get Accent color from OS and set Toolbar and Status bar programmatically

import android.app.SearchManager;

import android.content.Context;

import android.content.Intent;

import android.content.res.TypedArray;

import android.graphics.drawable.ColorDrawable;

import android.net.Uri;

import android.os.Build;

import android.os.Build.VERSION;

import android.os.Bundle;

import android.os.Handler;

import com.google.android.material.floatingactionbutton.FloatingActionButton;

import com.google.android.material.tabs.TabLayout;

import androidx.appcompat.view.ContextThemeWrapper;

import androidx.fragment.app.Fragment;

import androidx.fragment.app.FragmentManager;

import androidx.core.view.MenuItemCompat;

import androidx.appcompat.widget.SearchView.OnQueryTextListener;

import androidx.appcompat.widget.Toolbar;

import android.util.Log;

import android.util.TypedValue;

import android.view.Menu;

import android.view.MenuInflater;

import android.view.MenuItem;

                }

            });

        }

        fetchAccentColor(this);

    }

    public boolean isInTransientState() {

        return mTransientState;

    }

    /*

     * get Accent color from OS

     * */

    private int fetchAccentColor(Context context) {

        TypedValue typedValue = new TypedValue();

        ContextThemeWrapper contextThemeWrapper = new ContextThemeWrapper(this,

                android.R.style.Theme_DeviceDefault);

        contextThemeWrapper.getTheme().resolveAttribute(android.R.attr.colorAccent,

                typedValue, true);

        int color_accent = typedValue.data;

        Log.e("TAG", "accent Colour  #"+Integer.toHexString(color_accent));

        //change toolbar color

        getSupportActionBar().setBackgroundDrawable(

                new ColorDrawable(color_accent));

        //change status bar color

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {

            Window window = getWindow();

            window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);

            window.setStatusBarColor(darkenColor(color_accent));

        }

        return color_accent;

    }

    @ColorInt int darkenColor(@ColorInt int color) {

        float[] hsv = new float[3];

        android.graphics.Color.colorToHSV(color, hsv);

        hsv[2] *= 0.8f;

        return android.graphics.Color.HSVToColor(hsv);

    }

}