how to use rating widget and average the rates - android

Question

I'm playing around with the rating widget in android. I know how to pull out the rating number from the rating widget but if I have more than one rates and I want to average the rates. How can I do that?

This is what I have at the moment.

    RatingBar ratingBar = (RatingBar) findViewById(R.id.ratingBar1);
    ratingBar.setOnRatingBarChangeListener(new OnRatingBarChangeListener() {
        @Override
        public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
            TextView rate_lotr_number = (TextView)findViewById(R.id.rate_number1);
            rate_lotr_number.setText(String.valueOf(rating));

        }
    });

    RatingBar ratingBar1 = (RatingBar) findViewById(R.id.ratingBar2);
    ratingBar1.setOnRatingBarChangeListener(new OnRatingBarChangeListener() {
        @Override
        public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
            TextView rate_lotr_number = (TextView)findViewById(R.id.rate_number2);
            rate_lotr_number.setText(String.valueOf(rating));

        }
    });

I know I could probably use a look a some arrays to make a loop so to reduce all those repeating texts but I want to try how to average the rates before trying to reduce the redundancy.

EDITED: so what I want to ask how can I calculate the average of many ratingbars

Answer 1

You can get each rating value using RatingBar.getRating(), sum all the values and divide it by the number of rating bars.

RatingBar ratingBar = (RatingBar) findViewById(R.id.ratingBar1);
RatingBar ratingBar1 = (RatingBar) findViewById(R.id.ratingBar2);

float total = 0;
total += ratingBar.getRating();
total += ratingBar1.getRating();
float average = total / 2;

Is this what you want? Please comment to avoid misunderstanding. Thank you.