Question

I’m building an app where a user is able to provide different usernames that he/she has. The vision is, the user is able to add and remove UITableViewCell to enter a username.

Right now I have a grouped UITableView and on the right hand side of every UITableViewCell I have a UIButton that adds another cell to the table with a UITextField. After the first cell, every cell has a delete button. I’m trying to make the UIButton delete that row. I have the IBAction that removes the cell, the only problem is, it’s not deleting the proper row.

What is the best way to do what I’m attempting to do? I don’t know how to properly search for this on Google. I’m sure someone has done what I’m trying to do.

Thanks for any help in advance!

Answer 1

Similar to what Derek said above — UITableViewController already provides functionality to delete rows.

To toggle editing a UITableView, do something like: [self.tableView setEditing:!self.tableView.editing animated:YES];

Override tableView:canEditRowAtIndexPath: with something like (since it sounds like you don’t want your first row to be deletable):

- (BOOL)tableView:(UITableView *)tableView canEditRowAtIndexPath:(NSIndexPath *)indexPath {
    if ([indexPath row] == 0) {
            return NO;
    }

    return YES;
}

Also override tableView:commitEditingStyle:

- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle 
forRowAtIndexPath:(NSIndexPath *)indexPath {
    if (editingStyle == UITableViewCellEditingStyleDelete) {
        [self.dataArray removeObjectAtIndex:[indexPath row] - 1];

        // delete the row from the data source
        [tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:YES];
    }   
}

Hope this helps!