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POSorted arrays doesn't delete what I want
 

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    <p>I have a sorted NSMutableArray which works perfectly and all though when I try to delete an object it crashes the app then when I reload the app it didn't delete the right one.</p> <p>I known that is due to the fact that this is now a sorted array because before I implemented this feature it worked fine though I haven't got a clue of how to fix it.</p> <p>Here is the code I use to delete things from the array:</p> <pre><code>- (void) tableView:(UITableView *)tv commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath { if ( editingStyle == UITableViewCellEditingStyleDelete ) { Patient *thisPatient = [patients objectAtIndex:indexPath.row]; [patients removeObjectAtIndex:indexPath.row]; if (patients.count == 0) { [super setEditing:NO animated:YES]; [self.tableView setEditing:NO animated:YES]; } [self deletePatientFromDatabase:thisPatient.patientid]; [tv deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationLeft]; } } </code></pre> <p>It is being stopped at this line:</p> <pre><code>[tv deleteRowsAtIndexPaths:[NSArray arrayWithObject:indexPath] withRowAnimation:UITableViewRowAnimationLeft]; </code></pre> <p>Here is the code that I use for sorting the array:</p> <pre><code>-(void) processForTableView:(NSMutableArray *)items { for (Patient *thisPatient in items) { NSString *firstCharacter = [thisPatient.patientName substringToIndex:1]; if (![charIndex containsObject:firstCharacter]) { [charIndex addObject:firstCharacter]; [charCount setObject:[NSNumber numberWithInt:1] forKey:firstCharacter]; } else { [charCount setObject:[NSNumber numberWithInt:[[charCount objectForKey:firstCharacter] intValue] + 1] forKey:firstCharacter]; } } charIndex = (NSMutableArray *) [charIndex sortedArrayUsingSelector:@selector(localizedCaseInsensitiveCompare:)]; } - (UITableViewCell *)tableView:(UITableView *)tv cellForRowAtIndexPath:(NSIndexPath *)indexPath { UITableViewCell *cell = [tv dequeueReusableCellWithIdentifier:@"cell"]; NSString *letter = [charIndex objectAtIndex:[indexPath section]]; NSPredicate *search = [NSPredicate predicateWithFormat:@"patientName beginswith[cd] %@", letter]; NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"patientName" ascending:YES]; NSArray *filteredArray = [[patients filteredArrayUsingPredicate:search] sortedArrayUsingDescriptors:[NSArray arrayWithObject:sortDescriptor]]; if ( nil == cell ) { cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:@"cell"]; } NSLog(@"indexPath.row = %d, patients.count = %d", indexPath.row, patients.count); Patient *thisPatient = [filteredArray objectAtIndex:[indexPath row]]; cell.textLabel.text = [NSString stringWithFormat:@"%@ %@", thisPatient.patientName, thisPatient.patientSurname]; cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator; cell.textLabel.textColor = [UIColor blackColor]; if (self.editing) { [cell setSelectionStyle:UITableViewCellSelectionStyleNone]; } return cell; } </code></pre> <p>I suspect this is quite a common thing that happens when you sort an array though it may not be.</p> <p>Please say if you want any more code</p>
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