How To Add Android Exit Dialog To Android App Using Android Studio

Introduction

Android is one of the most popular operating systems for mobile. In this article, I will show you how to add Android Exit Dialog to Android App using Android Studio

Requirements

• Android Studio version 2.3.3
• Little bit XML and JAVA knowledge.
• Android Emulator (or) Android mobile
• Download link (Android Studio)

Steps to be followed -

Follow these steps to add Android Exit Dialog to Android App. I have included the source code in the attachment.

Step 1

Open Android Studio and start a new Android Studio Project.

Step 2

You can choose your application name and location where your project is stored. If you wish to use C++ for coding the project, mark the "Include C++ support" box, and click "Next" button.



Now, select the version of Android and select the target Android devices.

Step 3

Now, add the activity and click "Next" button.



Add the Activity name and click "Finish".

Step 4

Go to activity_main.xml. This XML file contains the designing code for your Android app.



The XML code is given below.

<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.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="abu.exitnotification.MainActivity">

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="EXIT NOTIFICATION APP!"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</android.support.constraint.ConstraintLayout>

Step 5

Go to  Main Activity.java. This Java program is the back-end language for your Android app.



The Java code is given below.

package abu.exitnotification;

import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.app.AlertDialog;
import android.content.DialogInterface;

public class MainActivity extends AppCompatActivity {

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

        AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
        builder.setTitle(R.string.app_name);
        builder.setIcon(R.mipmap.ic_launcher);
        builder.setMessage("Do you want to exit?")
                .setCancelable(false)
                .setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        finish();
                    }
                })
                .setNegativeButton("No", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int id) {
                        dialog.cancel();
                    }
                });
        AlertDialog alert = builder.create();
        alert.show();

    }
}

Step 6

Now, go to menu bar and click "Make Project" or press ctrl+f9 in order to debug the app from errors.

Step 7

Then, click "Run" button or press shift+f10 to run the project. Select "virtual machine" and click OK.



Conclusion

We have successfully added Android Exit Dialog to the Android App.