ios - UITableView loading section before particular section -

i trying show calendar uitableview. each section corresponds each year of calendar , every section contains 12 cells correspond 12 months.

i trying show 10 years calendar, 5 years current date , 5 coming years. can load current year(section) 2013 section 0 in uitableview. when scroll table upward want see year 2012 above year 2013. 2013 section 0 cant though can insert new sections after current section simple.

- (id)initwithframe:(cgrect)frame logic:(linekalmonthlogic *)thelogic delegate:(id<linekalviewdelegate>)thedelegate { frame.size.width =  kklinetilesize.width; frame.size.height = 31 *  kklinetilesize.height;  if (self = [super initwithframe:frame]) {     self.clipstobounds = yes;     logic = [thelogic retain];     delegate = thedelegate;      cgrect rect = cgrectmake(0, 0,1024, 716);     _maintable =[[uitableview alloc] initwithframe:rect style:uitableviewstylegrouped];     _maintable.delegate = self;     _maintable.datasource = self;      _maintable.backgroundcolor = [uicolor graycolor];     [self addsubview:_maintable];     monthheight = 723;     backmontharray = [[nsmutablearray alloc] init];     heightarray = [[nsmutablearray alloc] init];     _sectionno = 1; } return self; } -(void)calculatemonths:(int)monthno{  int ; (i=monthno; i<monthno+12; i++) {      cgrect monthrect = cgrectmake(0.f, 0.f, 1024,723);      backmonthview = [[[linekalmonthview alloc] initwithframe:monthrect anddays: [logic numberofdaysinmonth:i] andmonthname:(nsstring *)[logic gettingmonthdate:i]] autorelease];      [delegate showforcurrentmonth];      [backmonthview showdates:logic.daysinselectedmonth         leadingadjacentdates:logic.daysinfinalweekofpreviousmonth        trailingadjacentdates:logic.daysinfirstweekoffollowingmonth];      [backmontharray addobject:backmonthview];     [delegate reloaddata];     monthheight = backmonthview.frame.size.height;     [heightarray addobject:[nsnumber numberwithfloat:monthheight]]; } nextmonthno = i; 

}

- (nsinteger)numberofsectionsintableview:(uitableview *)tableview { return _sectionno;    //count of section }  - (nsinteger)tableview:(uitableview *)tableview numberofrowsinsection:(nsinteger)section {  return 12;  }  - (cgfloat)tableview:(uitableview *)tableview heightforrowatindexpath:(nsindexpath *)indexpath { return [[heightarray objectatindex:indexpath.row+indexpath.section*12] intvalue]; }  - (uitableviewcell *)tableview:(uitableview *)tableview      cellforrowatindexpath:(nsindexpath *)indexpath { static nsstring *myidentifier = @"myidentifier";  uitableviewcell *cell = [tableview dequeuereusablecellwithidentifier:nil];  if (cell == nil) {     cell = [[[uitableviewcell alloc] initwithstyle:uitableviewcellstyledefault                                    reuseidentifier:myidentifier] autorelease];     cell.selectionstyle = uitableviewcellselectionstylenone; }     [cell.contentview addsubview:[backmontharray objectatindex:indexpath.row+indexpath.section*12]]; //backmontharray contains 12 months data   return cell; }  -(void)tableview:(uitableview *)tableview willdisplaycell:(uitableviewcell *) cell forrowatindexpath:(nsindexpath *)indexpath {  if(indexpath.row == 10 && indexpath.section == _sectionno-1) //self.array array of items displaying {     dispatch_async(dispatch_get_main_queue(), ^{   [self calculatemonths:nextmonthno];         _sectionno = _sectionno+1; [_maintable insertsections:[nsindexset indexsetwithindex:_sectionno-1] withrowanimation:uitableviewrowanimationnone];     }); } } 

so want show sections before current section.