Question

I am aggregating numeric ratings (1-5 stars) from a MySQL table containing many entries. It will take the average of the ratings in the column and return it as a variable into Android.

Let’s call the variable $foo.

How do I use $foo to preset the Android RatingBar so that it will programmatically change the number of stars based on the database value?

Answer 1

Use RatingBar.setRating.

float foo = 3.5;
RatingBar bar = (RatingBar) findViewById(R.id.rating_bar);
bar.setRating(foo);