getting the wrong index when I search something on the searcher - ios

Question

This is an example to explain a problem that I’m having.
I have 3 elements in an array. the index of the array matches each sentences. Like
The 0 index matches “hello” (0 index)
The 1 index matches “nice” (1 index)
The 2 index matches “how are you?” (2 index)
I’ve put UISearchBar in my tableView. When I type “h” in the searchBar, “hello” and “how are you” show up perfectly, but the thing is, when I touch “how are you” which is 2 index on the tableview list, it shows “nice” on the next viewController (I have two viewControllers and the variable called myIndex use the index on the next viewController ) because the variable gets 1 index not 2 index. How should I solve this?
The full code is as follows :
import UIKit
class tableviewtest: UIViewController, UITableViewDelegate, UITableViewDataSource {
#IBOutlet weak var searchBar: UISearchBar!
func tableView(_ tableView: UITableView,
moveRowAt sourceIndexPath: IndexPath,
to destinationIndexPath: IndexPath) {
}
var searchArr = [String]()
var searching = false
var copiedArray:[String] = eng // eng is the original array that has the full elements from another view controller.
let cellIdentifier = "xxx"
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell:UITableViewCell = self.tableview.dequeueReusableCell(withIdentifier: cellIdentifier, for:indexPath)
if searching {
cell.textLabel?.text = searchArr[indexPath.row]
}
else {
cell.textLabel?.text = copiedArray[indexPath.row]
}
return cell
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if searching {
return searchArr.count
}
else {
return copiedArray.count
}
}
func tableView(_ tableview: UITableView, didSelectRowAt indexPath: IndexPath) {
myIndex = indexPath.row
performSegue(withIdentifier: "segue1", sender: self)
}
#IBOutlet weak var tableview: UITableView!
override func viewDidLoad() {
super.viewDidLoad()
tableview.delegate = self
tableview.dataSource = self
self.tableview.register(UITableViewCell.self,forCellReuseIdentifier: cellIdentifier)
}
}
extension tableviewtest: UISearchBarDelegate {
func searchBar (_ searchBar:UISearchBar, textDidChange searchText: String) {
searchArr = copiedArray.filter({$0.prefix(searchText.count) == searchText})
searching = true
tableview.reloadData()
}
}

Answer 1

At the moment you get the string from the array you have to consider the searching state
let selectedItem = searching ? searchArr[myIndex] : filteredArr[myIndex]
and you have to reset searching if the search string is empty
func searchBar (_ searchBar:UISearchBar, textDidChange searchText: String) {
if searchText.isEmpty {
searching = false
searchArr.removeAll()
} else {
searchArr = filteredArr.filter({$0.prefix(searchText.count) == searchText})
searching = true
}
tableview.reloadData()
}
You could even pass the string as sender parameter in performSegue and hand it over to the next view controller in prepare(for segue
func tableView(_ tableview: UITableView, didSelectRowAt indexPath: IndexPath) {
let selectedItem = searching ? searchArr[indexPath.row] : filteredArr[indexPath.row]
performSegue(withIdentifier: "segue1", sender: selectedItem)
}
Side note:
Reconsider your naming of the variables: Why is the data source array once called filteredArr and then numberOfRows, and why is the non-filtered array called filteredArr anyway?