CODEWITHSUNDEEP
android
Chud37
Chud37

Reputation: 5027

Check if a service is already running

I have a service that starts in my Application class in my android app.

The service runs every hour, and I do not want it to start every time the app is opened, which seems to be what its doing now. I want to check if it is running, and if it isnt, then run it.

I found this code in another answer that I thought would work, but if I run the app twice I still get the message 'Service is not running, Job Scheduled' from the below code:

public class App extends Application {

    public static final String TAG = "Application";
    public static final int JOB_NUMBER = 3007;

    @Override
    public void onCreate() {
        super.onCreate();
        if(!isMyServiceRunning(DevotionalService.class)) {
            ComponentName componentName = new ComponentName(this, DevotionalService.class);
            JobInfo info = new JobInfo.Builder(JOB_NUMBER, componentName)
                    .setRequiresCharging(false)
                    .setRequiredNetworkType(JobInfo.NETWORK_TYPE_UNMETERED)
                    .setPersisted(true)
                    .setPeriodic(60 * 60 * 1000)
                    .build();
            JobScheduler scheduler = (JobScheduler) getSystemService(JOB_SCHEDULER_SERVICE);
            int resultCode = scheduler.schedule(info);
            if (resultCode == JobScheduler.RESULT_SUCCESS) {
                Log.d(TAG, "Service is not running, Job Scheduled.");
            } else {
                Log.d(TAG, "Service is not running, However job scheduling failed.");
            }
        } else {
            Log.d(TAG, "Service is already running.");
        }
    }

    private boolean isMyServiceRunning(Class<?> serviceClass) {
        ActivityManager manager = (ActivityManager) getSystemService(Context.ACTIVITY_SERVICE);
        for (ActivityManager.RunningServiceInfo service : manager.getRunningServices(Integer.MAX_VALUE)) {
            if (serviceClass.getName().equals(service.service.getClassName())) {
                return true;
            }
        }
        return false;
    }

    public void cancelJob() {
        JobScheduler scheduler = (JobScheduler) getSystemService(JOB_SCHEDULER_SERVICE);
        scheduler.cancel(JOB_NUMBER);
        Log.d(TAG, "Job Cancelled.");
    }
}

Does anyone have any insight as to why this might be?

Upvotes: 3

Views: 8395

Answers (1)

Gabe Sechan
Gabe Sechan

Reputation: 93728

To check if a service is running:

class MyService extends Service {
   private static boolean isRunning;
   public int onStartCommand (Intent intent, 
                int flags, 
                int startId) {
        isRunning = true;
        ...
   }
   public void onDestroy() {
       isRunning = false;
   }
   public static boolean isRunning() { 
       return isRunning;
   }
}

Then to check if its running, just check MyService.isRunning().

To check if a service is scheduled:

if(JobScheduler.getPendingJob(jobID) == null) {
   //job notscheduled
}

Upvotes: 11

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