How to Build a Dice Game in Java Android? (original) (raw)
Last Updated : 23 Jul, 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 `
<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"
}
}
}}
`