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Articles on Trending Technologies
Technical articles with clear explanations and examples
How to check the amount of RAM to be used by an Android App using Kotlin?
This example demonstrates how to create a smooth image rotation 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.Example Step 3 − Add the following code to src/MainActivity.ktExampleimport android.app.ActivityManager import android.content.Context import android.os.Bundle import android.widget.TextView import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { private lateinit var textView: TextView override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) title = "KotlinApp" ...
Read MoreHow to create a smooth image rotation in Android using Kotlin?
This example demonstrates how to create a smooth image rotation 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.Example Step 3 − Add the following code to src/MainActivity.ktExampleimport android.os.Bundle import android.view.animation.AnimationUtils import android.widget.Button import android.widget.ImageView import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { lateinit var imageView: ImageView lateinit var button: Button override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) ...
Read MoreHow to convert a Bitmap to Drawable in Kotlin?
This example demonstrates how to convert a Bitmap to Drawable 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.Example Step 3 − Add the following code to src/MainActivity.ktExampleimport android.graphics.Bitmap import android.graphics.drawable.BitmapDrawable import android.graphics.drawable.Drawable import android.os.Bundle import android.widget.Button import android.widget.ImageView import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { lateinit var imageView: ImageView lateinit var button: Button lateinit var bitmap: Bitmap lateinit var drawable: Drawable override fun onCreate(savedInstanceState: ...
Read MoreHow to add Google Search Functionality in an Android App using Kotlin?
This example demonstrates how to add Google Search Functionality in an Android App 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.Example Step 3 − Add the following code to src/MainActivity.ktExampleimport android.app.SearchManager import android.content.Intent import android.os.Bundle import android.widget.Button import android.widget.EditText import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { lateinit var editText: EditText lateinit var btnSearch: Button override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) ...
Read MoreHow to get the differences between two dates in Android using Kotlin?
This example demonstrates how to create a simple alert dialog with Ok and cancel buttons 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.Example Step 3 − Add the following code to src/MainActivity.ktExampleimport android.os.Bundle import android.widget.TextView import androidx.appcompat.app.AppCompatActivity import java.text.SimpleDateFormat import java.util.* import kotlin.math.abs class MainActivity : AppCompatActivity() { lateinit var textView: TextView override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) ...
Read MoreHow to create a simple alert dialog with Ok and cancel buttons using Kotlin?
This example demonstrates how to create a simple alert dialog with Ok and cancel buttons 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.Example Step 3 − Add the following code to src/MainActivity.ktExampleimport android.os.Bundle import android.widget.TextView import android.widget.Toast import androidx.appcompat.app.AlertDialog import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { private lateinit var textView: TextView override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) ...
Read MoreHow to request Location Permission at runtime on Kotlin?
This example demonstrates how to request Location Permission at runtime on 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.Example Step 3 − Add the following code to src/MainActivity.ktExampleimport android.content.pm.PackageManager import androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.widget.Toast import androidx.core.app.ActivityCompat import androidx.core.content.ContextCompat class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) title = "KotlinApp" if (ContextCompat.checkSelfPermission(this@MainActivity, ...
Read MoreHow to change the background color of ListView items on Android Kotlin?
This example demonstrates how to change the background color of ListView items 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.Example Step 3 − Add the following code to src/MainActivity.ktExampleimport android.graphics.Color import android.os.Build import android.os.Bundle import android.widget.* import android.widget.AdapterView.OnItemClickListener import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { var list = arrayOf( "Android", "IPhone", "WindowsMobile", "Blackberry", "WebOS", "Ubuntu", "Windows7", "Max OS X" ) override ...
Read MoreHow to add new contacts in Android App using Kotlin?
This example demonstrates how to determine if network type (2G, 3G or 4G) in 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.Example Step 3 − Add the following code to src/MainActivity.ktExampleimport android.app.Activity import android.content.Intent import android.os.Bundle import android.provider.ContactsContract import android.view.View import android.widget.EditText import android.widget.Toast import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) ...
Read MoreHow to get a working vertical SeekBar in Android using Kotlin?
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.Example Step 3 − Add the following code to src/MainActivity.ktExampleimport android.os.Bundle import android.widget.SeekBar import android.widget.SeekBar.OnSeekBarChangeListener import android.widget.TextView import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() { lateinit var seekBar: SeekBar lateinit var textView: TextView var min = 0 var max: Int = 100 var current: Int ...
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