Code Sample

Random Color Generation

    public Drawable applyRandomColorToDrawable(Drawable image) {
        if (image != null) {
//            PorterDuffColorFilter porterDuffColorFilter = new PorterDuffColorFilter(randomColorInt(),
            PorterDuffColorFilter porterDuffColorFilter = new PorterDuffColorFilter(getRandomAlphaColorInt(),
                    PorterDuff.Mode.SRC_ATOP);
            image.setColorFilter(porterDuffColorFilter);
        }

        return image;
    }
    
    public static int randomColorInt() {
        float[] TEMP_HSL = new float[]{0, 0, 0};
        float[] hsl = TEMP_HSL;
        hsl[0] = (float) (Math.random() * 360);
        hsl[1] = (float) (40 + (Math.random() * 60));
        hsl[2] = (float) (40 + (Math.random() * 60));
        return ColorUtils.HSLToColor(hsl);
    }
    
    public static String[] getRandomColor() {
        Random random = new Random();
        int RGB = 0xff + 1;
        String[] colors = new String[2];
        int a = 256;
        int r1 = (int) Math.floor(Math.random() * RGB);
        int r2 = (int) Math.floor(Math.random() * RGB);
        int r3 = (int) Math.floor(Math.random() * RGB);
        colors[0] = String.format("#%08X", (0xFFFFFFFF & Color.rgb(r1, r2, r3)));
        if ((r1 + r2 + r3) > 450) {
            colors[1] = "#222222";
        } else {
            colors[1] = "#ffffff";
        }
        return colors;
    }

    //    public static int getRandomAlphaColorInt(int alpha){
    public static int getRandomAlphaColorInt() {
        int r = (int) (0xff * Math.random());
        int g = (int) (0xff * Math.random());
        int b = (int) (0xff * Math.random());
//        return Color.argb(alpha, r, g, b);
        return Color.argb(0xff, r, g, b);
    }