Save Switch State In Android

<Switch
        android:gravity="center"

        android:id="@+id/simpleSwitch"

        android:layout_width="match_parent"

        android:layout_height="wrap_content"

        android:text="Sentence Notification"

        android:showText="true"

        android:textOff="No"

        android:textOn="Yes"/>

Java:
  Button savebtn;

    Switch simpleSwitch;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_setting);

      simpleSwitch = (Switch) findViewById(R.id.simpleSwitch); // initiate Switch



        SharedPreferences sharedPrefs = getSharedPreferences("com.example.xyz", MODE_PRIVATE);

        simpleSwitch.setChecked(sharedPrefs.getBoolean("NameOfThingToSave", true));

        simpleSwitch.setTextOn("On");

        simpleSwitch.setTextOff("Off");

        savebtn = findViewById(R.id.savebutton);

        savebtn.setOnClickListener(this);


    }


    @Override

    public void onClick(View view) {

        if (view.getId() ==R.id.savebutton)

        {



            if (simpleSwitch.isChecked())

            {

                PackageManager pm = getPackageManager();



//Enable Activity

                pm.setComponentEnabledSetting(new ComponentName(this, com.example.bellofenglish.MainActivity.class),

                        PackageManager.COMPONENT_ENABLED_STATE_ENABLED, PackageManager.DONT_KILL_APP);

                Toast.makeText(Setting.this,"ON",Toast.LENGTH_LONG).show();



                SharedPreferences.Editor editor = getSharedPreferences("com.example.xyz", MODE_PRIVATE).edit();

                editor.putBoolean("NameOfThingToSave", true);

                editor.commit();

            }

            else

            {
         

//Disable Activity


                PackageManager pm = getPackageManager();

                pm.setComponentEnabledSetting(new ComponentName(this, com.example.bellofenglish.MainActivity.class),

                        PackageManager.COMPONENT_ENABLED_STATE_DISABLED, PackageManager.DONT_KILL_APP);

                Toast.makeText(Setting.this,"OFF",Toast.LENGTH_LONG).show();

               
                SharedPreferences.Editor editor = getSharedPreferences("com.example.xyz", MODE_PRIVATE).edit();

                editor.putBoolean("NameOfThingToSave", false);

                editor.commit();

            }