Android - Circular indeterminate ProgressBar smoothly fading between various material colors

DynamicColorProgress.java

// TODO: put package information here

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.animation.ValueAnimator;
import android.content.Context;
import android.content.res.ColorStateList;
import android.graphics.Color;
import android.util.AttributeSet;
import android.widget.ProgressBar;

import java.util.Random;

import static android.graphics.Color.colorToHSV;

/**
 *
 * Created by Prem$ on 3/1/2018.
 */

public class DynamicColorProgress extends ProgressBar {

    /**
     * All the material-400 colors.
     */
    private static int[] randomMaterialColors = new int[] {
            Color.parseColor("#ef5350"),
            Color.parseColor("#EC407A"),
            Color.parseColor("#AB47BC"),
            Color.parseColor("#7E57C2"),
            Color.parseColor("#5C6BC0"),
            Color.parseColor("#42A5F5"),
            Color.parseColor("#29B6F6"),
            Color.parseColor("#26C6DA"),
            Color.parseColor("#26A69A"),
            Color.parseColor("#66BB6A"),
            Color.parseColor("#9CCC65"),
            Color.parseColor("#D4E157"),
            Color.parseColor("#FFEE58"),
            Color.parseColor("#FFCA28"),
            Color.parseColor("#FFA726"),
            Color.parseColor("#FF7043"),
            Color.parseColor("#8D6E63"),
            Color.parseColor("#BDBDBD"),
            Color.parseColor("#78909C")
    };

    private Random random;
    private int endColor;

    public DynamicProgress(Context context) {
        super(context);
        init();
    }

    public DynamicProgress(Context context, AttributeSet attrs) {
        super(context, attrs);
        init();
    }

    public DynamicProgress(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        init();
    }

    public DynamicProgress(Context context, AttributeSet attrs, int defStyleAttr, int defStyleRes) {
        super(context, attrs, defStyleAttr, defStyleRes);
        init();
    }

    @Override public synchronized boolean isIndeterminate() {
        return true;
    }

    private void init() {
        final float[] start = new float[3];
        final float[] end =   new float[3];

        colorToHSV(Color.parseColor("#26C6DA"), start);
        endColor = Color.parseColor("#ED3E51");
        colorToHSV(endColor, end);

        random = new Random();
        ValueAnimator anim = ValueAnimator.ofFloat(0, 1);
        anim.setDuration(5000);
        anim.setRepeatMode(ValueAnimator.RESTART);
        anim.setRepeatCount(ValueAnimator.INFINITE);
        final float[] hsv  = new float[3];

        anim.addUpdateListener(new ValueAnimator.AnimatorUpdateListener(){
            @Override public void onAnimationUpdate(ValueAnimator animation) {
                // Transition along each axis of HSV (hue, saturation, value)
                hsv[0] = start[0] + (end[0] - start[0]) * animation.getAnimatedFraction();
                hsv[1] = start[1] + (end[1] - start[1]) * animation.getAnimatedFraction();
                hsv[2] = start[2] + (end[2] - start[2]) * animation.getAnimatedFraction();
                setIndeterminateTintList(ColorStateList.valueOf(Color.HSVToColor(hsv)));
            }
        });
        anim.addListener(new AnimatorListenerAdapter() {
            @Override
            public void onAnimationRepeat(Animator animation) {
                colorToHSV(endColor, start);
                endColor = getRandomMaterialColor();
                colorToHSV(endColor, end);
                super.onAnimationRepeat(animation);
            }
        });
        anim.start();
    }

    public int getRandomMaterialColor(){
        return randomMaterialColors[random.nextInt(randomMaterialColors.length - 1)];
    }
}