我在iOS UITableView中有NSInvalidArgumentException

Question

the error is:

2013-04-02 14:46:07.180 ECom[7855:c07] -[UITableViewController setItemRow:]: unrecognized selector sent to instance 0x768c770
2013-04-02 14:46:07.180 ECom[7855:c07] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[UITableViewController setItemRow:]: unrecognized selector sent to instance 0x768c770'

In the method int the last line of the code:

- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender
{
    if([segue.identifier isEqualToString:@"clPanelSegue"])
    {
        NSIndexPath *path = [self.tableView indexPathForSelectedRow];
        ECOMClPanelDetailViewController *detail = (ECOMClPanelDetailViewController*)segue.destinationViewController;
        NSLog(@"clPanelSeguePathRow = %d", path.row);
        [detail setItemRow:path.row];
    }
}

And the method in the last line is

-(void)setItemRow:(int)aItemRow
{
    clDetailItemRow = aItemRow;
}

Can't understand what's wrong. Who can help?

Answer 1

First, it appears that your detail panel isn't what you think it is. Based on the error message, the seque.destinationViewController is of class UITableViewController , not ECOMClPanelDetailViewController . That's what you need to track down first.

Second, because of this, when you send your setItemView: message, it can't be interpreted and raises the exception.

Begin by looking at where the `destinationViewController is instantiated (maybe your XIB file) and make sure that you have the right classes set.

Answer 2

the detail is not a ECOMClPanelDetailViewController, but pointing to a UITableViewController. You can check the segue's identifier in your storyboard to make sure you didn't make a mistake in the identifier name.