populating tableview with multiple sections from only one NSMutableArray

Question

This here is the last update. It is crashing when setting texts in indexpath.section ==0 and ==1 and ==2 with the error

[Home objectAtIndex:]: unrecognized selector sent to instance 0x109624f20 2014-07-30 12:03:24.732 TYM-APP[1704:60b] * Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '-[Home objectAtIndex:]: unrecognized selector sent to instance 0x109624f20'

 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath     *)indexPath
{
NSLog(@"wsolna hon");
static NSString *cellIdentifier = @"HomeTableViewCell";
HomeTableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellIdentifier forIndexPath:indexPath];

// Configure the cell...
int row= [indexPath row];


                if (indexPath.section == 0){
                     homeObject = [homeArray[0] objectAtIndex:indexPath.row];

                         NSAttributedString * attrStr = [[NSAttributedString alloc] initWithData:[homeObject.News dataUsingEncoding:NSUnicodeStringEncoding] options:@{ NSDocumentTypeDocumentAttribute: NSHTMLTextDocumentType } documentAttributes:nil error:nil];
                    cell.NewsDateLabel.text= homeObject.News_Date;
                    cell.NewsLabel.attributedText= attrStr;
                    NSLog(@"news: %@", attrStr);

                }


                if (indexPath.section == 1){
                    homeObject = [homeArray[1] objectAtIndex:indexPath.row];

                  NSLog(@"value of indexpath for library: %d",row);
                         NSLog(@"library: %@",homeObject.News);
                    cell.NewsLabel.text= homeObject.Library_text;
                    cell.TestimonialNameLabel.text= @"";

            }

                if (indexPath.section == 2){
                    homeObject = [homeArray[2] objectAtIndex:indexPath.row];

                         NSLog(@"news: %@",homeObject.Testimonial_Description);
                    cell.NewsLabel.text= homeObject.Library_text;
                    cell.TestimonialNameLabel.text = homeObject.Testimonial_Name;

            }


return cell;
}

Answer 1

If the quantity of sections is fixed, I would recommend you to store your data in multidimensional array. Thus it will protect you from the most of logical mistakes later.

// Declaring array for 3 sections
homeArray = [[NSMutableArray alloc] initWithObjects:[[NSMutableArray alloc] init], [[NSMutableArray alloc] init], [[NSMutableArray alloc] init], nil];

Then perform necessary logical separation during retrieving data and placing it into array

UPDATE: As @Wain said, it's not recommended to do any requests inside cellForRowAtIndexPath:, so it will be better to place next snippet in that place where you are caching your information

if ([moduleID isEqualToString:@"77"]){
    [homeArray[0] addObject:[[Home alloc]initWithItemID: modID andNewsName:nText andNewsDate: (NSString *) nDate andLibraryText: dText andTestDescription: tText andTestimonialName: (NSString *) tName]];
} else if ([moduleID isEqualToString:@"81"]){
    [homeArray[1] addObject:[[Home alloc]initWithItemID: modID andNewsName:nText andNewsDate: (NSString *) nDate andLibraryText: dText andTestDescription: tText andTestimonialName: (NSString *) tName]];
} else if ([moduleID isEqualToString:@"78"]){
    [homeArray[2] addObject:[[Home alloc]initWithItemID: modID andNewsName:nText andNewsDate: (NSString *) nDate andLibraryText: dText andTestDescription: tText andTestimonialName: (NSString *) tName]];
}

And, finally, get necessary homeObject for your table this way

if (indexPath.section == 0) {
    homeObject = [homeArray[0] objectAtIndex:indexPath.row];
} else if (indexPath.section == 1) {
    homeObject = [homeArray[1] objectAtIndex:indexPath.row];
} else if (indexPath.section == 2) {
    homeObject = [homeArray[2] objectAtIndex:indexPath.row];
}