Keep app running in background on Android all the time

Question

I have to get people\'s trajectory (from home to job, for example), so my app gets latitude and longitude (I have two buttons: 1. Start to get lat and lon 2. Stop to get la

Answer 1

I've read that some smartphones have these kind of problems, I found that Huawei, Xiaomi among others have problems with implementation Services, and guess what: My smartphone is a Huawei. The problem comes out of programs preinstalled on these devices for energy saving. Therefore, I tried to run my program on a Nexus (simulator for this one), a Sony and a Moto G, the program ran well for these 3 devices. Thanks for help.

Answer 2

Try our this

public class ForegroundService extends Service {
    private static final String LOG_TAG = "ForegroundService";

    @Override
    public void onCreate() {
        super.onCreate();
    }

    @Override
    public int onStartCommand(Intent intent, int flags, int startId) {

        // Your logical code here

        return START_STICKY;
    }

    @Override
    public void onTaskRemoved(Intent rootIntent) {

        //When remove app from background then start it again
        startService(new Intent(this, ForegroundService.class));

        super.onTaskRemoved(rootIntent);
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        Log.i(LOG_TAG, "In onDestroy");
    }

    @Override
    public IBinder onBind(Intent intent) {
        // Used only in case of bound services.
        return null;
    }
}

On Start button click:

Intent startIntent = new Intent(MainActivity.this, ForegroundService.class);
    startService(startIntent);

In Manifest

<service
            android:name=".ForegroundService"
            android:enabled="true"
            android:stopWithTask="false" />

Answer 3

As @Gudin says, it looks to me like you stop the service after 20 seconds. However, since you say this works sometimes, I'm guessing that's just some test code. I suspect your problem is in how you start the Service. Passing the Activity's context means your Service is tied to the lifecycle of that Activity. If that is destroyed, I think your Service goes with it. (Simply going through onStop() of the Activity & not onDestroy() leaves the Service intact). Try this

    Intent intent = new Intent(getApplicationContext(), MyService.class);

I tried duplicating your problem but couldn't so I can't say for sure this is your problem. This is a good place to start though.