Rating Bar Example in Android

RatibgBarActivity.xml

 <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
              xmlns:tools="http://schemas.android.com/tools"
              android:id="@+id/activity_rating_bar"
              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"
              android:orientation="vertical"
              tools:context="com.bhaumik.programmingstudy.RatingBarActivity">

    <RatingBar
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/rating"
            android:layout_gravity="center_horizontal"
            android:stepSize="0.25"
            android:numStars="5"/>
    <Button
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:text="Click Rate"
            android:id="@+id/btn_click"
            android:textAllCaps="false"
            android:textSize="16dp"
            android:layout_marginTop="20dp"/>

< /LinearLayout>

RatingBarActivity.java

package com.bhaumik.programmingstudy;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.RatingBar;

public class RatingBarActivity extends AppCompatActivity {

    Button click;
    RatingBar ratingBar;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_rating_bar);

        click = (Button) findViewById(R.id.btn_click);
        ratingBar = (RatingBar) findViewById(R.id.rating);

        click.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {

                float ratings = ratingBar.getRating();

               ToastMsg.ShowToast(RatingBarActivity.this,"Rating is : " + ratings);
            }
        });
    }
}