為來自API的資料設定tableView單元的UISearchController

我真的很難為我的 tableView 實作 UISearchController，我按照 Sean Allen 的視頻解釋并像他一樣做了，但我想問題出在我身上，我想不通。

我希望當用戶想要在他打字時搜索要實時更新的單元格時，他將搜索的主要內容是cell.veturaOutlet.text = currentVechicle.Plate

如果你有時間請幫忙，因為我是 Swift 的新手，我真的很享受這些小問題，這些小問題在一開始就出現在每個人身上

這是細胞的樣子！

class MonitorimiViewController: UIViewController {


@IBOutlet weak var monitorimiTableView: UITableView!
@IBOutlet weak var loaderMonitorimi: UIActivityIndicatorView!


var listOfVechicle: [Vehicles] = []
var filteredVehicles: [Vehicles] = []
var listOfVehicles = [Vehicles]()    


override func viewDidLoad() {
    super.viewDidLoad()
    fetchAndReloadData()
    configureSearchController()
    
    loaderMonitorimi.hidesWhenStopped = true
    loaderMonitorimi.startAnimating()
    
    Timer.scheduledTimer(withTimeInterval: 5, repeats: false) { [self] _ in
        monitorimiTableView.reloadData()
        configureTableView()
        loaderMonitorimi.stopAnimating()
    }
}


func configureTableView() {
    monitorimiTableView.delegate = self
    monitorimiTableView.dataSource = self
    monitorimiTableView.rowHeight = 225
}

func configureSearchController() {
    let searchController = UISearchController()
    searchController.searchResultsUpdater = self
    searchController.searchBar.delegate = self
    searchController.searchBar.placeholder = "Search"
    navigationItem.searchController = searchController
}


func fetchAndReloadData(){
    APICaller.shared.getVehicles(for: APICaller.shared.id!) {[weak self] (result) in
        guard let self = self else { return }
        
        switch result {
        case .success(let vehicle):
            self.listOfVechicle = vehicle
            DispatchQueue.main.async {
                self.monitorimiTableView.reloadData()
            }
        case .failure(let error):
            print(error)
      }
    }
  }
}


    extension MonitorimiViewController: UITableViewDelegate, UITableViewDataSource, UISearchResultsUpdating, UISearchBarDelegate{
func updateSearchResults(for searchController: UISearchController) {
    guard let filter = searchController.searchBar.text, !filter.isEmpty else { return 
    }
    
    filteredVehicles = filteredVehicles.filter { $0.Plate!.lowercased().contains(filter.lowercased()) }
    monitorimiTableView.reloadData()
    }


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


func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    guard let cell = tableView.dequeueReusableCell(withIdentifier: "monitorimiCell", for: indexPath) as? MyCustomCell1 else {return UITableViewCell()}
    let currentVechicle = listOfVechicle[indexPath.row]
    
    
    cell.veturaOutlet.text = currentVechicle.Plate
    cell.shpejtsiaAktualeOutlet.text = currentVechicle.Speed!
    cell.perditsuarOutlet.text = "\(currentVechicle.LastCommunicationDate!.convertToDisplayForm())"
    cell.pasagjereOutlet.text = "\(currentVechicle.Passengers!) Person/a"
    cell.vozitesiOutlet.text = "\(currentVechicle.Driver!)"

    
    return cell
  }
}

uj5u.com熱心網友回復：

你可以使用這個：

var initialListOfVechicles: [Vehicles] = []
var vehicles: [Vehicles] = []

保留一個包含所有資料 ( initialListOfVechicles)，另一個 ( vehicles) 用于操作串列（即過濾）并填充 tableView。

APICaller.shared.getVehicles(for: APICaller.shared.id!) {[weak self] (result) in
    guard let self = self else { return }
        
    switch result {
    case .success(let vehicle):
        self.initialListOfVechicles = vehicle
        self.vehicles = self.initialListOfVechicles
        ...
}



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


func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    guard let cell = tableView.dequeueReusableCell(withIdentifier: "monitorimiCell", for: indexPath) as? MyCustomCell1 else {return UITableViewCell()}
    let currentVechicle = vehicles[indexPath.row]
    ...
}

當你想過濾時：

func updateSearchResults(for searchController: UISearchController) {
    guard let filter = searchController.searchBar.text, !filter.isEmpty else { 
        vehicles = initialListOfVechicles
        monitorimiTableView.reloadData()
        return
    }
    
    vehicles = initialListOfVechicles.filter { $0.Plate!.lowercased().contains(filter.lowercased()) }
    monitorimiTableView.reloadData()
}

旁注：如果is ，
$0.Plate!這將導致崩潰。即，為什么它首先是可選的？ 建議以小寫開頭的變數命名，所以它應該代替. 如果它來自 JSON，您可以使用正確匹配它們（即，用于 key ），并使用.Platenil
platePlateCodingKeysplatePlatekeyDecodingStrategy

標籤：迅速 代码

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