Is there any way to change the color of star?
I don't want to use custom images to achieve it.
You can add these lines into on create method.
RatingBar ratingBar = (RatingBar) findViewById(R.id.ratingBar);
LayerDrawable stars = (LayerDrawable) ratingBar.getProgressDrawable();
stars.getDrawable(0).setColorFilter(Color.GREEN, PorterDuff.Mode.SRC_ATOP);
stars.getDrawable(1).setColorFilter(Color.RED, PorterDuff.Mode.SRC_ATOP);
stars.getDrawable(2).setColorFilter(Color.YELLOW, PorterDuff.Mode.SRC_ATOP);