This example demonstrates how to  get Value of a Edit Text field in Android 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.ktimport android.os.Bundle import android.widget.Button import android.widget.EditText import android.widget.TextView import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() {    lateinit var button: Button    lateinit var editText: EditText    lateinit var string: String    lateinit var textView: ... Read More

This example demonstrates how to find the latitude and longitude from address on Android 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.ktimport android.os.Bundle import android.os.Handler import android.os.Message import android.widget.Button import android.widget.EditText import android.widget.TextView import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() {    private lateinit var addressButton: Button    private lateinit var textViewAddress: TextView    lateinit var ... Read More

This example demonstrates how to add a footer in Android ListView using KotlinStep 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.ktimport android.os.Bundle import android.view.ViewGroup import android.widget.ArrayAdapter import android.widget.ListView import androidx.appcompat.app.AppCompatActivity import java.util.* class MainActivity : AppCompatActivity() {    private lateinit var listView: ListView    var country = arrayOf(       "India",       "Australia",       "South Africa", ... Read More

This example demonstrates how to Subscript and Superscript a String in Android using KotlinStep 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.ktimport android.os.Bundle import android.text.SpannableStringBuilder import android.text.Spanned import android.text.style.RelativeSizeSpan import android.text.style.SubscriptSpan import android.text.style.SuperscriptSpan import android.widget.TextView import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() {    lateinit var textView: TextView    private lateinit var strText: String    lateinit var spannableStringBuilder: SpannableStringBuilder    override fun ... Read More

This example demonstrates how to get a complete address from latitude and longitude on Android 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.ktimport android.content.Intent import android.content.pm.PackageManager import android.location.Location import android.location.LocationManager import android.os.Bundle import android.os.Handler import android.os.Message import android.provider.Settings import android.widget.Button import android.widget.TextView import android.widget.Toast import androidx.appcompat.app.AlertDialog import androidx.appcompat.app.AppCompatActivity import androidx.core.app.ActivityCompat import androidx.core.content.ContextCompat class MainActivity : AppCompatActivity() {   ... Read More

This example demonstrates how to Play an arbitrary tone in Android using KotlinStep 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.ktimport android.media.AudioFormat import android.media.AudioManager import android.media.AudioTrack import android.os.Bundle import android.os.Handler import androidx.appcompat.app.AppCompatActivity import kotlin.experimental.and import kotlin.math.sin class MainActivity : AppCompatActivity() {    private val duration = 10    private val sampleRate = 8000    private val numSamples = duration * sampleRate ... Read More

This example demonstrates how to develop a soft keyboard for Android 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.ktimport android.os.Bundle import android.view.View import android.widget.EditText import android.widget.TextView import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() {    lateinit var editText: EditText    lateinit var textView: TextView    override fun onCreate(savedInstanceState: Bundle?) {       super.onCreate(savedInstanceState)       ... Read More

This example demonstrates how to find the serial number of an Android device 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.ktimport android.Manifest import android.app.AlertDialog import android.content.Context import android.content.pm.PackageManager import android.os.Build import android.os.Bundle import android.telephony.TelephonyManager import android.view.View import android.widget.Toast import androidx.appcompat.app.AppCompatActivity import androidx.core.content.ContextCompat class MainActivity : AppCompatActivity() {    private val requestState = 100    private var checkedPermission ... Read More

This example demonstrates how to hide a soft keyboard on android after clicking outside EditText 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.ktimport android.content.Context import android.os.Bundle import android.view.View import android.view.inputmethod.InputMethodManager import android.widget.EditText import android.widget.TextView import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() {    lateinit var editText: EditText    lateinit var textView: TextView    override fun onCreate(savedInstanceState: Bundle?) { ... Read More

This example demonstrates how to display count of notifications in the Android App launcher 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.ktimport android.app.NotificationChannel import android.app.NotificationManager import android.app.PendingIntent import android.content.Context import android.content.Intent import android.os.Build import android.os.Bundle import android.view.View import androidx.appcompat.app.AppCompatActivity import androidx.core.app.NotificationCompat class MainActivity : AppCompatActivity() {    var count = 0    private val channelId = "10001"    private ... Read More