ios - UIButton overlapping and hidden unexpectedly inside UITableViewCell -

i have created auibutton programmatically inside customuitableviewcell, no. ofuibuttons inside cell dynamic , @ first looks working perfect when open collapsed cell , scroll table view uibutton overlap each other , if scroll more the uibutton in view outside screen become hidden when thy come screen area here image looks like.

i not posting code here because big , don't know part should include here. if asked post particular code here.

- (uitableviewcell *)tableview:(uitableview *)tableview cellforrowatindexpath:(nsindexpath *)indexpath {     static nsstring *cellidentifier = @"cell";     interesttableviewcell *cell = (interesttableviewcell *)[tableview dequeuereusablecellwithidentifier:cellidentifier forindexpath:indexpath];     nsstring *category= (nsstring *)[self.itemsintable objectatindex:indexpath.row];     nsmutablearray *subcat =[[nsmutablearray alloc] init];     nsarray *keys = [cat allkeys];     id akey = [keys objectatindex:indexpath.row];     subcat = [cat objectforkey:akey];     cell.btngrouptap.tag = indexpath.row+10000;     nsarray *count=(nsarray *)subcat;     int xoffset;     int yoffset = 0;     for(int i=0; i<count.count;i++)     {          if(i==0)         {             xoffset=0;         }         else         {             if(i%2 == 0)             {             xoffset = 0;             }             else             {                 xoffset = 150;             }         }         if(i==0)         {             yoffset = 0;         }         else         {             if(i%2==0)             {                 yoffset = yoffset+45;             }         }         nsstring *sel = subcat[i][@"selected"];         nsstring *key =subcat[i][@"key"];         uibutton *button = [uibutton buttonwithtype:uibuttontypecustom];         uiimage *image;         if(![sel boolvalue])         {             image = [uiimage imagenamed: @"unchecked.png"];         }         else         {             image = [uiimage imagenamed: @"checked.png"];         }         uiimageview *imageview = [[uiimageview alloc] initwithframe:cgrectmake(29,18,20,20)];         [imageview setimage:image];         uilabel *lbl1 = [[uilabel alloc] init];         [lbl1 setframe:cgrectmake(0,5,100,20)];         lbl1.backgroundcolor=[uicolor clearcolor];         lbl1.textcolor=[uicolor blackcolor];         lbl1.frame = cgrectmake(40,0,100,40);         lbl1.numberoflines =0;         [lbl1 setfont:[uifont fontwithname:@"roboto-light" size:12]];         lbl1.text= subcat[i][@"value"];         button.tag= [key integervalue];         [button settitle:@"" forstate:uicontrolstatenormal];         button.imageview.contentmode = uiviewcontentmodescaleaspectfit;         [button setbackgroundimage:image forstate:normal];         cgrect screenrect = [[uiscreen mainscreen] bounds];         cgfloat screenwidth = screenrect.size.width;         button.frame = cgrectmake(xoffset,20+yoffset,(screenwidth/2)-40,40);         [button addtarget:self action:@selector(checkaction:) forcontrolevents:uicontroleventtouchupinside];         [button addsubview:lbl1];         [cell.containerview addsubview:button];         [cell.containerview bringsubviewtofront:button];     }     cell.containerview.hidden=yes;     cell.lblcategory.text = category;     return cell; } 

full code @ github

note: used [tableview beginupdates];[tableview endupdates]; in didselectrowatindexpath.

the thing using reusable cells. think of shopping cart in market. never know if new one, maybe 1 products in it. should clean cell in cellforrowatindexpath , proceed code.

#edit seems cleaning containerview should help. like:

interesttableviewcell *cell = (interesttableviewcell *)[tableview dequeuereusablecellwithidentifier:cellidentifier forindexpath:indexpath]; [[cell.containerview subviews] makeobjectsperformselector:@selector(removefromsuperview)];