搜索栏仅返回数据数组中的第一个元素

Question

目前我正在尝试实现我的搜索栏，但出了点问题，我无法弄清楚它是什么。这是代码和解释。

//global variable for empty array, its type of Any cause I am getting data from network call
var filteredData: [Any]!
//these are my models, which I am using to display them on screen after mapping in network function
var bookedTrips: [BookedTripsForView]?

func viewDidLoad() {
        super.viewDidLoad()
        filteredData = bookedTrips
}

func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
        searchBar.becomeFirstResponder()
        filteredData = []
        if searchText == "" {
            filteredData = bookedTrips
        }else {
            for trip in (bookedTrips)! {
                if trip.tripName.lowercased().contains(searchText.lowercased()){
                    filteredData.append(trip)
                  //if I type, lets say Barcelona, in console its printed correct result, 
                  //but its displaying only first trip in my array, which is Berlin
                    print("filteredDataArray after appending print: \(String(describing: filteredData))")
                }
            }
        }
        self.tableView.reloadData()
    }

我希望我的解释没问题，如果有什么不清楚的地方，我会重构我的问题。提前致谢。

Here is picture of my screen and console

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
            if let filter = filteredData {
                return filter.count
            } else if let data = bookedTrips {
                return data.count
            }
            return 0
}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: Cells.tripInfo) as! TripsListDetailCell
    
    if let trips = bookedTrips?[indexPath.row] {
        cell.configure(trips: trips)
    }
    return cell
}

Answer 1

像这样为可读代码创建页面情绪枚举：

enum PageMood {
    
    case normal
    case search
}

并创建变量

var pageMode: PageMood = .normal

设置正常为第一个 first if search 并将 pageMode 更改为这样搜索：

func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
    searchBar.becomeFirstResponder()
    if searchText == "" {
        pageMode = .normal
    }else {
        pageMode = .search
        filteredData = bookedTrips?.filter({ item -> Bool in
            return (item.tripName?.lowercased().contains(searchText.lowercased()) ?? false)
        })
    }
    
    self.tableView.reloadData()
}

像这样更改定义数据源：

var bookedTrips: [BookedTripsForView]?
var filteredData: [BookedTripsForView]?

并在里面设置 numberOfItem:

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
    if pageMode == .search {
        return filteredData.count ?? 0
    } else {
        return bookedTrips.count ?? 0
    }
}

if only one item find，也许你的数据只有一项与搜索文本相似。

Answer 2

 var isSearching: Bool = false // As global variable
 var bookedTrips: [BookedTripsForView]? = []
 var filteredData: [BookedTripsForView]? = []

 
 func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
    searchBar.becomeFirstResponder()
    filteredData = []
    if searchText == "" {
        isSearching = false
    }else {
        isSearching = true
        filteredData = bookedTrips.filter { (trip) -> Bool in
            if trip.tripName.lowercased().contains(searchText.lowercased()){
                return true
            } 
            return false
    }

        
    }
    self.tableView.reloadData()
}

//表格视图委托

  func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {

        if isSearching {
            return self.filteredData.count
        }
        return bookedTrips.count

}

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
   let cell = tableView.dequeueReusableCell(withIdentifier: Cells.tripInfo) as! TripsListDetailCell

  if isSearching {
      cell.configure(trips: filteredData[indexPath.row])
  }
  else {
     cell.configure(trips: bookedTrips[indexPath.row])

  }
  return cell

}

Answer 3

现在，因为我将变量更改为：

var filteredData = [BookedTripsForView]()
var bookedTrips = [BookedTripsForView]()

我的部分还有一个问题，在里面添加评论

    func tableView(_ tableView: UITableView, viewForHeaderInSection section: Int) -> UIView? {
    let cell = tableView.dequeueReusableHeaderFooterView(withIdentifier: Cells.sectionTitle) as! TripsListHeaderCell
    
    if isSearching {
        cell.configure(trips: filteredData[section])
    }
    else {
        cell.configure(trips: bookedTrips[section])
    }
    return cell
}

我应该如何实现函数viewForHeaderInSection？作为对每次旅行的回应，我得到了旅行的状态（当前、即将到来、之前）。我想按状态对它们进行排序。如果我把它放在 viewForHeaderInSection 中：

if isSearching { 
  cell.configure(trips: filteredData[section])
} else { 
  cell.configure(trips:bookedTrips[section])
} 
return cell

我在 bookedTrips[section] 上得到索引超出范围如果我评论该行，它会一直工作直到我在搜索栏中出错，假设我输入 Bars 而不是 Barcelona，它会在 filteredData[section] 索引上抛出错误超出范围

在我的回复中，每个行程都有行程状态属性，其类型为字符串，我什至可以按属性对它们进行排序吗？

Answer 4

简短（单行过滤器）

var filteredData = [BookedTripsForView]()
var bookedTrips = [BookedTripsForView]()

override func viewDidLoad() {
    super.viewDidLoad()
    bookedTrips = fetchFromAPIorDB()
    filteredData = bookedTrips
}

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

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: Cells.tripInfo) as! TripsListDetailCell
    cell.configure(trips: filteredData[indexPath.row])
    return cell
}

func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
    if searchText.isEmpty {
        filteredData = bookedTrips
    }
    else {
        filteredData = bookedTrips.filter({ [=10=].tripName.lowercased().contains(searchText.lowercased()) })
    }
    self.tableView.reloadData()
}

搜索栏仅返回数据数组中的第一个元素

Search bar returning only first element from data array

xcode

uisearchbar

ios

swift