Save the state of checkmarked cell in table view in swift 4.2

example.swift

First of all rather than multiple arrays use a struct for the data source.

And don't use extra arrays or dictionaries to maintain the selection either, this is error-prone and unnecessarily expensive.

Add a boolean member to the struct for the selected state.

struct Course : Codable {
    let name : String
    let image : String
    var isSelected : Bool
}



Declare the data source array

var courses = [Course(name: "Sound", image: "speaker", isSelected: false),
               Course(name: "Vibrate", image: "Group 1094", isSelected: false),
               Course(name: "Both", image: "Group 1093", isSelected: false),
               Course(name: "None", image: "speaker-1", isSelected: false)]





First of all rather than multiple arrays use a struct for the data source.

And don't use extra arrays or dictionaries to maintain the selection either, this is error-prone and unnecessarily expensive.

Add a boolean member to the struct for the selected state.

struct Course : Codable {
    let name : String
    let image : String
    var isSelected : Bool
}
Declare the data source array

var courses = [Course(name: "Sound", image: "speaker", isSelected: false),
               Course(name: "Vibrate", image: "Group 1094", isSelected: false),
               Course(name: "Both", image: "Group 1093", isSelected: false),
               Course(name: "None", image: "speaker-1", isSelected: false)]
In cellForRowAt set the checkmark depending on isSelected

func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
    let cell = tableView.dequeueReusableCell(withIdentifier: "cell", for: indexPath) as! VibTableViewCell
    let course = courses[indexPath.row]
    cell.label.text = course.name
    // define the text color in Interface Builder
    // cell.label.textColor = UIColor.darkGray
    cell.photo.image = UIImage(named: course.image)
    cell.accessoryType = course.isSelected ? .checkmark : .none

    return cell
}



In didSelectRowAt toggle the isSelected value in the data source and reload the row

func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
    courses[indexPath.row].isSelected.toggle()
    tableView.reloadRows(at: indexPath, with: .none)
}
Finally delete the method didDeselectRowAt

To save the array you could write

do {
    let data = try JSONEncoder().encode(courses)
    UserDefaults.standard.set(data, forKey: "Courses")
} ca