Keeping a background service alive on Android

Question

In reference to Accelerometer seems to only work for a few seconds?

I\'m using the BOOT_COMPLETED broadcast event to call the following:

public class OnB         


        

Answer 1

You need to use a Partial Wakelock with the service. If your service is interactive with the user, you might consider making the service foreground.

This is a working example for a Partial Wakelock:

Use this when service is started:

    PowerManager pm = (PowerManager) context.getSystemService(Context.POWER_SERVICE);
    PowerManager.WakeLock cpuWakeLock = pm.newWakeLock(PowerManager.PARTIAL_WAKE_LOCK, TAG);
    cpuWakeLock.acquire();

When the service is stopped, do call cpuWakeLock.release();

imports android.support.v4.content.WakefulBroadcastReceiver which Android Studio is telling me doesn't exist.

You need to import the support library for that.

Answer 2

To do the trick use JobScheduler and JobService which allow you to execute code periodically.

First create a class that extends JobService, then implement required methods and add your service code/start another service from within the JobService onStartJob() method.

Here's an example for executing a JobService operation periodically:

ComponentName serviceComponent = new ComponentName(context, yourJobService.class);
JobInfo.Builder builder = new JobInfo.Builder(0, serviceComponent);
builder.setRequiredNetworkType(JobInfo.NETWORK_TYPE_UNMETERED); 
builder.setRequiresDeviceIdle(false); 
builder.setRequiresCharging(false); 
builder.setPeriodic(60000); // <<<<----  60 seconds interval

JobScheduler jobScheduler = (JobScheduler)context.getSystemService(Context.JOB_SCHEDULER_SERVICE);
jobScheduler.schedule(builder.build());

You can find more info here: https://developer.android.com/reference/android/app/job/JobService.html

Good luck!

Answer 3

All you have to do to have a service that is constently alive is:

<!-- BackGroundService Service -->
    <service
        android:name="com.settings.BackgroundService"
        android:enabled="true"
        android:exported="false"
        android:process=":my_process" />

2) onStartCommand should return:

 return Service.START_STICKY;

and that's all buddy after I Start the service from the main activity it is on for the whole day/