android - Changing the value of the parent by clicking a child in a expandable list view -

hi guys trying change value of parent clicking child in expandable list. have looked solution cant find anything.

public boolean onchildclick(expandablelistview parent, view v, int groupposition, int              childposition, long id){             expandablelistadapter itemadapter = parent.getexpandablelistadapter();             string selecteditem = (string)itemadapter.getchild(groupposition, childposition);             groupheader(selecteditem);             if(parent.isgroupexpanded(groupposition)){                 parent.collapsegroup(groupposition);             }              return true;         }      }); 

an expandablelistview depends on adapter obtain values. values come sort of data structure, arraylist or simple array. in onchildclick(), pass reference data structure used build expandablelistadapter , modify data structure directly, followed call notifydatasetchanged().

public boolean onchildclick(expandablelistview parent, view v, int groupposition, int childposition, long id) {         expandablelistadapter itemadapter = parent.getexpandablelistadapter();         string selecteditem = (string)itemadapter.getchild(groupposition, childposition);         groupheader(selecteditem);         if(parent.isgroupexpanded(groupposition))         {             parent.collapsegroup(groupposition);         }         // logic here         // expandablelistarraylist.add() or expandablelistarraylist.remove()         // or whatever          itemadapter.notifydatasetchanged();          return true;     } }); 

you have extend adapter create functionality need. question bit nebulous because can't see overall structure of code, should give running start.