Filter method return just the first item Android -


i have recyclerview , tried make filter search recycler item , working , when use , type thing result first item of list.

this filter method 

 private list<data> filter(list<data> datas, string newtext) {     newtext = newtext.tolowercase();      final list<data> filteredmodellist = new arraylist<>();     (data data : datas) {          final string text = data.gettodo_title().tolowercase();         if (text.contains(newtext)) {             filteredmodellist.add(data);         }     }     return filteredmodellist; }

and menu 

  @override public boolean oncreateoptionsmenu(menu menu) {     getmenuinflater().inflate(r.menu.menu_search, menu);     menuitem searchitem = menu.finditem(r.id.action_search);     searchview searchview = (searchview) menuitemcompat.getactionview(searchitem);     searchview.setonquerytextfocuschangelistener(new view.onfocuschangelistener() {         @override         public void onfocuschange(view v, boolean hasfocus) {         }     });     searchview.setonquerytextlistener(new searchview.onquerytextlistener() {         @override         public boolean onquerytextsubmit(string query) {              return true;         }         @override         public boolean onquerytextchange(final string searchquery) {             final list<data> filteredmodellist = filter(dblist, searchquery);             filteredmodellist.indexof(searchquery);             list <data> search =filteredmodellist;             todorecyclerview.scrolltoposition(0);             recycleradapter = new todorecycleradapter(search);             recycleradapter.notifydatasetchanged();              return false;}});     menuitemcompat.setonactionexpandlistener(searchitem, new menuitemcompat.onactionexpandlistener() {         @override         public boolean onmenuitemactioncollapse(menuitem item) {             return true;         }         @override         public boolean onmenuitemactionexpand(menuitem item) {             return true;         }     });     return true; } @override public boolean onoptionsitemselected(menuitem item) {     int id = item.getitemid();     if (id == r.id.action_search) {         return true;     }     return super.onoptionsitemselected(item); }}

why creating new instance of adapter everytime search?

recycleradapter = new todorecycleradapter(search);

instead create in once , call recycleradapter.notifydatasetchanged();


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