Question

I am trying to implement a method to clear the NSTableView of all items AND columns. But I get a crash when I try to implement the following:

- (void)clearResultData
{
    [resultArray removeAllObjects];
    NSArray *tableCols = [resultTableView tableColumns];
    if ([tableCols count] > 0)
    {
        id object;
        NSEnumerator *e = [tableCols objectEnumerator];
        while (object = [e nextObject])
        {
            NSTableColumn *col = (NSTableColumn*)object;
            [resultTableView removeTableColumn:col];
        }
    }
    [resultTableView reloadData];
}

Answer 1

Well, if it’s any help you can remove all the columns like this:

- (void)removeAllColumns
{
    while([[tableView tableColumns] count] > 0) {
        [tableView removeTableColumn:[[tableView tableColumns] lastObject]];
    }
}