含的所有值，包括 accessoryType

override func prepareForReuse() {
    super.prepareForReuse()

    accessoryType = .none
}

在你的 tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath):

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    if let cell = searchingSymptomsTableView.dequeueReusableCell(withIdentifier: "ExtraSymptoms", for: indexPath) as? ExtraSymptomCell {

        let symptomName: String!

        let searchingArrays: Symptoms!

        if searchingUnderWay {

            searchingArrays = self.filteredArray[indexPath.row]
            symptomName = filteredArray[indexPath.row].name as String

        } else {

            searchingArrays = self.searchingArray[indexPath.row]
            symptomName = filteredArray[indexPath.row] as String
        }

        cell.updateUI(symptomNames: searchingArrays)

        if clicked.contains(symptomName)  {
            cell.accessoryType = .checkmark
        } else {
            cell.accessoryType = .none
        }

        return cell

    } else {

        return UITableViewCell()
    }
}