How to Build a Dice Game in Java Android?

Last Updated : 03 May, 2025

In this article, we will be building a Dice Game Project using Java/Kotlin and XML in Android. The Dice Game is based on a two-player dice game. Both dices are rolled and the winner result is displayed in a textview. There will be a single activity in this application. The result and a roll button will be displayed at the bottom.

Note that we are going to implement this project using Java and Kotlin.

How-to-Build-a-Dice-Game-in-Java-Android_

Step by Step Implementation

Step 1: Create a New Project

To create a new project in Android Studio please refer to How to Create/Start a New Project in Android Studio.

Step 2:Add Dice images to drawable folder

All the dice images are listed below. Save them in your drawable folder in resources. Go to the app > res > drawable and paste the following files:

Step 3: Working with the activity_main.xml file

The XML codes are used to build the structure of the activity as well as its styling part. It contains a TextView at the very top of the activity. Then it contains two ImageView, each displaying the image of the rolled dice. At the bottom of the activity, there is a Button to roll the dice and a TextView to display the result.

Below is the code for the activity_main.xml file.

activity_main.xml:

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 
    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"
    android:background="@color/white">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="32dp"
        android:text="DICE"
        android:textColor="@color/black"
        android:textSize="32sp"
        android:textStyle="bold"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginBottom="16dp"
        android:text="Player A"
        android:textColor="@color/black"
        android:textSize="24sp"
        android:textStyle="bold"
        app:layout_constraintBottom_toTopOf="@+id/firstDice"
        app:layout_constraintEnd_toEndOf="@+id/firstDice"
        app:layout_constraintStart_toStartOf="@+id/firstDice" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Player B"
        android:textColor="@color/black"
        android:textSize="24sp"
        android:textStyle="bold"
        app:layout_constraintBottom_toBottomOf="@+id/textView"
        app:layout_constraintEnd_toEndOf="@+id/secondDice"
        app:layout_constraintStart_toStartOf="@+id/secondDice"
        app:layout_constraintTop_toTopOf="@+id/textView" />


    <ImageView
        android:id="@+id/firstDice"
        android:layout_width="140dp"
        android:layout_height="140dp"
        android:padding="10dp"
        android:src="@drawable/dice6"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toStartOf="@+id/secondDice"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

    <ImageView
        android:id="@+id/secondDice"
        android:layout_width="140dp"
        android:layout_height="140dp"
        android:padding="10dp"
        android:src="@drawable/dice6"
        app:layout_constraintBottom_toBottomOf="@+id/firstDice"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toEndOf="@id/firstDice"
        app:layout_constraintTop_toTopOf="@+id/firstDice" />

    <Button
        android:id="@+id/rollButton"
        android:layout_width="0dp"
        android:layout_height="wrap_content"
        android:layout_margin="48dp"
        android:backgroundTint="@color/black"
        android:text="ROLL"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

    <TextView
        android:id="@+id/winnerTextView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Draw"
        android:textColor="@color/black"
        android:textSize="24sp"
        android:textStyle="bold"
        app:layout_constraintBottom_toTopOf="@+id/rollButton"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toBottomOf="@+id/firstDice" />

</androidx.constraintlayout.widget.ConstraintLayout>

Step 4: Working with the MainActivity file

We will create an array inside the file that will contain all the images of the dice. Then we will call onClickListener() for the button and generate two random numbers using the Random function. Then we will check the two numbers and display the result respectively. Also, we will set the two images from the array. Below is the code for the MainActivity file. Comments are added inside the code to understand the code in more detail.

MainActivity File:

MainActivity.java

package org.geeksforgeeks.demo;

import android.os.Bundle;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import androidx.appcompat.app.AppCompatActivity;
import java.util.Random;

public class MainActivity extends AppCompatActivity {

    private Button button;
    private ImageView firstDice;
    private ImageView secondDice;
    private TextView winnerTextView;
    private Random random = new Random();

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

        // array to store dice images
        int[] dice = {
                R.drawable.dice1, R.drawable.dice2, R.drawable.dice3,
                R.drawable.dice4, R.drawable.dice5, R.drawable.dice6
        };

        // get the references of views
        button = findViewById(R.id.rollButton);
        firstDice = findViewById(R.id.firstDice);
        secondDice = findViewById(R.id.secondDice);
        winnerTextView = findViewById(R.id.winnerTextView);

        // call the on click function
        button.setOnClickListener(v -> {
            // generate two random numbers
            // using Random function
            int num1 = random.nextInt(6);
            int num2 = random.nextInt(6);

            // set the images from the array by the index
            // position of the numbers generated
            firstDice.setImageResource(dice[num1]);
            secondDice.setImageResource(dice[num2]);

            if (num1 > num2) {
                winnerTextView.setText("Player A Wins");
            } else if (num1 < num2) {
                winnerTextView.setText("Player B Wins");
            } else {
                winnerTextView.setText("Draw");
            }
        });
    }
}

MainActivity.kt

package org.geeksforgeeks.demo

import android.os.Bundle
import android.widget.Button
import android.widget.ImageView
import android.widget.TextView
import androidx.appcompat.app.AppCompatActivity
import java.util.Random

class MainActivity : AppCompatActivity() {
    private lateinit var button: Button
    private lateinit var firstDice: ImageView
    private lateinit var secondDice: ImageView
    private lateinit var winnerTextView: TextView
    private val random = Random()

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        // array to store dice images
        val dice = intArrayOf(
            R.drawable.dice1, R.drawable.dice2, R.drawable.dice3,
            R.drawable.dice4, R.drawable.dice5, R.drawable.dice6
        )

        // get the references of views
        button = findViewById(R.id.rollButton)
        firstDice = findViewById(R.id.firstDice)
        secondDice = findViewById(R.id.secondDice)
        winnerTextView = findViewById(R.id.winnerTextView)

        // call the on click function
        button.setOnClickListener {
            // generate two random numbers
            // using Random function
            val num1 = random.nextInt(6)
            val num2 = random.nextInt(6)

            // set the images from the array by the index
            // position of the numbers generated
            firstDice.setImageResource(dice[num1])
            secondDice.setImageResource(dice[num2])

            winnerTextView.text = if (num1 > num2) {
                "Player A Wins"
            } else if (num1 < num2) {
                "Player B Wins"
            } else {
                "Draw"
            }
        }
    }
}