How to set Header View of UItableview To stick at the top in iOS

//To stick the header to the Table view

-(void)scrollViewDidScroll:(UIScrollView *)scrollView

{

    CGFloat sectionHeaderHeight = 50;

    if (scrollView.contentOffset.y<=sectionHeaderHeight&&scrollView.contentOffset.y>=0)

    {

        scrollView.contentInset = UIEdgeInsetsMake(-scrollView.contentOffset.y, 0, 0, 0);

    } else if (scrollView.contentOffset.y>=sectionHeaderHeight)

    {

        scrollView.contentInset = UIEdgeInsetsMake(-sectionHeaderHeight, 0, 0, 0);

    }

}