控制段中的UISearchBar

Question

我有一个搜索栏，可用于搜索控件段（所有商店）中的任何项目。并控制段过滤商店。

所以：

搜索所有商店

细分市场是过滤商店

以下是我保存所选索引的方法

s.valueChange = { index in
            switch index {
            case 0 :
                self.selectedIndex = 0
                self.tableView.reloadData()
            case 1 :
                self.selectedIndex = 1
                self.tableView.reloadData()
            case 2 :
                self.selectedIndex = 2
                self.tableView.reloadData()
            case 3 :
                self.selectedIndex = 3
                self.tableView.reloadData()
            default:
                self.selectedIndex = 0
                self.tableView.reloadData()
            }

这是

部分的行数

func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        if searchActive {
            return auxiliar.count
        } else {

        switch selectedIndex {
        case 0:
            return  allShops.count
        case 1:
            return self.coffee.count
        case 2:
            return self.restuarnt.count
        case 3:
            return self.pharmacy.count

        default:
            return   allShops.count
        }

        }
    }

func tableView（_ tableView：UITableView，cellForRowAt indexPath：IndexPath） - ＆gt; UITableViewCell {

    if searchActive

    {
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! ShopTableViewCell
        let entry1 = auxiliar[indexPath.row]
        cell.shopName.text = entry1.shopname

        return cell
    } else {
    switch selectedIndex {
    case 0:
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! ShopTableViewCell
        let entry = shops[indexPath.row]
        cell.shopName.text = entry.shopname

        return cell

    case 1 :
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! ShopTableViewCell
        let entry = coffee[indexPath.row]
        cell.shopName.text = entry.shopname
        return cell

    case 2 :
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! ShopTableViewCell
        let entry = restuarnt[indexPath.row]
        cell.shopName.text = entry.shopname
        return cell

    case 3 :
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! ShopTableViewCell
        let entry = pharmacy[indexPath.row]
        cell.shopName.text = entry.shopname
        return cell

    default:
        let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath) as! ShopTableViewCell
        let entry = shops[indexPath.row]
        cell.shopName.text = entry.shopname
        return cell
    }
    }
}

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

        if searchActive {


            guard (auxiliar.count) > indexPath.row else {
                print("Index out of range")
                return
            }
            let meal1 = auxiliar[indexPath.row]
            let storyboard = UIStoryboard(name: "Main", bundle: nil)
            var viewController = storyboard.instantiateViewController(withIdentifier: "viewControllerIdentifer") as! MealsDetailsController
            viewController.passedValue = (meal1.familiy_id)
            viewController.name = (meal1.shopname)
            print("\(meal1.familiy_id) im the search ")
            view.animateRandom()
            self.present(viewController, animated: true , completion: nil)

        } else {
        switch selectedIndex {
        case 0  :
            let meal1 =  shops[indexPath.row]
            guard (shops.count) > indexPath.row else {
                print("Index out of range")
                return
            }
            let storyboard = UIStoryboard(name: "Main", bundle: nil)
            var viewController = storyboard.instantiateViewController(withIdentifier: "viewControllerIdentifer") as! MealsDetailsController
            viewController.passedValue = (meal1.familiy_id)
            viewController.name = (meal1.shopname)
            print("\(meal1.familiy_id) im the search ")
            view.animateRandom()
            self.present(viewController, animated: true , completion: nil)

        case 1 :
            let meal1 =  coffee[indexPath.row]

            guard (coffee.count) > indexPath.row else {
                print("Index out of range")
                return
            }

... the rest of the cases 

最后是textDidChange

func searchBar(_ searchBar: UISearchBar, textDidChange searchText: String) {
        auxiliar = shops.filter { $0.shopname.range(of: searchText, options: .caseInsensitive, range: nil, locale: nil) != nil}
        if searchText == "" || searchBar.text == nil {
            auxiliar = shops
        }
        tableView.reloadData()
    }


  func searchBarTextDidBeginEditing(_ searchBar: UISearchBar)
    {
        self.searchActive = true
    }

    func searchBarTextDidEndEditing(_ searchBar: UISearchBar)
    {
        self.searchActive = true
    }

    func searchBarCancelButtonClicked(_ searchBar: UISearchBar)
    {
        self.searchActive = false
    }

    func searchBarSearchButtonClicked(_ searchBar: UISearchBar)
    {
        self.searchActive = false
    }

    func searchBarBookmarkButtonClicked(_ searchBar: UISearchBar) {
        self.searchActive = false

    }

问题

当我搜索商店时，结果在所有细分中都很好。但当我结束搜索并更改片段后，搜索后的所有片段都有段0（selectedIndex = 0）的行，并且再也不会更改

当我点击搜索栏内的X按钮时，应用程序崩溃

我想要的是什么：

在结束搜索和搜索栏为“”或nill之后，我想点击任何细分，并显示属于该细分的商店。