Question

我是swift的新手。我想在表格视图中为描述字段实现json show的搜索操作。

StatusText

这是我从json

获取数据的类

<Window x:Class="WpfApp1.MainWindow"
        xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
        xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
        Height="200" Width="400" 
        WindowStartupLocation="CenterScreen" 
        ResizeMode="CanMinimize" Topmost="True">
    <Window.Resources>

    </Window.Resources>
    <Grid >
        <Grid.RowDefinitions>
            <RowDefinition Height="*" />
            <RowDefinition Height="AUTO" />
            <RowDefinition Height="AUTO" />
            <RowDefinition Height="AUTO" />
            <RowDefinition Height="AUTO" />
            <RowDefinition Height="*" />
        </Grid.RowDefinitions>
        <TextBlock Text="Please wait ..." Grid.Row="1" Margin="6"/>

        <TextBlock Name="tbkStatus" Grid.Row="2" Margin="6" TextWrapping="Wrap" Text="{Binding StatusText}"/>

        <ProgressBar Grid.Row="3" Margin="6" Height="20"/>
        <Button Grid.Row="4" HorizontalAlignment="Center" Padding="24,3" Margin="6" Content="Stop"/>
    </Grid>
</Window>

这是关于表视图中描述字段的搜索过滤器功能

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

        let cell = tableView.dequeueReusableCell(withIdentifier: "discoveryNewscell") as! DiscoveryNewsTableViewCell


       classObject.getDataForTableView(results: results, index: indexPath.row)
        //let image_url = filteredsneakernews[indexPath.row].image
       // cell.sneakerImageView.image=filteredsneakernews[indexPath.row].image

        cell.newsTitle.text = classObject.descriptionn

        let imageURLPathString = newsurl + classObject.image

        let url1 = URL(string: imageURLPathString)
        print("xyz", url1)
        let data = try? Data(contentsOf: url1!)

        if let imageData = data {
            let image = UIImage(data: imageData)
            cell.sneakerImageView.image = image
        }

        return cell


    }

如何在表视图中实现json描述字段的搜索操作。您可以从此链接下载项目。https://drive.google.com/file/d/1HGQVN3QWFSQf1BcV-3Iv-pXOoWozcP1G/view?usp=sharing

Answer 1

在cellForRowAtindex中填充dict的结果数组... 过滤后，你需要检查结果数组中的数据，但是你正在检查获取数据对象..

filteredsneakernews = [classObject.descriptionn] .filter {$ 0.description.lowercased（）。contains（searchController.searchBar.text！.lowercased（））}而不是检查结果数组上的数据检查

results = results.filter {$ 0.description.lowercased（）。contains（searchController.searchBar.text！.lowercased（））}

像这样

Answer 2

如果您正在关注方法搜索结果，则显示tableview

class Model:NSObject {

var name1:String = ""
var size1:String = ""
var colour1:String = ""
var store1:String = ""



init (name:String, size:String, colour:String, store:String)
{

    self.name1 = name
    self.size1 = size
    self.colour1 = colour
    self.store1 = store


}


class func generatedModelArray () -> [Model] {

        var modelArray = [Model]()
        modelArray.append(Model(name: "Name0", size: "size0", colour: "colour0", store: "store0"))
        modelArray.append(Model(name: "name1", size: "size1", colour: "colour1", store: "store1"))
        modelArray.append(Model(name: "name2", size: "size2", colour: "colour2", store: "store2"))
        modelArray.append(Model(name: "name3", size: "size3", colour: "colour3", store: "store3"))

        return modelArray

    }

// Outlet连接和声明

 @IBOutlet weak var tableview: UITableView!
 var list = [Model]()
 var filterdArry = [Model]()

 var serachController = UISearchController()
 var resultController = UITableViewController()


//search
let searchController = UISearchController(searchResultsController: nil)

// viewDidLoad方法

       searchController.dimsBackgroundDuringPresentation = false
    definesPresentationContext = true



    serachController = UISearchController(searchResultsController: resultController)
      tableview.tableHeaderView = searchController.searchBar
       searchController.searchResultsUpdater = self

      resultController.tableView.delegate = self
      resultController.tableView.dataSource = self




    let elm = Model(name: "Name0", size: "size0", colour: "colour0", store: "store0")
    list.append(elm)

    let elm1 = Model(name: "name1", size: "size1", colour: "colour1", store: "store1")
    list.append(elm1)

    let elm2 = Model(name: "name2", size: "size2", colour: "colour2", store: "store2")
    list.append(elm2)

    let elm3 = Model(name: "name3", size: "size3", colour: "colour3", store: "store3")
    list.append(elm3)

    filterdArry = list
    tableview.delegate = self
      tableview.dataSource = self
      tableview.register(UINib(nibName: "DetaisTableTableViewCell", bundle: nil), forCellReuseIdentifier: "detailsCell")
      self.view.addSubview(tableview)
      tableview.reloadData()

//搜索功能

   func updateSearchResults(for searchController: UISearchController) {
   filterdArry = list.filter({(mod) -> Bool in
    print("mod.name1\(mod.name1)")
    return mod.name1.lowercased().contains((searchController.searchBar.text)!.lowercased())

    })
     tableview.reloadData()
}

// Tableview方法

func tableView（_ tableView：UITableView，numberOfRowsInSection section：Int） - ＆gt; Int {

     if tableView == resultController.tableView  {
        return filterdArry.count
    } else {
        return list.count
    }


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


    let cell = self.tableview.dequeueReusableCell(withIdentifier: "detailsCell") as! DetaisTableTableViewCell

    if tableView == resultController.tableView  {
        let model = filterdArry[indexPath.row]
         cell.label1.text = model.name1
    cell.label2.text = model.size1
    cell.label3.text = model.colour1
    cell.label4.text = model.store1
    } else {
       let model = list[indexPath.row]
    cell.label1.text = model.name1
    cell.label2.text = model.size1
    cell.label3.text = model.colour1
    cell.label4.text = model.store1
    }
   return cell
}


  func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    print("You tapped cell number \(indexPath.row).")

   }

如何实现表视图中显示的json的搜索操作

2 个答案: