Selecting TableView Cell Activates Checkmark in Rows in Multiple Sections - ios

Question

I've implemented checkmarks (when row is selected) with the following code in cellForRowAt:
// Add a checkmark to row when selected
if selectedIngredients.contains(indexPath.row) {
cell.accessoryType = .checkmark
} else {
cell.accessoryType = .none
}
However, when I select a row, that index.row from each section gets the checkmark:
This seems like it could be because I'm only specifying the indexPath.row, but not the section. How can I code this so that only the selected row within the section I selected gets the checkmark?

Answer 1

use data store for save checkmarks like this:
var selectedIngredients: Set<IndexPath> = [] // use set for unique save
then didSelect callBack:
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath){
if self.selectedIngredients.contains(indexPath) {
self.selectedIngredients.remove(indexPath)
} else {
self.selectedIngredients.insert(indexPath)
}
self.tableView.reloadData()
}
after reload in CellForRow:
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if selectedIngredients.contains(indexPath) {
cell.accessoryType = .checkmark
} else {
cell.accessoryType = .none
}
}
If you want it to have only one Row contain checkmark:
var selectedIngredients: IndexPath? = nil
and didSelect CallBack:
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath){
self.selectedIngredients = indexPath
}
and finally:
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
if selectedIngredients == indexPath {
cell.accessoryType = .checkmark
} else {
cell.accessoryType = .none
}
}

Answer 2

you should add checkmarks in didSelect and remove them in didDeselect methods;
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath){
// update cell here
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
// update cell here
}
also, have a look at this answer; https://stackoverflow.com/a/34962963/13754736