Question

I have a UITableView with draggable rows and I can add/remove items. The datasource is a NSMutableArray.

Now, if I move the row with “Add new functionality” the app crashes because the dataSource is smaller since such row has not been added yet.

So I’ve modified this code:

- (BOOL)tableView:(UITableView *)tableView canMoveRowAtIndexPath:(NSIndexPath *)indexPath {
        if (indexPath.row >= [dataList count]) return NO;
        return YES;
    }

And now I can’t move it anymore. However I can still move the other rows after such row and consequently the code crashes.

How can I solve this ? Is there a way to disable the dragging “to” specific rows and not only from ?

thanks

Answer 1

This is exactly what the UITableViewDelegate method

-tableView:targetIndexPathForMoveFromRowAtIndexPath:toProposedIndexPath:

is for. Will it suit your purposes? Here’s the documentation.