Android Listview with Search filter -

i trying make listview search android.i using simplecursoradapter on ontextchanged have found error adapter cannot resolved or not field.how can resolve error .i using simplecursoradapter .i not able use adapter.getfilter().filter(cs);

listview lv; cursor cursur1; edittext search ; int textlength=0; arrayadapter<string> adapter1; @suppresswarnings("deprecation") @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);      setcontentview(r.layout.fragment_main);      search = (edittext) findviewbyid(r.id.inputsearch);      final string [] from={contactscontract.commondatakinds.phone.display_name,contactscontract.commondatakinds.phone.number,contactscontract.commondatakinds.phone._id};     int [] m={android.r.id.text1,android.r.id.text2};      lv=getlistview();     lv.setchoicemode(listview.choice_mode_multiple);      cursur1=getcontentresolver().query(contactscontract.commondatakinds.phone.content_uri, null, null, null, null);     startmanagingcursor(cursur1);       @suppresswarnings("deprecation")       simplecursoradapter adapter=new simplecursoradapter(this,       android.r.layout.simple_list_item_2, cursur1, from,m);      setlistadapter(adapter);       search.addtextchangedlistener(new textwatcher() {          @override         public void ontextchanged(charsequence cs, int arg1, int arg2, int arg3) {             // todo auto-generated method stub         mainactivity.this.adapter.getfilters().filter(cs);          }          @override         public void beforetextchanged(charsequence arg0, int arg1, int arg2,                 int arg3) {             // todo auto-generated method stub          }          @override         public void aftertextchanged(editable arg0) {             // todo auto-generated method stub          }     });   }  @override public long getselecteditemid() {     // todo auto-generated method stub     return super.getselecteditemid(); }  @override public int getselecteditemposition() {     // todo auto-generated method stub     return super.getselecteditemposition(); } 

}

try this.. inside add text change listener

youradapterorwhateveradapter adapter = (youradapterorwhateveradapter) listview.getadapter();   adapter.getfilter().filter(s); adapter.notifydatasetchanged()