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.
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"); } }); } } 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" } } } } Output: