Question

Trying to [self.parentViewController.tableView reloadData] from a save: method in my DetailViewController but getting my favorite error: request for member ‘tableView’ in something not a structure or union.

Included the header for my RootViewController and casted the parentViewController as a RootViewController to no avail.

What have I botched?

Answer 1

Try:

[((MyParentViewControllerClassName *)self.parentViewController).tableView beginUpdates];
[((MyParentViewControllerClassName *)self.parentViewController).tableView reloadData];
[((MyParentViewControllerClassName *)self.parentViewController).tableView endUpdates];

replacing MyParentViewControllerClassName with your parent vc’s class name.

To reference the parent view controller, I have always had to do something like this, e.g.:

NSArray *viewControllerArray = [self.navigationController viewControllers];
NSInteger parentViewControllerIndex = [viewControllerArray count] - 2;
[[viewControllerArray objectAtIndex:parentViewControllerIndex] setBackBarButtonItemTitle:@"New Title"];

You could also try, following this example:

[[[viewControllerArray objectAtIndex:parentViewControllerIndex] tableView] beginUpdates];
[[[viewControllerArray objectAtIndex:parentViewControllerIndex] tableView] reloadData];
[[[viewControllerArray objectAtIndex:parentViewControllerIndex] tableView] endUpdates];