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This example demonstrates how to Send an Intent to browser to open specific URL 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.Example Step 3 − Add the following code to src/MainActivity.ktExampleimport android.content.Intent import android.net.Uri import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.view.View class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) title = "KotlinApp" } ... Read More
This example demonstrates how to validate an e-mail address 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.kt import android.import android.os.Bundle import android.view.View import android.widget.EditText import android.widget.Toast import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { private lateinit var editText: EditText private lateinit var email: String private val emailPattern = "[a-zA-Z0-9._-]+@[a-z]+\.+[a-z]+" override fun onCreate(savedInstanceState: ... Read More
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