How to Create Ratinbar and get value in program in Android

Let's I m going to create Simple Android Application

which work with RatingBar and display Value in Message.


Screenshot:

activity_main.xml file code:


<RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <RatingBar
        android:id="@+id/ratingBar1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentRight="true"
        android:layout_alignParentTop="true"
        android:layout_marginRight="25dp"
        android:layout_marginTop="102dp" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignLeft="@+id/ratingBar1"
        android:layout_alignParentTop="true"
        android:layout_marginLeft="62dp"
        android:layout_marginTop="38dp"
        android:text="Give Star"
        android:textAppearance="?android:attr/textAppearanceLarge" />

    <Button
        android:id="@+id/button1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignRight="@+id/textView1"
        android:layout_centerVertical="true"
        android:text="Check" />

</RelativeLayout>



Mainactivity.java file code:

 package com.example.ratingbarsam;

import android.os.Bundle;
import android.app.Activity;
import android.view.Menu;
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.Toast;

public class MainActivity extends Activity {

  
    float ratingByUser;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
    final RatingBar rtbar=(RatingBar) findViewById(R.id.ratingBar1);
    Button btn=(Button) findViewById(R.id.button1);
  
  
   rtbar.setOnRatingBarChangeListener(new OnRatingBarChangeListener() {
  
    @Override
    public void onRatingChanged(RatingBar arg0, float rating, boolean arg2) {
        // TODO Auto-generated method stub
        ratingByUser=rating;
    }
});
  
  
    btn.setOnClickListener(new OnClickListener() {
      
        @Override
        public void onClick(View arg0) {
            // TODO Auto-generated method stub
              Toast.makeText(getApplicationContext(),
                      "User Rating  " + ratingByUser, Toast.LENGTH_SHORT)
                      .show();

      
        }
    });
  
    }


  
}





 

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