objective c - update UITableView sectionHeaderHeight at time of UIButton click in iOS -

good day! default tableview sectionheaderheight 56. want update when sectionopened method gets called.this following code:

- (void) sectionopened : (nsinteger) section    {             sectionheight = @"yes";                    getsection = section;                  nslog(@"section clicked: %ld",(long)getsection);              sectioninfo *array = [self.sectioninfoarray objectatindex:section];             array.open = yes;             nsinteger count = [array.category.menulist count];             nsmutablearray *indexpathtoinsert = [[nsmutablearray alloc] init];             (nsinteger = 0; i<count;i++)             {                             [indexpathtoinsert addobject:[nsindexpath indexpathforrow:i insection:section]];             }              nsmutablearray *indexpathstodelete = [[nsmutablearray alloc] init];             nsinteger previousopenindex = self.opensectionindex;              if (previousopenindex != nsnotfound)             {                  sectioninfo *sectionarray = [self.sectioninfoarray objectatindex:previousopenindex];                 sectionarray.open = no;                 nsinteger counts = [sectionarray.category.menulist count];                 [sectionarray.sectionview togglebuttonpressed:false];                 (nsinteger = 0; i<counts; i++)                 {                     [indexpathstodelete addobject:[nsindexpath indexpathforrow:i insection:previousopenindex]];                 }             }              uitableviewrowanimation insertanimation;             uitableviewrowanimation deleteanimation;             if (previousopenindex == nsnotfound || section < previousopenindex)             {                  insertanimation = uitableviewrowanimationtop;                 deleteanimation = uitableviewrowanimationbottom;             }             else             {                 insertanimation = uitableviewrowanimationbottom;                 deleteanimation = uitableviewrowanimationtop;             }              [menulisttable beginupdates];             if(section==3 || section==4 || section==5) // section has cells submenu of menu             {                 menulisttable.sectionheaderheight = 20.0;                 [menulisttable reloadsections:[nsindexset indexsetwithindex:section] withrowanimation:uitableviewrowanimationnone];                 //[menulisttable reloadsections:[nsindexset indexsetwithindex:0] withrowanimation:uitableviewrowanimationnone];             }             [menulisttable insertrowsatindexpaths:indexpathtoinsert withrowanimation:insertanimation];             [menulisttable deleterowsatindexpaths:indexpathstodelete withrowanimation:deleteanimation];             [menulisttable endupdates];             self.opensectionindex = section;           } 

but nothing happening. used indexsetwithindex:0. whats wrong in code?

try change height:

[menulisttable beginupdates]; menulisttable.sectionheaderheight = 20.0; [menulisttable endupdates]; 

edited:

take variable set sectionheaderheight. place code:

[menulisttable beginupdates]; secheaderheight = 20.0; [menulisttable endupdates];  - (cgfloat)tableview:(uitableview *)tableview heightforheaderinsection:(nsinteger)section {     return secheaderheight; } 

hope work you.