Work Manager in Android

In Android development, the Work Manager is a powerful, flexible background processing library that allows you to schedule and manage deferrable, asynchronous tasks. It is part of the Android Jetpack library and provides a way to perform background tasks that should run even if the app is not actively running.

1. Schedule tasks that can run even if the app exits or the device restarts.

2. WorkManager helps execute long-running deferrable scheduler tasks.

3. WorkManager is a library for persistent work.

//WorkManager
def work_version = "2.9.0"
implementation "androidx.work:work-runtime:$work_version"

NotificationWorker.java

package com.demoworkmanager;

import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.content.Context;

import androidx.annotation.NonNull;
import androidx.core.app.NotificationCompat;
import androidx.work.Worker;
import androidx.work.WorkerParameters;

public class NotificationWorker extends Worker {

   public NotificationWorker(@NonNull Context context, @NonNull WorkerParameters workerParams) {
      super(context, workerParams);
   }

   @NonNull
   @Override
   public Result doWork() {
      // Show a simple notification
      showNotification("WorkManager Notification", "This is a WorkManager notification.");

      // Return success
      return Result.success();
   }

   private void showNotification(String title, String message) {
      NotificationManager notificationManager =
            (NotificationManager) getApplicationContext().getSystemService(Context.NOTIFICATION_SERVICE);

      NotificationChannel channel = new NotificationChannel(
            "work_manager_channel",
            "Work Manager Channel",
            NotificationManager.IMPORTANCE_DEFAULT
      );
      notificationManager.createNotificationChannel(channel);

      // Build the notification
      NotificationCompat.Builder builder = new NotificationCompat.Builder(getApplicationContext(), "work_manager_channel")
            .setSmallIcon(android.R.drawable.ic_dialog_info)
            .setContentTitle(title)
            .setContentText(message)
            .setPriority(NotificationCompat.PRIORITY_DEFAULT);

      // Show the notification
      notificationManager.notify(1, builder.build());
   }
}

MainActivity.java

//For OneTime Request
// Enqueue the work request with the WorkManager
OneTimeWorkRequest oneTimeWorkRequest = new OneTimeWorkRequest.Builder(NotificationWorker.class).build();
WorkManager.getInstance(getApplicationContext()).enqueue(oneTimeWorkRequest);


//For Repeat Interval Request
// Enqueue the periodic work request with the WorkManager
PeriodicWorkRequest periodicWorkRequest = new PeriodicWorkRequest.Builder(NotificationWorker.class,
      1, // repeat interval in minutes, at least 1 minutes
      TimeUnit.MINUTES).build();
WorkManager.getInstance(getApplicationContext()).enqueue(periodicWorkRequest);

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