SearchBar with Custom Class - ios

Question

I am a beginner on iOS Development and I have an issue when I try to use the UISearchBar in a UITableView.
I do not know how to use the custom class in a table view which is filtering the data with a search bar. Please, would you fix the issue? Below is the custom class:
// Data.swift
// SearchBarWithTableView
class Food {
var FoodName:String = ""
var FoodQuantity:String = ""
var FoodGroup:String = ""
var FoodImage:String = ""
var FoodCarbs:Int = 0
var FoodCalories:Int = 0
init(foodName:String,foodGroup:String,foodQuantity:String,foodImage:String,foodCarbs:Int,foodCalories:Int) {
self.FoodName = foodName
self.FoodQuantity = foodQuantity
self.FoodGroup = foodGroup
self.FoodImage = foodImage
self.FoodCarbs = foodCarbs
self.FoodCalories = foodCalories
}}
ViewController.swift
import UIKit
class ViewController: UIViewController,UITableViewDelegate,UITableViewDataSource,UISearchBarDelegate{
#IBOutlet weak var SearchBarTableView:UITableView!
#IBOutlet weak var SearchBar:UISearchBar!
var searchActive:Bool=false
var filteredData=[Food]()
let allData:[Food]=[Food(foodName: "Rice", foodGroup: "Beans", foodQuantity: "5 scope",foodImage:"1S.jpg", foodCarbs:15,foodCalories: 80),
Food(foodName: "Apple", foodGroup: "Frutie", foodQuantity: "One",foodImage:"S-2.jpg", foodCarbs: 15, foodCalories: 80),
Food(foodName: "ban 1",foodGroup: "Beans",foodQuantity:"One",foodImage:"3S.jpg",foodCarbs: 15,foodCalories: 80),
Food(foodName: "ban 2", foodGroup: "Beans", foodQuantity: "half pieace",foodImage:"4-S.jpg", foodCarbs: 25, foodCalories: 140)]
override func viewDidLoad() {
super.viewDidLoad()
SearchBarTableView.delegate=self
SearchBarTableView.dataSource=self
SearchBar.delegate=self
filteredData=allData
print(filteredData.count)
print("-----------")
print(allData.count)
SearchBar.returnKeyType=UIReturnKeyType.done
definesPresentationContext=true
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell=tableView.dequeueReusableCell(withIdentifier: "cell")
var Text:String
if searchActive {
Text=filteredData[indexPath.row].FoodName
}else{
Text=allData[indexPath.row].FoodName
}
cell?.textLabel?.text=filteredData[indexPath.row].FoodName
return cell!
}
func searchBar(_ searchBar: UISearchBar, textDidChange `searchText: String) {`
if SearchBar.text == nil || SearchBar.text == "" {
searchActive=false
view.endEditing(true)
SearchBarTableView.reloadData()
}else{
searchActive=true
/* here is the problem */
// filteredData=allData.filter({$0 === searchBar.text!})
}
}
func numberOfSections(in tableView: UITableView) -> Int {
return 1
}
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
if searchActive {
return filteredData.count
}
return allData.count
}
override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
if segue.identifier=="Go"{
if let indexPath=SearchBarTableView.indexPathForSelectedRow{
let destinationVC=segue.destination as! DetailsViewController
destinationVC.namE=allData[indexPath.row].FoodName
destinationVC.quntitY=allData[indexPath.row].FoodQuantity
destinationVC.calorieS=allData[indexPath.row].FoodCalories
destinationVC.carbS=allData[indexPath.row].FoodCarbs
}
}
}
}

Answer 1

func searchBar(_ searchBar: UISearchBar, textDidChange `searchText: String) {`
if SearchBar.text == nil || SearchBar.text == "" {
searchActive=false
view.endEditing(true)
SearchBarTableView.reloadData()
}else{
searchActive=true
filteredData=allData.filter({$0.FoodName === searchBar.text!})
SearchBarTableView.reloadData()
}
}

Answer 2

func updateSearchResults(for searchController: UISearchController) {
if let searchText = searchController.searchBar.text, !searchText.isEmpty {
self.filteredData = self.allData.filter{
var found = false
for str in ($0 as! NSDictionary) {
if(str.key as! String == "foodName")
{
var strin = str.value as! String;
strin = strin.lowercased();
let search = searchText.lowercased()
found = strin.contains(search);
}
}
return found
}
}
else {
self.Array = response as! [Any]
}
tableView.reloadData()
}
Use above method.