Android RatingBar

Android RatingBar Example

RatingBar can be used to get the rating from the user. The Rating returns a floating-point number. It may be 2.0, 3.5, 4.0 etc.
The getRating() method of RatingBar class returns the rating number.

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Example of Android RatingBar

Let's see the simple example of rating bar in android.

activity_main.xml

Drag the RatingBar and Button from the pallete, now the activity_main.xml file will like this:

File: activity_main.xml

 

<RelativeLayout xmlns:androclass="http://schemas.android.com/apk/res/android"  
    xmlns:tools="http://schemas.android.com/tools"  
    android:layout_width="match_parent"  
    android:layout_height="match_parent"  
    tools:context=".MainActivity" >  
  
    <RatingBar  
        android:id="@+id/ratingBar1"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_alignParentTop="true"  
        android:layout_centerHorizontal="true"  
        android:layout_marginTop="44dp" />  
  
    <Button  
        android:id="@+id/button1"  
        android:layout_width="wrap_content"  
        android:layout_height="wrap_content"  
        android:layout_alignLeft="@+id/ratingBar1"  
        android:layout_below="@+id/ratingBar1"  
        android:layout_marginLeft="92dp"  
        android:layout_marginTop="66dp"  
        android:text="submit" />  
  
</RelativeLayout>  

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Activity class

Let's write the code to display the rating of the user.

File: MainActivity.java

 

package com.example.rating;  
  
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.Toast;  
  
public class MainActivity extends Activity {  
    RatingBar ratingbar1;  
    Button button;  
    @Override  
    protected void onCreate(Bundle savedInstanceState) {  
        super.onCreate(savedInstanceState);  
        setContentView(R.layout.activity_main);  
        addListenerOnButtonClick();  
    }  
  
    public void addListenerOnButtonClick(){  
        ratingbar1=(RatingBar)findViewById(R.id.ratingBar1);  
        button=(Button)findViewById(R.id.button1);  
        //Performing action on Button Click  
        button.setOnClickListener(new OnClickListener(){  
  
            @Override  
            public void onClick(View arg0) {  
                //Getting the rating and displaying it on the toast  
                String rating=String.valueOf(ratingbar1.getRating());  
                Toast.makeText(getApplicationContext(), rating, Toast.LENGTH_LONG).show();  
            }  
              
        });  
    }  
    @Override  
    public boolean onCreateOptionsMenu(Menu menu) {  
        // Inflate the menu; this adds items to the action bar if it is present.  
        getMenuInflater().inflate(R.menu.activity_main, menu);  
        return true;  
    }  
  
}  

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download this example

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