Question

I have a table view and I’m toggling its dataDource with two UIButtons (like tabs).

- (IBAction)dataToggler:(id)sender {
    int buttonTag = ((UIButton*)sender).tag;

    if(_firstTab.selected && buttonTag != 1){

        AppDelegate *myAppDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
        myAppDelegate.isFeatured = TRUE;
        [myAppDelegate loadEvents];

        numberOfSections = 1;

        _firstTab.selected = NO;
        _secondTab.selected = YES;

    } else if(_secondTab.selected && buttonTag != 2){

        AppDelegate *myAppDelegate = (AppDelegate *)[[UIApplication sharedApplication] delegate];
        myAppDelegate.isFeatured = FALSE;
        [myAppDelegate loadEvents];

        numberOfSections = 2;

        _firstTab.selected = YES;
        _secondTab.selected = NO;
    }
    [tableView reloadData];

}

Each time when I click on one of the buttons my xml its parsed and added into separate arrays; the arrays contains a list of events (eg. first section with now events and the 2nd one with the rest of them).

The problem which I have is when I have the 2nd button selected I have two section but sometimes my first section is empty so I don’t want to display that section if its empty; please take a quick look to my code files…

Right now if my second tab (button) is selected I’m getting an empty table…

My code files are: myViewController and myAppDelegate

Answer 1

In your tableView datasource, implement this method:

 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView {
        return 2;
   }


 - (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section {
     if ( [self tableView:tableView numberOfRowsInSection:section] > 0 ) {
         // INSERT YOUR HEADER STRING "times" array here.
         return [NSString stringWithFormat:@"section %d",section];
     } else {
         return nil;
     }
  }