Apps/Applications Articles

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How to use AutoCompleteTextView in an Android App using Kotlin?

Azhar
Azhar
Updated on 30-Nov-2020 1K+ Views

This example demonstrates how to use AutoCompleteTextView 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.         Step 3 − Add the following code to src/MainActivity.ktimport android.os.Bundle import android.widget.ArrayAdapter import android.widget.AutoCompleteTextView import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() {    private val fruits = arrayOf("Apple", "Banana", "Cherry", "Date", "Grape", "Kiwi", "Mango", "Pear")    override fun onCreate(savedInstanceState: Bundle?) {       super.onCreate(savedInstanceState)       setContentView(R.layout.activity_main)   ...

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How to pickup & hangup calls in Android using Kotlin?

Azhar
Azhar
Updated on 30-Nov-2020 397 Views

This example demonstrates how to pickup & hangup calls 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.Manifest import android.content.BroadcastReceiver import android.content.Context import android.content.Intent import 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)     ...

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How to set margins in an Android LinearLayout programmatically using Kotlin?

Azhar
Azhar
Updated on 30-Nov-2020 3K+ Views

This example demonstrates how to set margins in an Android LinearLayout programmatically 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.Gravity import android.widget.Button import android.widget.RelativeLayout import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() {    override fun onCreate(savedInstanceState: Bundle?) {       super.onCreate(savedInstanceState)       setContentView(R.layout.activity_main)       title = "KotlinApp"       val relativeLayout: RelativeLayout = ...

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How to detect click on HTML button through javascript in Android WebView using Kotlin?

Azhar
Azhar
Updated on 30-Nov-2020 1K+ Views

This example demonstrates how to detect click on HTML buttons through javascript in Android WebView using Kotlin.This example demonstrates how to detect click on HTML buttons through javascript in Android WebView 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 an asset folder and create a file.htm and add the following code − First name: Last name:    function getValues() { ...

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How to make a phone call using intent in Android using Kotlin?

Azhar
Azhar
Updated on 30-Nov-2020 4K+ Views

This example demonstrates how to make a phone call using intent 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.content.Intent import android.net.Uri import android.os.Bundle import android.view.View import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() {    override fun onCreate(savedInstanceState: Bundle?) {       super.onCreate(savedInstanceState)       setContentView(R.layout.activity_main)       title = "KotlinApp"    }    fun ...

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How to change a TextView's style at runtime in Android using Kotlin?

Azhar
Azhar
Updated on 30-Nov-2020 3K+ Views

This example demonstrates how to change a TextView's style at runtime 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 in res/values/styles.xml           bold|italic       #FFFFFF               normal       #C0C0C0     Step 4 − Add the following code in res/values/colors.xml    @android:color/holo_green_light    @android:color/holo_red_dark Step ...

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How to send a notification from a service in Android using Kotlin?

Azhar
Azhar
Updated on 30-Nov-2020 2K+ Views

This example demonstrates how to send a notification from a service 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.content.Intent import android.os.Bundle import android.view.View import android.widget.EditText import androidx.appcompat.app.AppCompatActivity import androidx.core.content.ContextCompat class MainActivity : AppCompatActivity() {    lateinit var editText: EditText    override fun onCreate(savedInstanceState: Bundle?) {       super.onCreate(savedInstanceState)       setContentView(R.layout.activity_main)   ...

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How to disable GridView scrolling in Android using Kotlin?

Azhar
Azhar
Updated on 30-Nov-2020 382 Views

This example demonstrates how to disable GridView scrolling 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.content.Context import android.os.Bundle import android.view.MotionEvent import android.view.View import android.view.ViewGroup import android.widget.* import androidx.appcompat.app.AppCompatActivity class MainActivity : AppCompatActivity() {    private lateinit var gridView: GridView       var imageIDs = arrayOf(          R.drawable.ronaldo,          R.drawable.andre, ...

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How to use Android Picasso library to download images using Kotlin?

Azhar
Azhar
Updated on 30-Nov-2020 635 Views

This example demonstrates how to use the Android Picasso library to download images 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.Add the following dependency to the build gradle (Module: app)implementation 'com.squareup.picasso:picasso:2.4.0'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.ImageView import androidx.appcompat.app.AppCompatActivity import com.squareup.picasso.Picasso class MainActivity : AppCompatActivity() {    lateinit var imageView: ImageView    lateinit var btnDownload: Button    override fun onCreate(savedInstanceState: ...

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How to create a swipe refresh layout in Android using Kotlin?

Azhar
Azhar
Updated on 30-Nov-2020 4K+ Views

This example demonstrates how to create a swipe refresh layout 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 androidx.appcompat.app.AppCompatActivity import android.os.Bundle import android.os.Handler import android.widget.TextView import androidx.swiperefreshlayout.widget.SwipeRefreshLayout class MainActivity : AppCompatActivity() {    lateinit var swipeRefreshLayout: SwipeRefreshLayout    lateinit var textView: TextView    var number: Int = 0    override fun onCreate(savedInstanceState: Bundle?) {   ...

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