xcdoe Delegate

IAPhelper.h

@protocol IAPhelperDelegate;

@interface IAPhelper : NSObject  
{
   id  delegate;
}
@property (nonatomic, strong) id  delegate;
@end

@protocol IAPhelperDelegate

- (void) IAP_TableViewReloadData:(IAPhelper *)IAP_flag;

@end

IAPhelper.m

@synthesize delegate;
- (void)whereYouWantAction
{
  testArray = [[NSMutableArray alloc]init];
 [testArray addObject:product.localizedTitle];
 [delegate IAP_ProdctInfo_load:self];
}

IAPhelper.m

#pragma mark -
#pragma mark custom Delegate methods

- (void) IAP_TableViewReloadData:(IAPhelper *)IAP_flag;
{
   testArray = IAP_flag.testArray;  
   [mainTableView reloadData]; 
}