Android RatingBar

Create a simple example of using a RatingBar in Android. In this example, we'll create an Android app with a RatingBar, and the user can set the rating using the RatingBar. We'll also display a toast message with the selected rating.

Here is the tutorial for Kotlin

There Are Some Common Attributes for RatingBar:

Step 1:

File open res/layout/activity_main.xml file −:

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".MainActivity">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:layout_margin="20dp"
        android:orientation="vertical">

        <RatingBar
            android:id="@+id/ratingBar"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"

            android:layout_centerInParent="true"
            android:numStars="5"
            android:stepSize="1.0" />

        <TextView
            android:id="@+id/ratingText"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_below="@id/ratingBar"
            android:layout_centerHorizontal="true"
            android:layout_marginTop="16dp"
            android:text="Selected Rating: 0.0" />

    </LinearLayout>


</RelativeLayout>

Step 2:

File open com.microappvalley.newtestproject/MainActivity.java file −

Java:

package com.microappvalley.newtestproject;

import androidx.appcompat.app.AppCompatActivity;
import android.annotation.SuppressLint;
import android.os.Bundle;
import android.widget.RatingBar;
import android.widget.TextView;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

    private RatingBar ratingBar;
    private TextView ratingText;


    @SuppressLint("MissingInflatedId")
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        ratingBar = findViewById(R.id.ratingBar);
        ratingText = findViewById(R.id.ratingText);

        ratingBar.setOnRatingBarChangeListener(new RatingBar.OnRatingBarChangeListener() {
            @Override
            public void onRatingChanged(RatingBar ratingBar, float rating, boolean fromUser) {
                // Update the text view with the selected rating
                ratingText.setText("Selected Rating: " + rating);

                // Display a toast message with the selected rating
                Toast.makeText(MainActivity.this, "Selected Rating: " + rating, Toast.LENGTH_SHORT).show();
            }
        });

    }
}

Open Device Manager, run the emulator, and  then run the application. Next, check the working output and check the output  you declared in your code.