Develop an application to create a toggle button to display ON / OFF Bluetooth on the display screen

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity"
    android:padding="20dp">

    <ToggleButton
        android:id="@+id/toggleButton"
        android:layout_width="wrap_content"
        android:layout_height="50dp"
        android:text="ToggleButton"
        android:textOn="ON"
        android:textOff="OFF"
        android:textSize="20sp"
        android:layout_centerInParent="true"/>

    <TextView android:id="@+id/textView"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_below="@id/toggleButton"
        android:text="Bluetooth is OFF"
        android:gravity="center_horizontal"
        android:layout_marginTop="20dp"
        android:textSize="20sp"
        android:textColor="@color/colorAccent"/>

</RelativeLayout>

MainActivity.java

package com.example.togglebuttonbluetooth;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.widget.CompoundButton;
import android.widget.TextView;
import android.widget.ToggleButton;

public class MainActivity extends AppCompatActivity {

    ToggleButton toggleButton;
    TextView textView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        toggleButton = findViewById(R.id.toggleButton);
        textView = findViewById(R.id.textView);

        toggleButton.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {

                if(isChecked)
                {
                    textView.setText("Bluetooth is " + toggleButton.getTextOn());
                }
                else
                {
                    textView.setText("Bluetooth is " + toggleButton.getTextOff());
                }
            }
        });
    }
}

OUTPUT