ios - Swift UITableview Custom Cell with multiple section array and row data array Search 实现

Question

在我的场景中，我正在尝试创建具有多个部分和单元格的 UITableview 自定义单元格。在这里，我想添加两个复选标记和 search 选项，我尝试使用下面的代码但两者都不起作用。

在我的代码下面。如何解决这个问题？

class  CustomCell: UITableViewCell {

    @IBOutlet weak var NameLabel: UILabel!
    @IBOutlet weak var CountLabel: UILabel!

    override func setSelected(_ selected: Bool, animated: Bool) {
        super.setSelected(selected, animated: animated)
        self.accessoryType = selected ? .checkmark : .none
    }
}


class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, UISearchControllerDelegate, UISearchResultsUpdating, UISearchBarDelegate {

    var searchController : UISearchController!
    let sectionData = ["1", "2"]
    let rowNames = [["A", "B", "C"], ["D", "E", "F"]]
    var filteredData: [[String]]!
    let cellReuseIdentifier = "cell"
    @IBOutlet var tableView: UITableView!


override func viewDidLoad() {
        super.viewDidLoad()
        filteredData = rowNames
}


//MARK: List Tableview
    func numberOfSections(in tableView: UITableView) -> Int {
        return sectionData.count
    }

    func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
        return sectionData[section]
    }

    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return filteredData[section].count
    }

    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell:CustomCell = self.tableView.dequeueReusableCell(withIdentifier: cellReuseIdentifier) as! CustomCell
        cell.NameLabel.text = filteredData[indexPath.section][indexPath.row]
        return cell
    }

    func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
        self.tableView.deselectRow(at: indexPath, animated: true)
    }

//MARK: Search Delegate

func updateSearchResults(for searchController: UISearchController) {
        if let searchText = searchController.searchBar.text {
            filteredData = searchText.isEmpty ? rowNames : rowNames.filter({(dataString: String) -> Bool in
                return dataString.range(of: searchText, options: .caseInsensitive) != nil
            })
            Self.tableView.reloadData()
        }
    }
}

Answer 1

我会推荐一些像这样的改变

class ViewController: UIViewController, UITableViewDelegate, UITableViewDataSource, UISearchControllerDelegate, UISearchResultsUpdating, UISearchBarDelegate {

var searchController : UISearchController!
var rowNames = [[(value: "A",selected: false),(value: "B",selected: false),(value:"C",selected:false)],[(value: "D",selected: false),(value: "E",selected:false),(value:"F",selected:false)]]
var filteredData: [[(value:String,selected:Bool)]]!
let cellReuseIdentifier = "cell"
@IBOutlet var tableView: UITableView!


override func viewDidLoad() {
    super.viewDidLoad()
    //filteredData = rowNames
}


//MARK: List Tableview
func numberOfSections(in tableView: UITableView) -> Int {
    return rowNames.count
}

func tableView(_ tableView: UITableView, titleForHeaderInSection section: Int) -> String? {
    return (section + 1).description
}

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    if searchController.searchBar.text != nil && searchController.searchBar.text != ""{
        return filteredData.count
    }else{
        return rowNames[section].count
    }
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell:CustomCell = self.tableView.dequeueReusableCell(withIdentifier: cellReuseIdentifier) as! CustomCell
    if searchController.searchBar.text != nil && searchController.searchBar.text != ""{
         cell.NameLabel.text = filteredData[indexPath.section][indexPath.row].value
    }else{
        cell.NameLabel.text =  rowNames[indexPath.section][indexPath.row].value
    }

    return cell
}

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    let cell = tableView.cellForRow(at: indexPath)
    if searchController.searchBar.text == nil || searchController.searchBar.text == ""{
        if rowNames[indexPath.section][indexPath.row].selected == true{
            cell?.accessoryType = .none
            rowNames[indexPath.section][indexPath.row].selected = false
        }else{
            cell?.accessoryType = .checkmark
            rowNames[indexPath.section][indexPath.row].selected = true
        }
    }

    //self.tableView.deselectRow(at: indexPath, animated: true)
}

//MARK: Search Delegate

func updateSearchResults(for searchController: UISearchController) {
    if let searchText = searchController.searchBar.text, searchController.searchBar.text != "" {
        })
      filteredData =  rowNames.map({row in
            row.filter({
                $0.value.contains(searchText)
            }).map({$0})
        })
        self.tableView.reloadData()
    }
}

}由于您在所选单元格上设置复选标记，因此您必须在数据源中跟踪它的状态。所以这就是为什么如果你使用一个结构，模型会变成一个元组，你可以在你的

didSelectRow 函数，您必须跟踪模型的状态以显示或不显示复选标记。搜索不值得搜索，因为没有搜索文本，因此应用不应重新加载 tableView。