Interaction with RatingBar

Override RatingBar.OnRatingBarChangeListener() to interact with RatingBar, assign rating via Rating.setRating() method.

The smaller RatingBar style ( ratingBarStyleSmall) and the larger indicator-only style (ratingBarStyleIndicator) do not support user interaction and should only be used as indicators.


workspace/AndroidRating/res/layout/main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    >
<TextView  
    android:layout_width="fill_parent" 
    android:layout_height="wrap_content" 
    android:text="@string/hello"
    />
<RatingBar  
    android:id="@+id/ratingbar1"
    android:max="5"
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    style="?android:attr/ratingBarStyleSmall"
    />
<RatingBar  
    android:id="@+id/ratingbar2"
    android:max="5"
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    style="?android:attr/ratingBarStyleIndicator"
    />
<RatingBar  
    android:id="@+id/ratingbar3"
    android:max="5"
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    style="?android:attr/ratingBarStyle"
    />
</LinearLayout>

workspace/AndroidRating/src/com/AndroidRating/AndroidRating.java

package com.AndroidRating;

import android.app.Activity;
import android.os.Bundle;
import android.widget.RatingBar;

public class AndroidRating extends Activity {
 
 final float MaxRating = 5.0f;
 
    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        final RatingBar ratingBar1 = (RatingBar)findViewById(R.id.ratingbar1);
        final RatingBar ratingBar2 = (RatingBar)findViewById(R.id.ratingbar2);
        RatingBar ratingBar3 = (RatingBar)findViewById(R.id.ratingbar3);
        
        ratingBar3.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
   
   @Override
   public void onRatingChanged(RatingBar arg0, float arg1, boolean arg2) {
    // TODO Auto-generated method stub
    ratingBar1.setRating(arg1);
    ratingBar2.setRating(MaxRating - arg1);
   }
  });
    }
}