Android Studio – How to Save a background drawable?

I realized that, even though the Sharedprefs, saves the checkbox state, it doesn’t keep the drawable resource background thingy that way…… any way to save that too? I was hoping it stays like the picture below. EDIT : So my objective would be that, On checkbox being checked, background changes, because of sharedprefs, the checked state is saved and on exiting the app, the checkbox remains checked but the background of the checkbox returns to its "un-highlighted" state without the drawable background

    CheckBox C1,C2,C3;
    //Creating keys for sharedpreference
    private static final String C1key = "C1_key";
    private static final String C2key = "C2_key";
    private static final String C3key = "C3_key";
    SharedPreferences shp = null;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_anime);
        
        //sharedpreference created with the name as anime
        shp = getSharedPreferences("Anime",MODE_PRIVATE);

        //This is just background gradient animation
        ConstraintLayout constraintLayout = findViewById(R.id.layout_anime);
        AnimationDrawable animationDrawable = (AnimationDrawable) constraintLayout.getBackground();
        animationDrawable.setEnterFadeDuration(2000);
        animationDrawable.setExitFadeDuration(4000);
        animationDrawable.start();

        //Initializing checkboxes
        C1 = findViewById(R.id.C1);
        C2 = findViewById(R.id.C2);
        C3 = findViewById(R.id.C3);

        //mapping checkbox and string for ease of use during sharedprefs
        Map<String, CheckBox> checkBoxMap = new HashMap();
        checkBoxMap.put(C1key,C1);
        checkBoxMap.put(C2key,C2);
        checkBoxMap.put(C3key,C3);
       
       //loading initial values from sharedprefs, and also creating onCheckedChangeListeners from the map
        loadInitialValues(checkBoxMap);
        setupCheckedChangeListener(checkBoxMap);
    }

 

    public void loadInitialValues(Map<String, CheckBox> checkboxMap) {
        for (Map.Entry<String, CheckBox> checkboxEntry: checkboxMap.entrySet()) {
            boolean checked = shp.getBoolean(checkboxEntry.getKey(), false);
            checkboxEntry.getValue().setChecked(checked);
        }
    }


    public void setupCheckedChangeListener(Map<String, CheckBox> checkboxMap) { //for loop to cover all the checkboxes and keys in the map
        for (final Map.Entry<String, CheckBox> checkboxEntry: checkboxMap.entrySet()) {
            checkboxEntry.getValue().setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
                @Override
                public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                    final SharedPreferences.Editor editor = shp.edit();
                    editor.putBoolean(checkboxEntry.getKey(), isChecked);
                    editor.apply();
                    // this part is to turn the background of the checkbox to a specified drawable when its checked and when it isn't 
                    if(checkboxEntry.getValue().isChecked()) //checkboxentry.getvalue().ischecked is to check whether specific checkboxes are in the checked state or not, Ex C1.ischecked() C2.ischecked() and so on
                    {
                        checkboxEntry.getValue().setBackgroundResource(R.drawable.cb_background);
                    }
                    else
                    {
                checkboxEntry.getValue().setBackgroundResource(R.drawable.cb_background_default);
                    }

                }
            });
        }