How to delete a row in UITableView manually?

Question

Here's what I've come up with:

NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:1]; // my table view has 2 sections
[tableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationTop];

Everytime I build and run, it throws the following exception:

Invalid update: invalid number of rows in section 0. The number of rows contained in an existing section after the update must be equal to the number of rows contained in that section before the update, plus or minus the number of rows added or removed from that section.

It's a bit confusing. The section is set to 1, yet the exception says it's 0.

Solution 1

I figured it out.

In addition to the aforementioned code, I also need to make changes to the datasource

[items removeObjectAtIndex:0];

Solution 2

- (IBAction)deleteCustomCellWithUIButton:(id)sender
{
  NSLog(@"Message From Custom Cell Received");
  NSIndexPath *indexPath = [self.myTableView indexPathForCell:(UITableViewCell *)[[[sender superview] superview] superview]];
  NSUInteger row = [indexPath row];
  [self.myDataArray removeObjectAtIndex:row];
  [self.myTableView deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath]  withRowAnimation:UITableViewRowAnimationFade];
}

Comments

[oberbaum]

loved your line NSIndexPath *indexPath = [NSIndexPath indexPathForRow:0 inSection:1];. +1 for you ;)

[Sean]

For anyone who had been receiving the error, like I was, stated in the OP; please be sure to alter your data model before altering the UITableView's contents.

[thedp]

I recommend adding [self.myTableView beginUpdates]; before you start changing. And [self.myTableView endUpdates]; once you're done.