Android Alert Dialog Example with Positive, Negative and Natural Buttons in Android Studio

In this tutorial, we show you how to display an alert box in Android. See flowing Steps :

AlertDialog is a structure extended from Dialog that allows the user to see a popup image on the screen. We can show it as an information message to the user, or we can use the AlertDialog structure as an error message if we want.

Demo:

As you know Android AlertDialog is the subclass of Dialog class. So you can use Dialog class methods with AlertDialog.

Method	Description
public AlertDialog.Builder setTitle(CharSequence)	This method is used to set the title of AlertDialog.
public AlertDialog.Builder setMessage(CharSequence)	This method is used to set the message for AlertDialog.
public AlertDialog.Builder setIcon(int)	This method is used to set the icon over AlertDialog.

Android Alert Dialog Example

Step 1: Open the Android Studio IDE and Create a New Empty Activity. Name it similarly.

Step 2: Simple layout file, display a button on screen.

File : res/layout/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"
    tools:context=".MainActivity">

    <Button
        android:id="@+id/buttonAlert"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Show Alert Box"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

<?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"

tools:context=".MainActivity">

<Button

android:id="@+id/buttonAlert"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Show Alert Box"

app:layout_constraintBottom_toBottomOf="parent"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintStart_toStartOf="parent"

app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

Step 3: Step 3: Create an Intent to be shown in case of positive response.

Create a New Activity into App folder by right click. New → Activity → Empty Activity. Name as PositiveAnswer.


<?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"
    tools:context=".PositiveAnswer">

    <TextView
        android:id="@+id/textView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Positive Response"
        android:textSize="34sp"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />
</androidx.constraintlayout.widget.ConstraintLayout>

<?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"

tools:context=".PositiveAnswer">

<TextView

android:id="@+id/textView"

android:layout_width="wrap_content"

android:layout_height="wrap_content"

android:text="Positive Response"

android:textSize="34sp"

app:layout_constraintBottom_toBottomOf="parent"

app:layout_constraintEnd_toEndOf="parent"

app:layout_constraintStart_toStartOf="parent"

app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

Step 4: Let’s write the code to create and show the AlertDialog.

File: MainActivity.java


package com.example.alertdialogexample;

import androidx.appcompat.app.AppCompatActivity;

import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;

public class MainActivity extends AppCompatActivity {


    //Create button sample
    Button btnMessage;

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


        //Get the button view
        btnMessage = findViewById(R.id.buttonAlert);

        //set the button click
        btnMessage.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {

                //fire the alert dialog :)
                openAlert(view);
            }
        });


    }


    //Open Alert Dialog when the button clicked.
    private void openAlert(View view) {
        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(MainActivity.this);

        alertDialogBuilder.setTitle(this.getTitle()+ " Decision");
        alertDialogBuilder.setMessage("What do you want to?");

        // set Positive button
        alertDialogBuilder.setPositiveButton("Yees",new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog,int id) {

                // Create a new intent and open.
                Intent positveActivity = new Intent(getApplicationContext(),
                        PositiveAnswer.class);
                startActivity(positveActivity);
            }
        });

        // set Negative button
        alertDialogBuilder.setNegativeButton("Nooo",new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog,int id) {

                // when the dialog cancel, show the Toast message
                dialog.cancel();
                Toast.makeText(getApplicationContext(), "You canceled the decision",
                        Toast.LENGTH_LONG).show();
            }
        });

        // set neutral button
        alertDialogBuilder.setNeutralButton("Close APP",new DialogInterface.OnClickListener() {
            public void onClick(DialogInterface dialog,int id) {
                // Close the app
                MainActivity.this.finish();
            }
        });

        AlertDialog alertDialog = alertDialogBuilder.create();

        // Show the AlertDialog
        alertDialog.show();
    }


}

package com.example.alertdialogexample;

import androidx.appcompat.app.AppCompatActivity;

import android.app.AlertDialog;

import android.content.DialogInterface;

import android.content.Intent;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.Toast;

public class MainActivity extends AppCompatActivity {

//Create button sample

Button btnMessage;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

//Get the button view

btnMessage = findViewById(R.id.buttonAlert);

//set the button click

btnMessage.setOnClickListener(new View.OnClickListener() {

@Override

public void onClick(View view) {

//fire the alert dialog :)

openAlert(view);

}

});

}

//Open Alert Dialog when the button clicked.

private void openAlert(View view) {

AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(MainActivity.this);

alertDialogBuilder.setTitle(this.getTitle()+ " Decision");

alertDialogBuilder.setMessage("What do you want to?");

// set Positive button

alertDialogBuilder.setPositiveButton("Yees",new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog,int id) {

// Create a new intent and open.

Intent positveActivity = new Intent(getApplicationContext(),

PositiveAnswer.class);

startActivity(positveActivity);

}

});

// set Negative button

alertDialogBuilder.setNegativeButton("Nooo",new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog,int id) {

// when the dialog cancel, show the Toast message

dialog.cancel();

Toast.makeText(getApplicationContext(), "You canceled the decision",

Toast.LENGTH_LONG).show();

}

});

// set neutral button

alertDialogBuilder.setNeutralButton("Close APP",new DialogInterface.OnClickListener() {

public void onClick(DialogInterface dialog,int id) {

// Close the app

MainActivity.this.finish();

}

});

AlertDialog alertDialog = alertDialogBuilder.create();

// Show the AlertDialog

alertDialog.show();

}

Android Alert Dialog Example with Positive, Negative and Natural Buttons in Android Studio4 min read

Android Alert Dialog Example

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Android Alert Dialog Example

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