Delete is not working in case of UITableview - ios

Question

MyTableviewController
var animalNameArray = ["cat","dog","lion"]
override func viewDidLoad() {
super.viewDidLoad()
tableview.delegate = self
tableview.dataSource = self
self.cancelButton.isEnabled = false
}
#IBAction func editButtonAtNavigationBar(_ sender: UIBarButtonItem) {
self.cancelButton.isEnabled = true
self.tableview.isEditing = !self.tableview.isEditing
sender.title = (self.tableview.isEditing) ? "Done" : "Edit"
}
func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
if editingStyle == .delete {
animalNameArray.remove(at: indexPath.row)
tableView.deleteRows(at: [indexPath], with: .fade)
} else if editingStyle == .insert {
// Create a new instance of the appropriate class, insert it into the array, and add a new row to the table view.
}
}
func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {
let remove = UITableViewRowAction(style: .default, title: " ") { action, indexPath in
}
remove.backgroundColor = UIColor(patternImage: UIImage(named: "delete")!)
return [remove]
}
//conditional Rearranging the table view cells
func tableView(_ tableView: UITableView, canMoveRowAt indexPath: IndexPath) -> Bool {
return true
}
}
I want to put the image (trash) instead of text, image is showing but the delete action is not happening when trying to delete the row. I don't know what I am doing wrong. How can I delete my tableview row? Can someone please help me? Thanks in advance.

Answer 1

You should remove the cell at the indexPath that is passed in editActionsForRowAt like this:
func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {
let remove = UITableViewRowAction(style: .default, title: " ") { action, indexPath in
tableView.beginUpdates()
tableView.deleteRows(at: [IndexPath(row: index, section: 0)], with: .left)
tableView.endUpdates()
}
remove.backgroundColor = UIColor(patternImage: UIImage(named: "delete")!)
return [remove]
}
It will delete the row but it won't be consistent with the data inside the array. You can also delete item from the array at the specific index and then call tableView.reloadData()

Answer 2

Once you delete row from tableview you need to reload rows
func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {
let remove = UITableViewRowAction(style: .default, title: " ") { action, indexPath in
tableView.deleteRows(at: [IndexPath(row: index, section: 0)], with: .left)
self.tableView.reloadRows(at: [IndexPath], with: .fade)
}
remove.backgroundColor = UIColor(patternImage: UIImage(named: "delete")!)
return [remove]
}