Android: Filtering in the Adapter does not working -

i have following class filtering called on onquerytextchange. problem found results not updated in list of found results. example have list (see. image below):

and entered query "test 1", updated result should contain 1 found row.

but result list still same.

i ask should update filtered results in right way.

many advice.

mainactivity

searchview.setonquerytextlistener(new searchview.onquerytextlistener() {              @override             public boolean onquerytextsubmit(string s) {                 logger.d("onquerytextsubmit ");                 return false;             }              @override             public boolean onquerytextchange(string s) {                 logger.d(s);                 logger.d("onquerytextchange ");                 madapter = new wlannetworkadapter(datacontainer.getaccesspointlist(), getparent()).getfilter();                 madapter.filter(s.tostring());                 //todo: https://coderwall.com/p/zpwrsg/add-search-function-to-list-view-in-android                 return true;             }         }); 

adapter:

public class wlannetworkadapter extends baseadapter implements filterable {      private list<wlannetwork> maccesspointlist;     private activity context;     private filter mfilter;     layoutinflater inflater;     private list<wlannetwork> filteredwlanlist;      public wlannetworkadapter(list<wlannetwork> maccesspointlist, activity context) {         this.maccesspointlist = maccesspointlist;         this.context = context;     }      @override     public int getcount() {         return maccesspointlist.size();     }      @override     public object getitem(int arg0) {         return maccesspointlist.get(arg0);     }      @override     public long getitemid(int arg0) {         // todo auto-generated method stub         return arg0;     }      @override     public view getview(int arg0, view rowview, viewgroup arg2) {         //with simple check, can save overhead of inflating new view each row.         //this make our listview faster.         if (rowview == null) {             layoutinflater inflater = (layoutinflater) context.getsystemservice(context.layout_inflater_service);             rowview = inflater.inflate(r.layout.list_item_found_wlan_data, arg2, false);         }          // set text values textviews in item         textview ssidtv = (textview) rowview.findviewbyid(r.id.found_wlan_ssid_tv);         ssidtv.settext(maccesspointlist.get(arg0).getssid());          textview passwordtv = (textview) rowview.findviewbyid(r.id.found_wlan_password_tv);         passwordtv.settext(maccesspointlist.get(arg0).getpsk());          return rowview;     }      @override     public filter getfilter() {          filter filter = new filter() {              @suppresswarnings("unchecked")             @override             protected void publishresults(charsequence constraint, filterresults results) {                  maccesspointlist = (list<wlannetwork>) results.values; // has filtered values                 notifydatasetchanged();  // notifies data new filtered values             }              @override             protected filterresults performfiltering(charsequence constraint) {                 filterresults results = new filterresults();        // holds results of filtering operation in values                 // implement here filter logic                 if (constraint == null || constraint.length() == 0) {                     logger.d("search query empty, display values");                     // no filter implemented return list                     results.values = foundcontroller.getaccesspointslist();                     results.count = foundcontroller.getaccesspointslist().size();                 } else {                     logger.d("search query is: " + constraint.tostring());                     // perform filtering operation                     filteredwlanlist = new arraylist<wlannetwork>();                      (wlannetwork wlannetwork : foundcontroller.getaccesspointslist()) {                         if (wlannetwork.getssid().touppercase().startswith(constraint.tostring().touppercase())) {                             logger.d("found");                             filteredwlanlist.add(wlannetwork);                         }                     }                     logger.d("count :");                     logger.d(string.valueof(filteredwlanlist.size()));                     results.values = filteredwlanlist;                     results.count = filteredwlanlist.size();                 }                 return results;             }          };         return filter;     }  } 

change mainactivity code :

searchview.setonquerytextlistener(new searchview.onquerytextlistener() {          @override         public boolean onquerytextsubmit(string s) {             logger.d("onquerytextsubmit ");             return false;         }          @override         public boolean onquerytextchange(string s) {             if (adapter != null)                 adapter.getfilter().filter(s);             return false;         }     });