清除搜索结果后未保存Swift Tableview搜索结果单元格选择复选标记

时间:2019-11-13 07:17:24

标签: ios swift uitableview searchbar

在一种情况下,我将借助JSONcodable数据列出到Tableview中。在这里,我有一个Tableview和带有过滤器数组的searchBar。同样,使用checkmark选项实现了tableview多单元格选择。在这里,无需搜索所选单元格复选标记persistant即可正常工作,但如果我搜索特定数据并选择单元格,则复选标记会显示,但清除搜索结果(fileterarray to tableviewarray)后,复选标记不会显示(这表示所选单元格复选标记未显示持续存在,并且在清除搜索结果后未显示)。在某个地方,我在代码库中犯了错误。请更正并提供可靠的解决方案。

需要实际操作和发布,以允许用户通过启用和不启用搜索的选中标记来选择其单元格。没有搜索,一切工作正常,但是通过搜索,选定的支票无法持久保存...

JSON可编码

// MARK: - TeamListRoot
struct TeamListRoot: Codable {
    let status: Bool
    let data: [TeamListData]
}

// MARK: - TeamListData
struct TeamListData: Codable, Hashable {
    let userid: String?
    let firstname, designation: String?
    let profileimage: String?
    var isSelected = false

    private enum CodingKeys : String, CodingKey {
        case userid, firstname, designation, profileimage
    }
}

我的Tableview和SearchBar集合

@IBOutlet weak var searchbar: UISearchBar!
@IBOutlet var tableView: UITableView!
var searching = false
var membersData = [TeamListData]()
var filteredData = [TeamListData]()

我的Tableview代表

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    return searching ? filteredData.count : membersData.count
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
       let cell:TeamlistCustomCell = self.tableView.dequeueReusableCell(withIdentifier: cellReuseIdentifier) as! TeamlistCustomCell
       let textForRow = searching ? filteredData[indexPath.row] : membersData[indexPath.row]
       cell.empName.text = textForRow.firstname
       cell.designationLabel.text = textForRow.designation
       cell.accessoryType = textForRow.isSelected ? .checkmark : .none
       return cell
}

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
       self.tableView.deselectRow(at: indexPath, animated: true)
       if  searching == false {
           membersData[indexPath.row].isSelected.toggle()
       } else {
           filteredData[indexPath.row].isSelected.toggle()
       }
       tableView.reloadRows(at: [indexPath], with: .none)
       let selectedAreas = membersData.filter{$0.isSelected}
}

SearchBar代表

func searchBarTextDidBeginEditing(_ searchBar: UISearchBar) {
      self.searchbar.setShowsCancelButton(true, animated: true)
      searching = true
}

func searchBarTextDidEndEditing(_ searchBar: UISearchBar) {
      self.searchbar.setShowsCancelButton(false, animated: true)
      searching = false
}

func searchBarSearchButtonClicked(_ searchBar: UISearchBar) {
      searching = false
      self.searchbar.resignFirstResponder()
      self.searchbar.text = ""
      filteredData.removeAll()
      self.tableView.reloadData()
}

func searchBarCancelButtonClicked(_ searchBar: UISearchBar) {
       searching = false
       self.searchbar.resignFirstResponder()
       self.searchbar.text = ""
       filteredData.removeAll()
       self.tableView.reloadData()
}

func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
       if !searchText.isEmpty {
           filteredData = membersData.filter({ ($0.firstname?.localizedCaseInsensitiveContains(searchText))! })
           searching = true
        } else {
            filteredData.removeAll()
            searching = false
        }
        tableView.reloadData()
}

3 个答案:

答案 0 :(得分:0)

正在搜索时,您可以从filteredData中进行选择。 完成后,您将从membersData加载项目。在membersData中,您没有选择行

更改此内容:

 if  searching == false {
           membersData[indexPath.row].isSelected.toggle()
       } else {
           filteredData[indexPath.row].isSelected.toggle()
       }

对此:

      membersData[indexPath.row].isSelected.toggle()
       filteredData[indexPath.row].isSelected.toggle()

答案 1 :(得分:0)

快速5

//替换您的 Array 声明

var membersData: [TeamListData] = [TeamListData]()
var filteredData: [TeamListData] = [TeamListData]() 

//替换 didSelectRowAt 代码

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

    self.tblSearch.deselectRow(at: indexPath, animated: true)

    if  searching == false {

        if let row = self.membersData.firstIndex(where: { $0.userid == membersData[indexPath.row].userid }) {

            membersData[row].isSelected.toggle()
        }
    } else {

        if let row = self.membersData.firstIndex(where: { $0.userid == filteredData[indexPath.row].userid }) {

           membersData[row].isSelected.toggle()
        }

        if let row = self.filteredData.firstIndex(where: { $0.userid == filteredData[indexPath.row].userid }) {

            filteredData[row].isSelected.toggle()
        }
    }

    tableView.reloadRows(at: [indexPath], with: .none)
}

答案 2 :(得分:0)

我的解决方案是在WillDisplay单元格中重新加载tableView之后设置选择。

    func tableView(_ tableView: UITableView, willDisplay cell: UITableViewCell, forRowAt indexPath: IndexPath) {
    let contact = contactsFiltered[indexPath.row]
    if selectedContacts.contains(contact) {
        tableView.selectRow(at: indexPath, animated: false, scrollPosition: .none)
    } else {
        tableView.deselectRow(at: indexPath, animated: false)
    }
    }

我只需要保持通讯录过滤为最新状态

    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        let contactToAppend = contactsFiltered[indexPath.row]
        selectedContacts.append(contactToAppend)
}

    func tableView(_ tableView: UITableView, didDeselectRowAt indexPath: IndexPath) {
        if let contactCell = tableView.cellForRow(at: indexPath) as? ContactTVCell {
            if let contactToDelete = contactCell.contact {
                selectedContacts.removeAll(where: { $0 == contactToDelete})
            }
        }
    }