UISearchController過濾斯威夫特

Question

我有一個UITableViewCell與3子視圖，我想過濾的時候我搜索，如下所示：

1.圖像視圖 2.名稱標籤（黑色文本） 3.街道名稱標籤（藍色文本）

這是我迄今所做的，我只設法瞭解如何篩選1個陣列的名稱是：

MainTableView.swift

var FilteredNames = [String] 

    func updateSearchResultsForSearchController(searchController:UISearchController) { 

      // Filter Names 
      self.filteredNames = self.names.filter { (name:String) -> Bool in 
       if name.lowercaseString.containsString(self.searchController.searchBar.text!.lowercaseString){ 
        return true 
       } else { 
        return false 
       } 
      } 
      self.resultsController.tableView.reloadData() 
     } 
     override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat { 
      return 100.5 
     } 

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

      // Search 
      if tableView == self.tableView { 
       self.streets.count 
       return self.names.count 
      } else { 
       self.filteredStreets.count 
      return self.filteredNames.count 
      }    
      // return names.count 
      } 

     override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell{ 

      let cell = self.tableView.dequeueReusableCellWithIdentifier("CustomCell", forIndexPath: indexPath) as! CustomCell 

      if tableView == self.tableView { 
       cell.photo.image = self.images[indexPath.row] 
       cell.name.text = names[indexPath.row] 
       cell.streetName.text = streets[indexPath.row] 
      } else { 
       cell.photo.image = self.images[indexPath.row] 
       cell.name.text = self.filteredNames[indexPath.row] 
       cell.streetName.text = self.streets[indexPath.row] 
      } 
      return cell 
     } 

至於現在，當我搜索，圖像視圖&街道標籤不與名稱保持同步。我想過濾所有3個子視圖以正確同步。我怎樣才能做到這一點？

我明白我需要使用結構，並用一個物體過濾所有3，但心中已經遇到了一些困難，管理要做到這一點任何幫助將不勝感激謝謝！

編輯：這裏是我的代碼現在：

override func viewDidLoad() { 
      super.viewDidLoad() 

    var searchController : UISearchController! 

    var resultsController = UITableViewController() 

    // // 
     definesPresentationContext = true 
     self.resultsController.tableView.dataSource = self 
     self.resultsController.tableView.delegate = self 
     self.searchController = UISearchController(searchResultsController: self.resultsController) 
     self.tableView.tableHeaderView = self.searchController.searchBar 
     self.searchController.searchResultsUpdater = self 
     self.searchController.dimsBackgroundDuringPresentation = true 
     self.searchController.searchBar.sizeToFit() 
     self.searchController.searchBar.barTintColor = UIColor.blackColor() 
     self.searchController.searchBar.endEditing(true) 
     self.searchController.searchBar.placeholder = "חפש ברים" 



     allUsers = createUsers(names: names, streets: streets, images: images) 

      filteredUsers = allUsers 

      } 

     var allUsers: [User]! 
     var filteredUsers: [User]! 

     func createUsers(names names: [String], streets: [String], images: [UIImage?]) -> [User] { 
      var users = [User]() 
      guard names.count == streets.count && names.count == images.count else { return users } 
      for (index, name) in names.enumerate() { 
       let user = User(name: name, streetName: streets[index], image: images[index]) 
       users.append(user) 
      } 
      return users 
     } 




     //MARK : Search ! 
     func updateSearchResultsForSearchController(searchController:UISearchController) { 
      if let searchText = searchController.searchBar.text?.lowercaseString { 
       if searchText.characters.count == 0 { 
        filteredUsers = allUsers 
       } 
       else { 
        filteredUsers = allUsers.filter { 
         return $0.name.lowercaseString.containsString(searchText) || 
          $0.streetName.lowercaseString.containsString(searchText) 
        } 
       } 
      } 
      self.resultsController.tableView.reloadData() 
     } 

     override func tableView(tableView: UITableView, heightForRowAtIndexPath indexPath: NSIndexPath) -> CGFloat 
     { 
      return 100.5; 
     } 

     override func didReceiveMemoryWarning() { 
      super.didReceiveMemoryWarning() 
      //////// 

        //////// 
     } 

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

     override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell{ 
      let cell = self.tableView.dequeueReusableCellWithIdentifier("CustomCell", forIndexPath: indexPath) as! CustomCell 
      let user = filteredUsers[indexPath.row] 
      cell.photo.image = user.image 
      cell.name.text = user.name 
      cell.streetName.text = user.streetName 
      return cell 
     } 

Answer 1

我會強烈建議有名稱，街道名稱和圖像只有一個dataSource，而不是單獨的陣列。在以下代碼中filteredUsers始終用作數據源，而allUsers只是一個存儲的完整數組，每次在搜索欄中輸入新文本時用於更新filteredUsers。

創建一個模型：

struct User { 
    var name: String 
    var streetName: String 
    var image: UIImage? 
} 

的ViewController：

var allUsers: [User]! 
var filteredUsers: [User]! 

override func viewDidLoad() { 
    super.viewDidLoad() 

    //assuming you already have three arrays with the same amount of elements in each: 
    allUsers = createUsers(names: names, streets: streets, images: images) 

    filteredUsers = allUsers 
} 

func createUsers(names names: [String], streets: [String], images: [UIImage?]) -> [User] { 
    var users = [User]() 
    guard names.count == streets.count && names.count == images.count else { return users } 
    for (index, name) in names.enumerate() { 
     let user = User(name: name, streetName: streets[index], image: images[index]) 
     users.append(user) 
    } 
    return users 
} 

func updateSearchResultsForSearchController(searchController:UISearchController) { 
    if let searchText = searchController.searchBar.text?.lowercaseString { 
     if searchText.characters.count == 0 { 
      filteredUsers = allUsers 
     } 
     else { 
      filteredUsers = allUsers.filter { 
       return $0.name.lowercaseString.containsString(searchText) || 
         $0.streetName.lowercaseString.containsString(searchText) 
      } ?? [] 
     }    
    } 
    self.resultsController.tableView.reloadData() 
} 


override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int { 
    return filteredUsers ? filteredUsers.count : 0 
} 

override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell{ 
    let cell = self.tableView.dequeueReusableCellWithIdentifier("CustomCell", forIndexPath: indexPath) as! CustomCell 
    let user = filteredUsers[indexPath.row] 
    cell.photo.image = user.image 
    cell.name.text = user.name 
    cell.streetName.text = user.streetName 
    return cell 
}