How to set table section title from any Array object in iPhone. - ios

Question

I have tableView, which I am getting data from array and also the number of section and section title also from array, but when I give section title from array it breaks the App.
Getting values in array:
NSArray *tempArray =[[DataController staticVersion] startParsing:#"http://www.celeritas-solutions.com/pah_brd_v1/productivo/getCategory.php"];
for (int i = 0; i<[tempArray count]; i++) {
id *item = [tempArray objectAtIndex:i];
NSDictionary *dict = (NSDictionary *) item;
ObjectData *theObject =[[ObjectData alloc] init];
[theObject setCategoryID:[dict objectForKey:#"CategoryID"]];
[theObject setCategoryTitle:[dict objectForKey:#"CategoryTitle"]];
[theObject setCategoryDescription:[dict objectForKey:#"CategoryDescription"]];
[theObject setCategoryAddedByUserID:[dict objectForKey:#"CategoryAddedByUserID"]];
[theObject setCategoryAddedDateTime:[dict objectForKey:#"CategoryAddedDateTime"]];
[categoryArray addObject:theObject];
[theObject release];
theObject=nil;
}
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
return [categoryArray count] ;
}
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
[categoryArray objectAtIndex:section];
}

Answer 1

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
expect a string in return.
Try
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
ObjectData *theObject =[categoryArray objectAtIndex:section];
return theObject.categoryTitle;
}

Answer 2

try like this ,
- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection(NSInteger)section
{
return [[categoryArray objectAtIndex:section] valueForKey:#"title"];//replace title with your key value
}

Answer 3

You are adding an instance of ObjectData class into the categoryArray. The tableView:titleForHeaderInSection:method asks for an NSString object to set it as the header of the section. Check what you are returning in the titleForHeaderInSection: method. It has to be an NSString object.If you want to set the category title as your section header title, return the categoryTitle as
return [(ObjectData*)[categoryArray objectAtIndex:section] categoryTitle];