RATING BAR

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Android RatingBar Example

A Rating Bar is used to show rating in Stars.The user can touch/drag or use arrow keys to set the rating when using the default size RatingBar.

RatingBar Example.

                                                              

main.xml

<?xml version="1.0" encoding="utf-8"?>

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"

    android:layout_width="match_parent"

    android:layout_height="match_parent"

    android:orientation="vertical"

    android:background="#C2C2A3">

    <RatingBar

        android:id="@+id/ratingBar1"

        android:layout_marginTop="50dp"

        android:layout_gravity="center_horizontal"

        android:layout_width="wrap_content"

        android:layout_height="wrap_content" />

    <Button

        android:id="@+id/button1"

        android:layout_width="fill_parent"

        android:layout_height="wrap_content"

        android:layout_marginTop="50dp"

        android:text="OK" />

</LinearLayout>

    

How to change the Number of Stars

Use  android:numStars   attribute to set the number of stars you want.

MainActivity.java

public class MainActivity extends Activity

{

        RatingBar ratingBar;

        Button btn;

     @Override

     public void onCreate(Bundle savedInstanceState) 

     {

     super.onCreate(savedInstanceState);

     setContentView(R.layout.activity_main);

    

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

     btn=(Button)findViewById(R.id.button1);

    

     // Set ChangeListener to Rating Bar

      ratingBar.setOnRatingBarChangeListener(new OnRatingBarChangeListener() {

          public void onRatingChanged(RatingBar ratingBar, float rating,

          boolean fromUser) {

          Toast.makeText(getApplicationContext(),"Your Selected Ratings  : " + String.valueOf(rating),Toast.LENGTH_LONG).show();

          

          }

          });

      

      btn.setOnClickListener(new View.OnClickListener() {

      

    

public void onClick(View arg0) {

// TODO Auto-generated method stub

float rating=ratingBar.getRating();

Toast.makeText(getApplicationContext(),"Your Selected Ratings  : " + String.valueOf(rating),Toast.LENGTH_LONG).show();

}

});

    

     }

    

    

}

How to Set The Rating at Run time
use method

ratingBar.setRating(4);   or pass any number like 3.5, 4.5 etc.