Hide section for UITableView on first load

Question

I have a UITableView with 2 sections (the 1st for the filters and the 2nd for the data).

I want to hide the 1st section when the view is loaded.

The section appears only when I scroll on top.

I tested with scrollToRowAtIndexPath: but the result is not as expected.

Please help. Thanks.

Answer 1

• Take a BOOL variable for checking whether to load one section or two section.
• Make is YES in ViewDidLoad then,for the first time UITableView will load one section.
• Then when UITableView will be scrolled to top,make that BOOL variable to NO

- (void)viewDidLoad
{
    [super viewDidLoad];

    isFirstTime = YES;
}

• In datasource method of TableView

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{

    if (isFirstTime) {
        return 1;
    }
    return 2;
}

• For checking the UITableView to scroll TOP.We will use delegate methods of UIScrollview.UITableView is the subclass of UIScrollView.

-(void)scrollViewDidScroll:(UITableView *)tableView{

  CGFloat content_Offset = tableView.contentOffset.y;

  if (content_Offset >= 0 && isFirstTime){
    //UITableview is scrolled to top
    isFirstTime = NO;
    [self.myTbaleView reloadData];
   }else if (content_Offset<0) {
    //UITableview is draged down
   }

}

Answer 2

You can add a BOOL variable to find out whether it is loading first time or not. Set it true in the viewDidLoad like:

- (void)viewDidLoad
{
    [super viewDidLoad];

    isFirstTimeLoading = YES;

}

Then in your numberOfSectionsInTableView: delegate method,

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    // Return the number of sections.
    if (isFirstTimeLoading)  {
        return 1;
    } else {
        return 2;
    }

}

TableView scrolling to top can be find out using

- (void)tableView:(UITableView *)tableView willDisplayCell:(UITableViewCell *)cell forRowAtIndexPath:(NSIndexPath *)indexPath

In this method, check whether the row is top row. if yes then make isFirstTimeLoading to NO and reload data. Dont forget to change the data also if necessary.