Checkmark's associated with wrong row in TableView when using SearchBar - swift

Question

I am creating an application where when a User searches for an item in the TableView they can click on it and a checkmark appears next to it. However, say when I select the first item I have searched for and click it then delete my search the checkmark stays on the first row but for a completely different object, I searched for, to begin with (see images below).
When Searching
When not Searching
var searchingArray = [Symptoms]()
var filteredArray = [Symptoms]()
var selectedSymptoms = [Symptoms]()
var clicked = [String]()
var searchingUnderWay = false
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if let cell = searchingSymptomsTableView.dequeueReusableCell(withIdentifier: "ExtraSymptoms", for: indexPath) as? ExtraSymptomCell {
let searchingArrays: Symptoms!
if searchingUnderWay {
searchingArrays = self.filteredArray[indexPath.row]
} else {
searchingArrays = self.searchingArray[indexPath.row]
}
cell.updateUI(symptomNames: searchingArrays)
return cell
} else {
return UITableViewCell()
}
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
let selectedRow: Symptoms!
let symptomName: String!
let cell : UITableViewCell = tableView.cellForRow(at: indexPath)!
if searchingUnderWay {
selectedRow = filteredArray[indexPath.row]
symptomName = filteredArray[indexPath.row].name as String
if clicked.contains(symptomName) {
cell.accessoryType = .none
let indexNumber = clicked.index(of: symptomName)
clicked.remove(at: indexNumber!)
if let element = selectedSymptoms.index(where: { $0.name == selectedRow.name }) {
selectedSymptoms.remove(at: element)
}
} else {
clicked.append(symptomName)
cell.accessoryType = .checkmark
searchingSymptomsTableView.reloadData()
selectedSymptoms.append(selectedRow)
}
} else {
selectedRow = searchingArray[indexPath.row]
symptomName = searchingArray[indexPath.row].name as String
if clicked.contains(symptomName) {
cell.accessoryType = .none
let indexNumber = clicked.index(of: symptomName)
clicked.remove(at: indexNumber!)
if let element = selectedSymptoms.index(where: { $0.name == selectedRow.name }) {
selectedSymptoms.remove(at: element)
}
} else {
clicked.append(symptomName)
cell.accessoryType = .checkmark
searchingSymptomsTableView.reloadData()
selectedSymptoms.append(selectedRow)
}
print(clicked)
print(selectedSymptoms)
}
}
I wish for the item I searched using the searchbar to still be checked when you delete the search.
Many thanks

Answer 1

Welcome to TableViewController logic. It seems really strange, but it works correct)
You need to override prepareForReuse() method in your ExtraSymptomCell. And clear all the values your cell contains including accessoryType
override func prepareForReuse() {
super.prepareForReuse()
accessoryType = .none
}
In your tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath):
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if let cell = searchingSymptomsTableView.dequeueReusableCell(withIdentifier: "ExtraSymptoms", for: indexPath) as? ExtraSymptomCell {
let symptomName: String!
let searchingArrays: Symptoms!
if searchingUnderWay {
searchingArrays = self.filteredArray[indexPath.row]
symptomName = filteredArray[indexPath.row].name as String
} else {
searchingArrays = self.searchingArray[indexPath.row]
symptomName = filteredArray[indexPath.row] as String
}
cell.updateUI(symptomNames: searchingArrays)
if clicked.contains(symptomName) {
cell.accessoryType = .checkmark
} else {
cell.accessoryType = .none
}
return cell
} else {
return UITableViewCell()
}
}

Answer 2

Since UITableViewCell are reused, the checkmark will appear in a cell when you reload Table Data.
In cellForRowAt set the accessoryType to .none, to remove a previously checked cell checkmark:
let cell : UITableViewCell = tableView.cellForRow(at: indexPath)!
cell.accessoryType = .none
This will remove the check from the previous search.