1.

       Buat ListView untuk menampung datanya

<resources>

    <string name="app_name">SearchBar</string>

    <string-array name="array_country">

        <item>Afganistan</item>

        <item>Australia</item>

        <item>Afrika Selatan</item>

        <item>Amerika</item>

        <item>Belanda</item>

        <item>Brazil</item>

        <item>Brunei Darussalam</item>

        <item>China</item>

        <item>Ceko</item>

        <item>Estonia</item>

        <item>Denmark</item>

        <item>Finlandia</item>

        <item>Francis</item>

        <item>Ghana</item>

        <item>Haiti</item>

        <item>Honduras</item>

        <item>Hongaria</item>

        <item>Italia</item>

        <item>India</item>

        <item>Iran</item>

        <item>Irak</item>

        <item>Israel</item>

        <item>Indonesia</item>

        <item>Inggris</item>

        <item>Jerman</item>

        <item>Jepang</item>

        <item>Kanada</item>

        <item>Korea Selatan</item>

        <item>Kabul</item>

        <item>Leshoto</item>

        <item>Latvia</item>

        <item>Luxseburg</item>

        <item>Madagaskar</item>

        <item>Malaysia</item>

        <item>Maldives</item>

        <item>Mesir</item>

        <item>Meksiko</item>

        <item>Nepal</item>

        <item>Norwegia</item>

        <item>Oman</item>

        <item>Paraguay</item>

        <item>Papua Nugini</item>

        <item>Peru</item>

        <item>Pilipina</item>

        <item>Portugal</item>

        <item>Qatar</item>

        <item>Rusia</item>

        <item>Swedia</item>

        <item>Swiss</item>

        <item>Saudi Arabia</item>

        <item>Selandia Baru</item>

        <item>Singapura</item>

        <item>Thailand</item>

        <item>Timor Leste</item>

        <item>Turkey</item>

        <item>Uruguay</item>

        <item>Uganda</item>

        <item>Vietnam</item>

        <item>Yaman</item>

    </string-array>

</resources>

<?xml version="1.0" encoding="utf-8"?>

<menu xmlns:android="http://schemas.android.com/apk/res/android"

    xmlns:app="http://schemas.android.com/apk/res-auto">



    <item

        android:id="@+id/menuSearch"

        android:icon="@android:drawable/ic_menu_search"

        android:title="Search"

        app:actionViewClass="android.support.v7.widget.SearchView"

        app:showAsAction="always"></item>



</menu>

package com.example.asus.searchbar;



import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.support.v7.widget.SearchView;

import android.view.Menu;

import android.view.MenuInflater;

import android.view.MenuItem;

import android.widget.ArrayAdapter;

import android.widget.ListView;



import java.util.ArrayList;

import java.util.Arrays;



public class MainActivity extends AppCompatActivity {



    ArrayAdapter<String> adapter;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        ListView lv = (ListView) findViewById(R.id.listViewCountry);

        ArrayList<String>  ArrayCountry = new ArrayList<>();

        ArrayCountry.addAll(Arrays.asList(getResources().getStringArray(R.array.array_country)));



        adapter = new ArrayAdapter<String>(

                MainActivity.this,

                android.R.layout.simple_list_item_1,

                ArrayCountry);

        lv.setAdapter(adapter);

    }



    @Override

    public boolean onCreateOptionsMenu(Menu menu) {

        MenuInflater inflater = getMenuInflater();

        inflater.inflate(R.menu.menu_search, menu);

        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);

    }

}