listview - Custom adapter Filtering -

i using custom adapter listview, , searchmenu, before using filter gives me correct information

example:

name1 - email1 name2 - email2 name3 - email3

but after using filter searching names correct email column gives 1 row info.

example:

name3 - email1

how can solve problem, im new in java, 5 days work on problem.

customrow adapter

public class custom_row extends arrayadapter<string> {   arraylist<string> list; public custom_row(context context, arraylist<string> names, arraylist<string> email) {     super(context, r.layout.custom_cell, names);    list = email;     log.e("database operations", string.valueof(list));  } @override public view getview(int position, view convertview, viewgroup parent) {     layoutinflater peoinf = layoutinflater.from(getcontext());     view customview = peoinf.inflate(r.layout.custom_cell, parent, false);     string names = getitem(position);     string email = list.get(position);     textview name_text = (textview) customview.findviewbyid(r.id.name_text);     textview email_text = (textview) customview.findviewbyid(r.id.email_text);      name_text.settext(names);     email_text.settext(email);     return customview; } 

}

main activity

public class mainactivity extends appcompatactivity {

arrayadapter<string> adapter;  private listview listview_allcontacts;  @override protected void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     setcontentview(r.layout.activity_main);      listview_allcontacts = (listview) findviewbyid(r.id.listview_allcontacts);      listview_allcontacts.setonitemclicklistener(new adapterview.onitemclicklistener() {         @override         public void onitemclick(adapterview<?> parent, view view, int position, long id) {             intent intent = new intent(mainactivity.this, contactdetailsactivity.class);              textview v = (textview)view.findviewbyid(r.id.email_text);              string text = listview_allcontacts.getitematposition(position).tostring();            /* bundle b = new bundle();             b.putint("position", position);             intent.putextras(b);             startactivity(intent);*/              intent.putextra("id", text);             intent.putextra("email", v.gettext());             startactivity(intent);              toast.maketext(getbasecontext(), v.gettext(), toast.length_long).show();         }     }); }  @override public boolean oncreateoptionsmenu(menu menu) {     menuinflater inflater = getmenuinflater();     inflater.inflate(r.menu.options_menu, menu);     inflater.inflate(r.menu.main_menu,menu);     final menuitem item = menu.finditem(r.id.menusearch);     searchview searchview = (searchview) item.getactionview();     searchview.setonquerytextlistener(new searchview.onquerytextlistener() {         @override         public boolean onquerytextsubmit(string query) {              return false;         }          @override         public boolean onquerytextchange(string newtext) {              adapter.getfilter().filter(newtext);              return false;         }     });     return super.oncreateoptionsmenu(menu); }  @override public boolean onoptionsitemselected(menuitem item) {     switch (item.getitemid()) {         case r.id.menu_new_contact:             startactivity(new intent(mainactivity.this, contactdetailsactivity.class));             break;     }     return super.onoptionsitemselected(item); }  @override protected void onresume() {     dbhelper db = new dbhelper(this);     arraylist<string> names = new arraylist<string>();     arraylist<string> email = new arraylist<string>();      (int = 0; < db.getallcontacts().size(); i++) {         names.add(db.getallcontacts().get(i).getname());         email.add(db.getallcontacts().get(i).getemail());     }     adapter = new custom_row(this, names, email);    // arrayadapter adapter = new custom_row(this, names, email);     listview_allcontacts.setadapter(adapter);          super.onresume();     } }