How to execute jobs sequentially using Android WorkManager

In this android programming source code example, we are going to execute jobs sequentially using Android WorkManager.

You can copy and adopt this source code example to your android project without reinventing the wheel.

Below is a step by step source code to execute jobs sequentially using Android WorkManager.

activity_main.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:layout_width="match_parent"
    android:layout_height="match_parent"
    tools:context=".WorkManagerAndJobSchedule.WorkManagerAndJobScheduleActivity9">

    <Button
        android:id="@+id/schedule"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:background="@color/colorAccent"
        android:text="Schedule Sequent Work"
        android:textAllCaps="false"
        android:textColor="#ffffff"
        android:textSize="19sp"
        android:layout_marginStart="10dp"
        android:layout_marginEnd="10dp"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"/>

</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.java

import androidx.appcompat.app.AppCompatActivity;
import androidx.work.OneTimeWorkRequest;
import androidx.work.WorkContinuation;
import androidx.work.WorkManager;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;


import java.util.concurrent.TimeUnit;

public class WorkManagerAndJobScheduleActivity9 extends AppCompatActivity {
    private Button schedule;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_work_manager_and_job_schedule9);
        schedule = (Button) findViewById(R.id.schedule);
        schedule.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startWork();
            }
        });
    }

    private void startWork() {
        OneTimeWorkRequest oneTimeWorkRequest = new OneTimeWorkRequest.Builder(WorkManager9.class)
                .setInitialDelay(2, TimeUnit.SECONDS).build();

        OneTimeWorkRequest secondoneTimeWorkRequest = new OneTimeWorkRequest.Builder(WorkManager91.class)
                .setInitialDelay(3, TimeUnit.SECONDS).build();

        WorkContinuation workContinuation = WorkManager.getInstance(this).beginWith(oneTimeWorkRequest);
        workContinuation.then(secondoneTimeWorkRequest)
                .enqueue();
    }
}

WorkManager9.java

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

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


public class WorkManager9 extends Worker {
    public WorkManager9(@NonNull Context context, @NonNull WorkerParameters workerParams) {
        super(context, workerParams);
    }

    @NonNull
    @Override
    public Result doWork() {
        showNotification("Inducesmile", "First worker completed");
        return Result.success();
    }

    private void showNotification(String title, String task){
        NotificationManager notificationManager = (NotificationManager) getApplicationContext().getSystemService(Context.NOTIFICATION_SERVICE);
        if(Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O){
            NotificationChannel notificationChannel = new NotificationChannel("inducesmile", "inducesmile", NotificationManager.IMPORTANCE_DEFAULT);
            notificationManager.createNotificationChannel(notificationChannel);
        }
        NotificationCompat.Builder notification = new NotificationCompat.Builder(getApplicationContext(),"inducesmile")
                .setContentTitle(title)
                .setContentText(task)
                .setSmallIcon(R.mipmap.ic_launcher);
        notificationManager.notify(1, notification.build());
    }
}

WorkManager91.java

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

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


public class WorkManager91 extends Worker {
    public WorkManager91(@NonNull Context context, @NonNull WorkerParameters workerParams) {
        super(context, workerParams);
    }

    @NonNull
    @Override
    public Result doWork() {
        showNotification("Inducesmile", "Second worker completed");
        return Result.success();
    }

    private void showNotification(String title, String task){
        NotificationManager notificationManager = (NotificationManager) getApplicationContext().getSystemService(Context.NOTIFICATION_SERVICE);
        if(Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.O){
            NotificationChannel notificationChannel = new NotificationChannel("inducesmile", "inducesmile", NotificationManager.IMPORTANCE_DEFAULT);
            notificationManager.createNotificationChannel(notificationChannel);
        }
        NotificationCompat.Builder notification = new NotificationCompat.Builder(getApplicationContext(),"inducesmile")
                .setContentTitle(title)
                .setContentText(task)
                .setSmallIcon(R.mipmap.ic_launcher);
        notificationManager.notify(1, notification.build());
    }
}

app/build.gradle

implementation 'androidx.work:work-runtime:2.1.0-beta02'

If you have any question or suggestions kindly use the comment box or you can contact us directly through our contact page below.

Add a Comment

This site uses Akismet to reduce spam. Learn how your comment data is processed.