Allow UITableView to reorder, but not delete in edit mode, and enable swipe to delete anyway

Question

I have a UITableView (iOS 9) I have implemented two actions with swipe (one is delete) I have an Edit button to enable edit mode (to reorder the rows)

For that, I implemented

    override func setEditing(editing: Bool, animated: Bool) {

    super.setEditing(editing, animated:animated)

    if (!isInSwipeDeleteMode) {
        if (self.tableView.editing) {
            metAJourPersonnes()
            tableView.reloadData()
        }
        else {
            tableView.reloadData()
        }
    }
}

    override func tableView(tableView: UITableView, canMoveRowAtIndexPath indexPath: NSIndexPath) -> Bool {

    if (indexPath.row < personnes.count) {
        return true
    } else {
        return false
    }
}

override func tableView(tableView: UITableView, moveRowAtIndexPath sourceIndexPath: NSIndexPath, toIndexPath destinationIndexPath: NSIndexPath) {
    let pers = personnes[sourceIndexPath.row]
    personnes.removeAtIndex(sourceIndexPath.row)
    if (destinationIndexPath.row < personnes.count)
    {
        personnes.insert(pers, atIndex: destinationIndexPath.row)
    } else {
        personnes.append(pers)
    }
    tableView.reloadData()
}

override func tableView(tableView: UITableView, editingStyleForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCellEditingStyle {
    if (indexPath.row < personnes.count) {
        return .Delete
    } else {
        return .None
    }
}

override func tableView(tableView: UITableView, editActionsForRowAtIndexPath indexPath: NSIndexPath) -> [UITableViewRowAction]? {
    let deleteClosure = { (action: UITableViewRowAction!, indexPath: NSIndexPath!) -> Void in
        print("Delete closure called")
        self.tableView(tableView, commitEditingStyle: .Delete, forRowAtIndexPath: indexPath)
    }

    let modifyClosure = { (action: UITableViewRowAction!, indexPath: NSIndexPath!) -> Void in
        print("More closure called")            
        self.performSegueWithIdentifier("modifPersonne", sender: indexPath)
    }

    let deleteAction = UITableViewRowAction(style: .Default, title: "Supprimer", handler: deleteClosure)
    let modifyAction = UITableViewRowAction(style: .Normal, title: "Modifier", handler: modifyClosure)   
    return [deleteAction, modifyAction]

}

override func tableView(tableView: UITableView, commitEditingStyle editingStyle: UITableViewCellEditingStyle, forRowAtIndexPath indexPath: NSIndexPath) {
    switch editingStyle {

    case .Delete:
        // Delete in the coreData base         
        personnes.removeAtIndex(indexPath.row)
        tableView.deleteRowsAtIndexPaths([indexPath], withRowAnimation: .Fade)

    default:    break
    }
}

Everything is working fine, but I want the edit mode just working for reordering. I don't want the red minus sign to appear, but I want to keep the swipe actions.

Is this possible? It seems that disabling delete in edit mode does disable the swipe to delete gesture.

Answer 1

I believe the only thing you need to change in your code is the editingStyleForRowAtIndexPath function. You only return .Delete if the table view is not in editing mode.

This way swipe-to-delete still works (not in editing mode), and when you do switch to editing mode, the row can't be deleted.