Android progress notifications in Kotlin Last Updated : 05 Feb, 2025 Comments Improve Suggest changes Like Article Like Report In this tutorial you'll learn how to create a basic Progress Notification (Indeterminate progress indicator and Fixed-duration progress indicator) for Android using Kotlin. Before we begin, let us first understand the components of a Notification in Android. Components of a Notification:Small Icon - Required, can be set with setSmallIcon().Application Name - Provided by the system.Time Stamp - Provided by the system but can be overridden.Large Icon - Optional, can be set with setLargeIcon().Title - Optional, can be set with setContentTitle().Text - Optional, can be set with setContentText().Note : Since the introduction of Android version 8 (Android Oreo), it is now compulsory to categorize all the notifications into categories called Notification Channels. This is for the convenience of users and also developers. The image below shows us a notification channel named 'Progress Notification'. Step by Step Implementation:Step 1: Create a New ProjectTo create a new project in Android Studio please refer to How to Create/Start a New Project in Android Studio. Note that select Kotlin as the programming language. Choose the API level according to your choice( Here we have chosen API Level 26).Step 2:Adding Permission for notification Android 13 (API level 33) and higher need a permission for posting notifications from an app. For this, declare permission in the manifest file. Please manually make sure that the permission for notifications is provided for this app on phone.<uses-permission android:name="android.permission.POST_NOTIFICATIONS"/>Step 3: Working with the activity_main.xml fileGo to the activity_main.xml file and refer to the following code. We are just going to add a basic button to trigger the notification.activity_main.xml: XML <?xml version="1.0" encoding="utf-8"?> <androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" android:id="@+id/main" android:layout_width="match_parent" android:layout_height="match_parent" android:background="@color/white" tools:context=".MainActivity"> <!-- Button for sending notification--> <Button android:id="@+id/button" android:layout_width="wrap_content" android:layout_height="wrap_content" android:backgroundTint="@color/green" android:text="Send Notification" android:textSize="24sp" app:layout_constraintBottom_toBottomOf="parent" app:layout_constraintEnd_toEndOf="parent" app:layout_constraintStart_toStartOf="parent" app:layout_constraintTop_toTopOf="parent" /> </androidx.constraintlayout.widget.ConstraintLayout> Step 4: Working with the MainActivity.kt fileGo to the MainActivity.kt file and refer to the following code. Below is the code for the MainActivity.kt file. Comments are added inside the code to understand the code in more detail.MainActivity.kt: Java package org.geeksforgeeks.demo import android.Manifest import android.annotation.SuppressLint import android.app.NotificationChannel import android.app.NotificationManager import android.app.PendingIntent import android.content.Context import android.content.Intent import android.content.pm.PackageManager import android.graphics.Bitmap import android.graphics.BitmapFactory import android.graphics.Color import android.os.Build import android.os.Bundle import android.os.SystemClock import android.widget.Button import androidx.appcompat.app.AppCompatActivity import androidx.core.app.ActivityCompat import androidx.core.app.NotificationCompat import androidx.core.app.NotificationManagerCompat class MainActivity : AppCompatActivity() { private lateinit var button: Button private lateinit var notificationManager: NotificationManagerCompat override fun onCreate(savedInstanceState: Bundle?) { super.onCreate(savedInstanceState) setContentView(R.layout.activity_main) button = findViewById(R.id.button) notificationManager = NotificationManagerCompat.from(this) // Create a notification channel (required for Android 8.0 and higher) createNotificationChannel() button.setOnClickListener { // Request runtime permission for notifications on Android 13 and higher if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.TIRAMISU) { if (ActivityCompat.checkSelfPermission( this, Manifest.permission.POST_NOTIFICATIONS ) != PackageManager.PERMISSION_GRANTED ) { ActivityCompat.requestPermissions( this, arrayOf(Manifest.permission.POST_NOTIFICATIONS), 101 ) return@setOnClickListener } } sendNotification() // Trigger the notification } } /** * Create a notification channel for devices running Android 8.0 or higher. * A channel groups notifications with similar behavior. */ private fun createNotificationChannel() { if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) { val notificationChannel = NotificationChannel( CHANNEL_ID, CHANNEL_NAME, NotificationManager.IMPORTANCE_HIGH ) val notificationManager = getSystemService(Context.NOTIFICATION_SERVICE) as NotificationManager notificationManager.createNotificationChannel(notificationChannel) } } /** * Build and send a notification with a custom layout and action. */ @SuppressLint("MissingPermission") private fun sendNotification() { val intent = Intent(this, MainActivity::class.java) .apply { flags = Intent.FLAG_ACTIVITY_NEW_TASK or Intent.FLAG_ACTIVITY_CLEAR_TASK } val pendingIntent: PendingIntent = PendingIntent.getActivity( this, 0, intent, PendingIntent.FLAG_IMMUTABLE ) //Sets the maximum progress as 100 val progressMax = 100 // Build the notification val builder = NotificationCompat.Builder(this, CHANNEL_ID) .setSmallIcon(R.drawable.gfg_logo) // Notification icon .setContentTitle("GeeksforGeeks") // Title displayed in the notification .setContentText("Downloading...") // Text displayed in the notification .setAutoCancel(true) // Dismiss notification when tapped .setPriority(NotificationCompat.PRIORITY_HIGH) // Notification priority for better visibility .setOngoing(true) .setOnlyAlertOnce(true) .setProgress(progressMax, 0, true) .setContentIntent(pendingIntent) .setAutoCancel(true) // Display the notification notificationManager.notify(NOTIFICATION_ID, builder.build()) Thread(Runnable{ SystemClock.sleep(2000) var progress = 0 while (progress <= progressMax) { SystemClock.sleep( 1000 ) progress += 7 //Use this to make it a Fixed-duration progress indicator notification builder.setContentText("$progress%") .setProgress(progressMax, progress, false) notificationManager.notify(1, builder.build()) } builder.setContentText("Download complete") .setProgress(0, 0, false) .setOngoing(false) notificationManager.notify(1, builder.build()) }).start() } companion object { // Unique channel ID for notifications const val CHANNEL_ID = "i.apps.notifications" // Unique identifier for the notification const val NOTIFICATION_ID = 1234 // Description for the notification channel const val CHANNEL_NAME = "Test notification" } } Output: Comment More infoAdvertise with us Next Article Android progress notifications in Kotlin K Kiza Follow Improve Article Tags : Kotlin Android Kotlin Android Similar Reads Kotlin Tutorial This Kotlin tutorial is designed for beginners as well as professional, which covers basic and advanced concepts of Kotlin programming language. 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