This example demonstrates how to get all checked items in listView using Kotlin.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml.                             Step 3 − Create a java class (CustomAdapter.kt) and the following codepackage app.com.myapplication import android.content.Context import android.view.LayoutInflater import android.view.View import android.view.ViewGroup import android.widget.BaseAdapter import android.widget.CheckBox import android.widget.TextView import android.widget.Toast class CustomAdapter(private val context: Context, private var modelArrayList: ArrayList) : ... Read More

This example demonstrates how to listen for volume buttons in Android background service using kotlin.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 - Add the following code to res/layout/activity_main.xml.     Step 3 − Add the following code to src/MainActivity.ktpackage app.com.kotlinapp import android.os.Bundle import android.os.Handler import android.provider.Settings import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() {    private lateinit var settingsContentObserver: SettingsContentObserver    override fun onCreate(savedInstanceState: Bundle?) {       super.onCreate(savedInstanceState)       setContentView(R.layout.activity_main)       settingsContentObserver ... Read More

This example demonstrates how to play sound using SoundPool in Kotlin.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. Step 3 − Create a new Android Resource folder (raw) and copy-paste your sound file in the res/raw/filename.mp3 as shown below −Step 4 − Add the following code to src/MainActivity.ktpackage app.com.myapplication import android.media.AudioManager import android.media.SoundPool import android.os.Bundle import android.view.View import android.widget.Toast import androidx.appcompat.app.AppCompatActivity @Suppress("DEPRECATION") class MainActivity : AppCompatActivity() {    private var ... Read More

Facial RecognitionFacial recognition is a technique in which a person is identified using his/her face. The system captures the facial expression details, analyzes and compares with an existing database of known faces to find a match. The face detection process helps to locate people in images and videos.Face IDFace ID is an advanced face recognition technology first unveiled in iPhone X. Face ID is very reliable and advanced biometric technology used in iPhones.The following are some of the important differences between Facial Recognition and Face ID.Sr. No.KeyFacial RecognitionFace ID1DefinitionFacial Recognition is a software application that is capable of verifying a ... Read More

Both Substitution Cipher and Transposition Cipher are traditional techniques used in cryptography to encrypt a plaintext into ciphertext in order to prevent it from getting tampered. Read through this article to find out more about Substitution cipher and Transposition cipher and how they are different from each other.What is Substitution Cipher Technique?In the Substitution Cipher technique, each character is substituted with other character/number or other symbol. This technique changes the identity of a character but not its position in the string.A substitution cipher encrypts a text sequence by replacing letters or units of text with other letters or units of ... Read More

The world has been chatting; sharing all the way from the day Facebook has entered the digital world. Then came the biggest revolution of WhatsApp, which has taken the world by surprise when it made easy for users by removing the registration process and made texting a daily habit replacing SMS. Sharing your favorite pictures, videos just through a click from your mobile or tablet has become a pastime for many. This was indeed a digital revolution when it comes to social networking.Moments turn into memories when there are dear ones around. As it is said, maybe in distance but ... Read More

You see them here, there, on the pathways, on the streets, across bridges, inside parks, inside shopping malls between buildings, behind parking lots, and basically anywhere outdoors imaginable. It seems as if the world has been invaded by a huge fleet of ‘Pokemon Go Zombies’ or more generally called ‘Pokemon-goers’.What’s all the Fuss about?Despite mixed reviews and a tad bit of criticism from game critics, Pokemon Go has become quite a phenomenon since its release on the 6th of July, 2016. It is basically a game that makes the use of the GPS and the Camera of any Android or ... Read More

Do you know how to download APK (Android packaging kit) files from Google Play store on Linux? One of the easiest way is to install APK on Android mobile for downloading APK files from Google Play Store to Hard Disk and install them on the Android device manually.There are several ways to download APK file(s) on Linux. One of the most used ways is via an open-source Linux software called GooglePlayDownloader. It works on python based GUI. It enables you to search and download APK files from Google play store. This article gives information about, how to install GooglePlayDownloader and ... Read More

Smartphones have become inseparable parts of our lives as we tend to perform a whole lot of tasks every day with our smartphones such as sending messages, watching videos, listening to music and other audio content and checking emails. According to a report by TouchPoints, a cross-media, cross-device planning tool targeted at the communications industry, 2.1 billion people worldwide own a smartphone.This report further adds that smartphone owners in the age group of 15-24 use their smartphone almost every other minute. Obviously, mobile devices are going to suffer huge attention and a lot of developments are going to take place ... Read More

Alto – Email Organized for youAlto organizes your email into Cards and Stacks and highlights important emails, messages, and information setting all that junk out of your view.What it does?Organizes your inbox into Cards and Stacks, enabling you to distinguish between important emails, snoozed emails, messages with files, or photos all arranged categorically. Stacks let you divide them into unread, starred, shopping, travel, finance, work, personal and social emails. Custom stacks file each category as you like it.This app syncs with your Dashboard and Calendar and displays all the emails, messages you wish to see, it figures out your email ... Read More