RatingBar in Android

By / January 16, 2021

In this tutorial, we will learn how to use RatingBar in Android. RatingBar is used to get the rating from users. User can give rating by clicking on starts. When the user clicks on starts of Ratingbar it returns float value like 2.5, 1.0, 4.5 etc. In this tutorial, we will learn how to add Ratingbar in the XML layout file. How to get Rating in Java file.

First of all, we will write our layout file code. In the layout file, we will add a RatingBar widget and a button. After that, we will write code in Java file to get rating given by the user on button click. Check this XML code.

XML Code:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:padding="16dp"
    tools:context=".MainActivity">
    <RatingBar
        android:id="@+id/ratingbar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:saveEnabled="true"
        android:numStars="5"
        android:layout_marginBottom="10dp"
        />

    <Button
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Submit"
        android:id="@+id/submit"/>
</LinearLayout>

After writing this code we will write code in our java file to fetch rating given by the user.

Java Code:

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

       final RatingBar ratingBar=findViewById(R.id.ratingbar);
       final Button button=findViewById(R.id.submit);

       button.setOnClickListener(new View.OnClickListener() {
           @Override
           public void onClick(View view) {
               float rating=ratingBar.getRating();
               Toast.makeText(getApplicationContext(),rating+"",Toast.LENGTH_SHORT).show();
           }
       });
    }
}

Output:

Here is the output after writing this code.

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