How to Add a Third Button to an Android Alert Dialog?

0 1 2 minutes read

An Alert Dialog in Android is a small window that pops up on the screen to display important information, warnings, or confirmations to the user. It can be used to prompt the user for input, provide a message, or display an error.

Step by Step Implementation

Step 1: Create a New Project in Android Studio

To create a new project in Android Studio please refer to How to Create/Start a New Project in Android Studio. Note that select Kotlin as the programming language.

Step 2: Working with the activity_main.xml file

Navigate to the app > res > layout > activity_main.xml and add the below code to that file. Below is the code for the activity_main.xml file.

XML

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout 
    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:orientation="vertical"
    android:gravity="center"
    tools:context=".MainActivity">
  
    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Alert Dialog Boxes"
        android:textStyle="bold"
        android:textSize="20sp"/>
    
    <Button
        android:id="@+id/btn1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Button 1"
        android:layout_margin="20dp"
        android:backgroundTint="#4CAF50"
        android:onClick="BTN1"/>
  
    <Button
        android:id="@+id/btn2"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Button 2"
        android:layout_margin="20dp"
        android:backgroundTint="#4CAF50"
        android:onClick="BTN2"/>
  
    <Button
        android:id="@+id/btn3"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="Button 3"
        android:layout_margin="20dp"
        android:backgroundTint="#4CAF50"
        android:onClick="BTN3"/>
  
</LinearLayout>

Step 3: Working with the MainActivity.java file

Go to the MainActivity.java file and refer to the following code. Below is the code for the MainActivity.java file.

Java

package com.anas.gfgalertdialog;
  
import androidx.appcompat.app.AlertDialog;
import androidx.appcompat.app.AppCompatActivity;
  
import android.app.Dialog;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
  
public class MainActivity extends AppCompatActivity{
  
    Button btn1,btn2,btn3;
  
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
  
        btn1=findViewById(R.id.btn1);
        btn2=findViewById(R.id.btn2);
        btn3=findViewById(R.id.btn3);
  
    }
  
    public void BTN1(View v){
        AlertDialog alert1=new AlertDialog.Builder(MainActivity.this).create();
  
        alert1.setTitle("Alert Dialog 1");
        alert1.setMessage("Alert Dialog with 1 Button");
  
        alert1.setButton(Dialog.BUTTON_NEGATIVE,"Yes", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                Toast.makeText(MainActivity.this,"Yes Clicked",Toast.LENGTH_SHORT).show();
            }
        });
  
        alert1.show();
    }
  
    public void BTN2(View v){
        AlertDialog.Builder alert2=new AlertDialog.Builder(MainActivity.this);
  
        alert2.setTitle("Alert Dialog 2");
        alert2.setMessage("Alert Dialog with 2 Buttons");
  
        alert2.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                Toast.makeText(MainActivity.this,"Yes Clicked",Toast.LENGTH_SHORT).show();
            }
        });
  
        alert2.setNegativeButton("No", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this,"No Clicked",Toast.LENGTH_SHORT).show();
            }
        });
  
        alert2.show();
    }
  
    public void BTN3(View v){
  
        AlertDialog.Builder alert3=new AlertDialog.Builder(MainActivity.this);
  
        alert3.setTitle("Alert Dialog 3");
        alert3.setMessage("Alert Dialog with 3 buttons");
  
        alert3.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialogInterface, int i) {
                Toast.makeText(MainActivity.this,"Yes Clicked",Toast.LENGTH_SHORT).show();
                MainActivity.super.onBackPressed();
            }
        });
  
        alert3.setNegativeButton("No", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this,"No Clicked",Toast.LENGTH_SHORT).show();
            }
        });
  
        alert3.setNeutralButton("Cancel", new DialogInterface.OnClickListener() {
            @Override
            public void onClick(DialogInterface dialog, int which) {
                Toast.makeText(MainActivity.this,"Cancel Clicked",Toast.LENGTH_SHORT).show();
            }
        });
  
        alert3.show();
  
    }
}