Getting TableViewCell Index is nil on dropdown item selection - ios

Question

I want tableviewcell index on dropdown item selection. But the index is nil when I am clicking on dropdown item. Is there any way to get index on dropdown item selection? If anyone have any better solution give me some idea.
let EditDropDown = DropDown()
lazy var dropDowns: [DropDown] = {
return [
self.EditDropDown
]
}()
This is my function which I am using for DropDown List.
func setupGenderDropDown() {
let cellHeader = tableview.dequeueReusableCell(withIdentifier: "CellRIDHeader") as! SPOccupationCell
EditDropDown.anchorView = cellHeader.btnDots
EditDropDown.bottomOffset = CGPoint(x: 0, y: 40)
// You can also use localizationKeysDataSource instead. Check the docs.
EditDropDown.dataSource = [
"Edit",
"Make Default",
"Delete"
]
// Action triggered on selection
EditDropDown.selectionAction = { [weak self] (index, item) in
cellHeader.btnDots.setTitle(item, for: .normal)
if item == "Edit"
{
// I am Getting Cell Index but index is nil
let cell = self!.tableview.dequeueReusableCell(withIdentifier: "CellRIDHeader") as! SPOccupationCell
let indexPath = self!.tableview.indexPath(for: cell)
print(indexPath as Any)
let occupation_id = self!.arrayOccupation[(indexPath?.row)!].occupation_Main_id
print(occupation_id)
let next = self!.storyboard?.instantiateViewController(withIdentifier: "EditOccupationVCSID") as! EditOccupationVC
self!.navigationController?.pushViewController(next, animated: false)
next.occupationId = occupation_id
}
else if item == "Make Default"
{
print("B")
}
else if item == "Delete"
{
print("c")
}
}
}

Answer 1

I am assuming you are using DropDown library to show dropdown. There is a problem where you are getting cell when it is tapped so I have created a demo project (simple tableView and not with custom UITableViewCell) for you and I have added comment to explain the changes. Consider below code:
import UIKit
import DropDown
class ViewController: UIViewController {
#IBOutlet weak var tableView: UITableView!
var items: [String] = ["We", "Heart", "Swift"]
let editDropDown = DropDown() //Object name should start with small letter
override func viewDidLoad() {
super.viewDidLoad()
self.tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")
}
func setupGenderDropDown(cell: UITableViewCell) { //Pass your cell with argument and change type to your custom cell
//By changing cell argument with your custom cell you will get your button for anchor
editDropDown.anchorView = cell.textLabel
editDropDown.bottomOffset = CGPoint(x: 0, y: 40)
editDropDown.dataSource = [
"Edit",
"Make Default",
"Delete"
]
//Here you need to update selectionAction from their library page
editDropDown.selectionAction = { [unowned self] (index: Int, item: String) in
//Here you will get selected item and index
print("Selected item: \(item) at index: \(index)")
if item == "Edit"
{
print(item)
print(index)
}
else if item == "Make Default"
{
print("B")
}
else if item == "Delete"
{
print("c")
}
}
//This was missing in your code
editDropDown.show()
}
}
extension ViewController: UITableViewDataSource, UITableViewDelegate {
func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
return self.items.count
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = self.tableView.dequeueReusableCell(withIdentifier: "cell") as! UITableViewCell
cell.textLabel?.text = self.items[indexPath.row]
return cell
}
func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {
//Get the selected cell this way
guard let indexPath = tableView.indexPathForSelectedRow else { return }
guard let currentCell = tableView.cellForRow(at: indexPath) else { return }
//Pass your selected cell to setupGenderDropDown method
setupGenderDropDown(cell: currentCell)
}
}
HERE you can check demo project. And it's created into Xcode 10.1