how to make rating bar in your android app

activity_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>

MainActivity.java:

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 MyAndroidAppActivity 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(MyAndroidAppActivity.this,
    String.valueOf(ratingBar.getRating()),
     Toast.LENGTH_SHORT).show();

  }

 });

  }
}

output: