AndroidManifest.xml

<activity
    android:name=".activity.MainActivity">

    <!--ເພີ່ມບ່ອນນີ້-->
    <meta-data
        android:name="android.app.searchable"
        android:resource="@xml/searchable" />
</activity>

main_menu.xml

<?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/menu_settings"
        android:title="@string/settings"
        app:showAsAction="never"
        android:icon="@drawable/ic_settings_black_24dp"></item>
</menu>

MainActivity.java

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.options_menu, menu);

    // Associate searchable configuration with the SearchView
    SearchManager searchManager =
           (SearchManager) getSystemService(Context.SEARCH_SERVICE);
    SearchView searchView =
            (SearchView) menu.findItem(R.id.search).getActionView();
    searchView.setSearchableInfo(
            searchManager.getSearchableInfo(getComponentName()));
  
    searchView.setIconifiedByDefault(false)
    searchView.isQueryRefinementEnabled(true)
      
    // ສ່ວນຕໍ່ຈາກນີ້ຈະປົນໆພາສາ kotlin ເດີ້
  
    // Handling search
    searchView.setOnQueryTextListener(object: SearchView.OnQueryTextListener {
        // ຕອນຜູ່ໃຊ້ submit
        override fun onQueryTextSubmit(query: String?): Boolean {

          // ໃຫ້ເຮັດຫຍັງບາງຢ່າງຢູ່ນີ້, eg. ດຶງຂໍ້ມູນມາໂຊຈາກ pararmeter query ແລ້ວເອົາໄປອັບເດດ ListView
          
          ແທນທີ່ຈະ submit ແລ້ວດຶງໜ້າຕໍ່ໄປແມ່ນໃຫ້ອ້ງເອົາຄຳມາໃສ່ຊື່ໆ, ເປັນ onQueryTextChange ທຳມະດາ ເຮັດແບບນີ້ໄດ້
          // searchView.setQuery(query, false)
          onQueryTextChange(query)*/

          
          // ສຳຄັນ, ສົ່ງຄືນ true ເພື່ອໃຫ້ລະບົບຮູ້ວ່າເຮົາຈັດການທຸກຢ່າງຮຽບຮ້ອຍແລ້ວ ບໍ່ຕ້ອປ່ຽນໄປໜ້າຕໍ່ໄປຄືຢູ່ docs ພາສ້າງ SearchableActivity ຫັ້ນ
          return true
        }

        // ເມື່ອຜູ່ໃຊ້ພິມ
        override fun onQueryTextChange(newText: String): Boolean {

            // ໃຫ້ເຮັດຫຍັງບາງຢ່າງຢູ່ນີ້, eg. ດຶງຂໍ້ມູນມາໂຊຈາກ pararmeter newText ແລ້ວເອົາໄປອັບເດດ ListView
            
            return true
        }
    })
  
    return true;
}

searchable.xml

<!--ເອົາໄວ້ໃນ res/xml/searchable.xml-->

<?xml version="1.0" encoding="utf-8"?>
<!--To enable recent search suggestion add android:searchSuggestAuthority="devzy.com.saylao_eng.manager.SearchRecentSuggestionProvider"-->
<searchable xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:label="@string/app_name"
    android:hint="@string/search_hint">

</searchable>