Android RatingBar example

main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:orientation="vertical" >
 
    <TextView
        android:id="@+id/lblRateMe"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Rate Me"
        android:textAppearance="?android:attr/textAppearanceMedium" />
 
    <RatingBar
        android:id="@+id/ratingBar"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:numStars="4"
        android:stepSize="1.0"
        android:rating="2.0" />
 
    <Button
        android:id="@+id/btnSubmit"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Submit" />
 
    <LinearLayout
        android:id="@+id/linearLayout1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" >
 
        <TextView
            android:id="@+id/lblResult"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Result : "
            android:textAppearance="?android:attr/textAppearanceLarge" />
 
        <TextView
            android:id="@+id/txtRatingValue"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text=""
            android:textAppearance="?android:attr/textAppearanceSmall" />
 
    </LinearLayout>
 
</LinearLayout>

RatingBarDemoActivity.java

package com.cjp.ratingbardemo;


import android.app.Activity;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.RatingBar;
import android.widget.RatingBar.OnRatingBarChangeListener;
import android.widget.TextView;
import android.widget.Toast;


public class RatingBarDemoActivity extends Activity {
private RatingBar ratingBar;
 private TextView txtRatingValue;
 private Button btnSubmit;
 
 @Override
 public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
 
addListenerOnRatingBar();
addListenerOnButton();
 
 }
 
 public void addListenerOnRatingBar() {
 
ratingBar = (RatingBar) findViewById(R.id.ratingBar);
txtRatingValue = (TextView) findViewById(R.id.txtRatingValue);
 
//if rating value is changed,
//display the current rating value in the result (textview) automatically
ratingBar.setOnRatingBarChangeListener(new OnRatingBarChangeListener() {
public void onRatingChanged(RatingBar ratingBar, float rating,
boolean fromUser) {
 
txtRatingValue.setText(String.valueOf(rating));
 
}
});
 }
 
 public void addListenerOnButton() {
 
ratingBar = (RatingBar) findViewById(R.id.ratingBar);
btnSubmit = (Button) findViewById(R.id.btnSubmit);
 
//if click on me, then display the current rating value.
btnSubmit.setOnClickListener(new OnClickListener() {
 
@Override
public void onClick(View v) {
 
Toast.makeText(RatingBarDemoActivity.this,
String.valueOf(ratingBar.getRating()),
Toast.LENGTH_SHORT).show();
 
}
 
});
 
 }
}