Searchview in Android with Kotlin

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent" >
    <SearchView
        android:id="@+id/searchView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_alignParentTop="true"
        android:layout_marginTop="30dp" >
    </SearchView>

</RelativeLayout>

MainActivity.kt

package com.androidian.search;

import androidx.appcompat.app.AppCompatActivity;

import android.os.Bundle;
import android.view.View;
import android.widget.SearchView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    SearchView search;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        search=(SearchView) findViewById(R.id.searchView1);
        search.setQueryHint("SearchView");

        //*** setOnQueryTextFocusChangeListener ***
        search.setOnQueryTextFocusChangeListener(new View.OnFocusChangeListener() {

            @Override
            public void onFocusChange(View v, boolean hasFocus) {
                // TODO Auto-generated method stub

                Toast.makeText(getBaseContext(), String.valueOf(hasFocus),
                        Toast.LENGTH_SHORT).show();
            }
        });

        //*** setOnQueryTextListener ***
        search.setOnQueryTextListener(new SearchView.OnQueryTextListener() {

            @Override
            public boolean onQueryTextSubmit(String query) {
                // TODO Auto-generated method stub

                Toast.makeText(getBaseContext(), query,
                        Toast.LENGTH_SHORT).show();

                return false;
            }

            @Override
            public boolean onQueryTextChange(String newText) {
                // TODO Auto-generated method stub

                Toast.makeText(getBaseContext(), newText,  Toast.LENGTH_SHORT).show();
                return false;
            }
        });
    }

}