android - Data of ListView keeps changing on scroll -


data of listview keeps changing on scrolling listview , down. seems wrong adapter. below code have used adapter. have 2 buttons in listview item, accept , reject request.if request either accepted or rejected 1 button appear.if request pending i.e p, both buttons displayed

public view getview(int position, view convertview_, viewgroup parent) {     // todo auto-generated method stub      viewholder view ;      system.out.println("getview " + position + " " + convertview_);      if (convertview_ == null) {          convertview_ = inflator.inflate(r.layout.received_list_row, null);         view = new viewholder();         view.imageviewpage = (imageview) convertview_                 .findviewbyid(r.id.received_postimage);         view.postimagebg = (imageview) convertview_                 .findviewbyid(r.id.received_postimagebg);          view.txt_post_title = (ctextview) convertview_                 .findviewbyid(r.id.received_txt_post_title);          view.txt_post_date = (ctextview) convertview_                 .findviewbyid(r.id.received_txt_post_date);         view.txt_post_time = (ctextview) convertview_                 .findviewbyid(r.id.received_txt_post_time);          view.llparent = (linearlayout) convertview_                 .findviewbyid(r.id.received_llparent);         view.llaccrej_btns = (linearlayout) convertview_                 .findviewbyid(r.id.ll_accrejbtns);         view.txt_acceptreq = (ctextview) convertview_                 .findviewbyid(r.id.textview_acceptreq);         view.invisible_txtbtn = (ctextview) convertview_                 .findviewbyid(r.id.invisible_btn);         view.txt_rejectreq = (ctextview) convertview_                 .findviewbyid(r.id.textview_rejectreq);          convertview_.settag(view);       } else {         view = (viewholder) convertview_.gettag();     }  view.txt_post_title.settext(list.get(position).getactivity_name()); view.txt_post_date.settext(list.get(position).getactivity_postdate());      view.txt_post_date.settext(list.get(position).getactivity_postdate());         view.txt_post_time.settext(list                 .get(position)                 .getactivity_posttime()                 .substring(                         0,                         list.get(position).getactivity_posttime()                                 .lastindexof(":")));      if(request_status.equals("p"))               {                }                else if (request_status.equals("a") && view.txt_acceptreq.gettag().equals(position))              {             linearlayout.layoutparams params = new linearlayout.layoutparams(                     layoutparams.wrap_content, layoutparams.match_parent);             params.weight = 1.0f;               view.txt_rejectreq.setvisibility(view.gone);             view.txt_rejectreq.setclickable(false);               view.invisible_txtbtn.setvisibility(view.gone);              view.txt_acceptreq.settext("accepted");             view.txt_acceptreq.setclickable(false);                view.txt_acceptreq.setgravity(gravity.center);             view.txt_acceptreq.setlayoutparams(params);              }            else if (request_status.equals("r") && view.txt_rejectreq.gettag().equals(position)) {              linearlayout.layoutparams params = new linearlayout.layoutparams(                     layoutparams.wrap_content, layoutparams.match_parent);             params.weight = 1.0f;              view.txt_acceptreq.setvisibility(view.gone);             view.txt_acceptreq.setclickable(false);              view.invisible_txtbtn.setvisibility(view.gone);              view.txt_rejectreq.settext("rejected");             view.txt_rejectreq.setclickable(false);              view.txt_rejectreq.setgravity(gravity.center);             view.txt_rejectreq.setlayoutparams(params);           }             view.txt_acceptreq.setonclicklistener(new view.onclicklistener() {              @override             public void onclick(view arg0) {                 // todo auto-generated method stub                 system.out.println("clicked accepted" + position);                  linearlayout.layoutparams params = new linearlayout.layoutparams(                         layoutparams.wrap_content, layoutparams.match_parent);                 params.weight = 1.0f;                 view.txt_acceptreq.settext("accepted");                 view.txt_acceptreq.setclickable(false);                 view.txt_acceptreq.setgravity(gravity.center);                 view.txt_acceptreq.setlayoutparams(params);                 view.txt_rejectreq.setvisibility(view.gone);                 view.txt_rejectreq.setclickable(false);                 view.invisible_txtbtn.setvisibility(view.gone);                  int user_id = list.get(position).getuser_id();                 int activity_id = list.get(position).getactivity_id();                 string status = "a";                 macc_rejrequesttask = new acceptrejectactivityrequesttask(                         maccept_rejrequestresponder, activity);                 asyncutil.execute(macc_rejrequesttask, "" + user_id, ""                         + activity_id, status);              }         });          view.txt_rejectreq.setonclicklistener(new view.onclicklistener() {              @override             public void onclick(view arg0) {                 // todo auto-generated method stub                 system.out.println("clicked rejected " + position);                 linearlayout.layoutparams params   =                              new linearlayout.layoutparams(                         layoutparams.wrap_content, layoutparams.match_parent);                 params.weight = 1.0f;                  view.txt_rejectreq.settext("rejected");                 view.txt_rejectreq.setclickable(false);                 view.txt_rejectreq.setgravity(gravity.center);                 view.txt_rejectreq.setlayoutparams(params);                  view.txt_acceptreq.setvisibility(view.gone);                 view.txt_acceptreq.setclickable(false);                 view.invisible_txtbtn.setvisibility(view.gone);                  int user_id = list.get(position).getuser_id();                 int activity_id = list.get(position).getactivity_id();                 string status = "r";                 macc_rejrequesttask = new acceptrejectactivityrequesttask(                         maccept_rejrequestresponder, activity);                 asyncutil.execute(macc_rejrequesttask, "" + user_id, ""                         + activity_id, status);              }         });       return convertview_; }


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