/**
 * Method that create the images related to the difficulty of a recepy
 * @param context
 * @param difficulty that represent the number of chef_hat_ok into the final image
 * @return a Bitmap representing the difficult of a recepy
 */
public static Bitmap createRankingImg(Context context, int difficulty) {

    // Create a Bitmap image starting from the star.png into the "/res/drawable/" directory:
    Bitmap myBitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.chef_hat_ok_resize);


    // Create a new image bitmap having width to hold 5 star.png image:
    Bitmap tempBitmap = Bitmap.createBitmap(myBitmap.getWidth() * 5, myBitmap.getHeight(), Bitmap.Config.RGB_565);

    Canvas tempCanvas = new Canvas(tempBitmap);

    // Draw the image bitmap into the cavas:
    tempCanvas.drawBitmap(myBitmap, 0, 0, null);
    tempCanvas.drawBitmap(myBitmap, myBitmap.getWidth(), 0, null);
    tempCanvas.drawBitmap(myBitmap, myBitmap.getWidth() * 2, 0, null);
    tempCanvas.drawBitmap(myBitmap, myBitmap.getWidth() * 3, 0, null);
    tempCanvas.drawBitmap(myBitmap, myBitmap.getWidth() * 4, 0, null);


    return tempBitmap;

}

difficultyContainerImageView1.setImageDrawable(new BitmapDrawable(getResources(), ImgUtility.createRankingImg(context, 3)));