viewForHeaderInSection: not called when reloadData: is called

I made a `UITableView` and set the "delegate" and "datasource" and every time I call `reloadData`, it goes into the method: ``` - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return [self.headersList count]; } ``` And the method: ``` -(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { SectionInfo *headerInfo = (self.headerInfoArray)[section]; NSInteger numOfObjectsInSection = [[headerInfo.list objectsInList] count]; return headerInfo.open ? numOfObjectsInSection : 0; } ``` And then stops! it doesn't go into the `ViewForHeaderInSection:` method. I have also implemented the method: ``` -(CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section { return SECTION_HEADER_HEIGHT; } ``` - Knowing that I use the open/close section feature! so at first all the sections are closed and the number of rows in each one is 0 but the number of sections returned is correct (when a section is opened the number of rows is updated). - The only way for it to show the header views is to wait for some time until it's automatically reloaded! or I swipe up or down! The `viewForHeaderInSection` method: ``` -(UIView *)tableView:(UITableView *)tableView viewForHeaderInSection:(NSInteger)section { UISectionHeaderView *sectionHeaderView = [[UISectionHeaderView alloc] initWithFrame:CGRectMake(0, 0, tableView.frame.size.width, SECTION_HEADER_HEIGHT)]; SectionInfo *sectionInfo = (self.headerInfoArray)[section]; sectionHeaderView.open = sectionInfo.open; sectionInfo.headerView = sectionHeaderView; sectionHeaderView.titleLabel.text = [NSString stringWithFormat:@"%@ (%lu)",sectionInfo.list.title, (unsigned long)[sectionInfo.list.objectsInList count]]; sectionHeaderView.section = section; sectionHeaderView.delegate = self; return sectionHeaderView; } ```