CODEWITHSUNDEEP
iosswiftuitableview
Jamakes
Jamakes

Reputation: 21

Deleting row (or array item) permanently - swift 3/4

After successfully deleting a row from UITableView, I go to another view controller but when I return to the UITableView the deleted row is back again. Am I missing something? I am relatively new to Swift.

Here is the code:

func tableView(_ tableView: UITableView, editActionsForRowAt indexPath: IndexPath) -> [UITableViewRowAction]? {
    let delete = UITableViewRowAction(style: .destructive, title: "Delete") { (action, indexPath) in
        self.queuelayout.remove(at: indexPath.row)
        tableView.deleteRows(at: [indexPath], with: .fade)
        print(self.queuelayout)
    }
    return [delete]
}

I've also tried with this code:

func tableView(_ tableView: UITableView, commit editingStyle: UITableViewCellEditingStyle, forRowAt indexPath: IndexPath) {
    if editingStyle == .delete{
        queuelayout.remove(at: indexPath.row)
        tableView.deleteRows(at: [indexPath], with: .right)
    }
}

Look forward to your help.

Upvotes: 1

Views: 251

Answers (1)

E.Coms
E.Coms

Reputation: 11531

I checked your top codes. They are all right. The only possible reason is as you said you went to another VC , you have already get rid of your tableViewController from the memory. Here is an simple example: enter image description here

If your tableView is the most right one, and when you go back to middle vc, your right one will be removed from the memory. Then when you click assign button and actually, you are loading a completely new tableViewController.

As a result, viewDidLoad will be called and your tableViewController will init again to the original states.

You may set a breakpoint at func viewDidLoad(), to check this situation. If this one is not called when you go back, you are good to go. Otherwise, everything will be reset. All what you delete will reappear as they should.

This is a simple example. Your case may be a little complicated. But if your tableviewcontroller called ViewDidLoad(), you must have some hassles somewhere.

Hope this help you out.

Upvotes: 1

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