How to use setOutputData and setInputData in Android WorkManager

In this android programming source code example, we are going to use setOutputData and setInputData in 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 use setOutputData and setInputData in 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.WorkManagerAndJobScheduleActivity8">

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical"
        app:layout_constraintTop_toTopOf="parent"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintEnd_toEndOf="parent"
        android:layout_marginStart="10dp"
        android:layout_marginEnd="10dp">

        <TextView
            android:id="@+id/tvdata"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:layout_gravity="center_horizontal"
            android:text="Empty Data..."
            android:textColor="#000000"
            android:textSize="19sp"/>

        <Button
            android:id="@+id/schedule"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:background="@color/colorAccent"
            android:text="Schedule Notification"
            android:textAllCaps="false"
            android:textColor="#ffffff"
            android:textSize="19sp"
            android:layout_marginTop="10dp"/>

    </LinearLayout>

</androidx.constraintlayout.widget.ConstraintLayout>

MainActivity.java

import androidx.appcompat.app.AppCompatActivity;
import androidx.lifecycle.Observer;
import androidx.work.Data;
import androidx.work.OneTimeWorkRequest;
import androidx.work.WorkInfo;
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 WorkManagerAndJobScheduleActivity8 extends AppCompatActivity {
    private TextView tvdata;
    private Button schedule;
    private OneTimeWorkRequest oneTimeWorkRequest;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_work_manager_and_job_schedule8);
        tvdata = (TextView) findViewById(R.id.tvdata);
        schedule = (Button) findViewById(R.id.schedule);
        oneTimeWorkRequest = new OneTimeWorkRequest.Builder(WorkManager8.class)
                .setInputData(createInputData("Inducesmile","Hello world, work completed on time"))
                .setInitialDelay(10, TimeUnit.SECONDS).build();

        WorkManager.getInstance(this).getWorkInfoByIdLiveData(oneTimeWorkRequest.getId())
                .observe(this, new Observer<WorkInfo>() {
                    @Override
                    public void onChanged(WorkInfo workInfo) {
                        if(workInfo != null &&  workInfo.getState().isFinished()){
                            tvdata.setText(workInfo.getOutputData().getString("data"));
                        }
                    }
                });

        schedule.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                startWork();
            }
        });
    }

    private void startWork(){
        WorkManager.getInstance(this).enqueue(oneTimeWorkRequest);
    }

    private Data createInputData(String title, String message){
        Data data = new Data.Builder()
                .putString("title", title)
                .putString("message", message)
                .build();
        return data;
    }
}

WorkManager8.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.Data;
import androidx.work.Worker;
import androidx.work.WorkerParameters;

public class WorkManager8 extends Worker {
    private Data outputData;
    public WorkManager8(@NonNull Context context, @NonNull WorkerParameters workerParams) {
        super(context, workerParams);
    }

    @NonNull
    @Override
    public Result doWork() {
        outputData = new Data.Builder()
                .putString("data", "Hello world, work completed on time")
                .build();
        String title = getInputData().getString("title");
        String message = getInputData().getString("message");
        showNotification(title, message);
        return Result.success(outputData);
    }

    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'

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