LocationService.java

package com.github.bkhezry.buildingcollection.service;

import android.app.IntentService;
import android.app.Notification;
import android.app.NotificationChannel;
import android.app.NotificationManager;
import android.app.Service;
import android.content.Intent;
import android.location.Location;
import android.os.Build;

import androidx.annotation.Nullable;
import androidx.localbroadcastmanager.content.LocalBroadcastManager;

import com.github.bkhezry.buildingcollection.util.Constants;

import io.nlopez.smartlocation.OnLocationUpdatedListener;
import io.nlopez.smartlocation.SmartLocation;
import io.nlopez.smartlocation.location.config.LocationAccuracy;
import io.nlopez.smartlocation.location.config.LocationParams;
import io.nlopez.smartlocation.location.providers.LocationGooglePlayServicesProvider;

public class LocationService extends IntentService implements OnLocationUpdatedListener {
  private static final LocationAccuracy ACCURACY_HIGH = LocationAccuracy.HIGH;    //HIGH
  private SmartLocation smartLocation;

  /**
   * Creates an IntentService.  Invoked by your subclass's constructor.
   */
  public LocationService() {
    super("location-service");
  }

  @Override
  protected void onHandleIntent(@Nullable Intent intent) {

  }

  @Override
  public void onLocationUpdated(Location location) {
    Intent intent = new Intent(Constants.GPS_LOCATION);
    intent.putExtra(Constants.GPS_LOCATION, location);
    LocalBroadcastManager.getInstance(this).sendBroadcast(intent);
  }

  @Override
  public void onCreate() {
    super.onCreate();
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
      NotificationChannel channel = new NotificationChannel("channel_01", "My Channel", NotificationManager.IMPORTANCE_DEFAULT);

      NotificationManager notificationManager = getSystemService(NotificationManager.class);
      notificationManager.createNotificationChannel(channel);

      Notification.Builder builder = new Notification.Builder(getApplicationContext(), "channel_01").setAutoCancel(true);
      startForeground(1, builder.build());
    }
  }

  @Override
  public int onStartCommand(Intent intent, int flags, int startId) {
    if (intent != null) {
      boolean toStart = intent.getBooleanExtra("toStart", true);
      if (toStart) {
        smartLocation = new SmartLocation.Builder(getApplicationContext()).build();
        startLocation();
      } else {
        SmartLocation.with(getApplicationContext()).location().stop();
        stopSelf();
      }
    } else {
      SmartLocation.with(getApplicationContext()).location().stop();
      stopSelf();
    }
    return Service.START_STICKY;
  }

  private void startLocation() {
    float distanceHigh = 1f;
    long intervalHigh = 1L;
    LocationParams locationParams = new LocationParams.Builder()
        .setAccuracy(ACCURACY_HIGH)
        .setInterval(intervalHigh * 1000)
        .setDistance(distanceHigh).build();
    LocationGooglePlayServicesProvider provider = new LocationGooglePlayServicesProvider();
    provider.setCheckLocationSettings(true);
    smartLocation.location(provider).config(locationParams).start(this);
  }

  @Override
  public void onDestroy() {
    super.onDestroy();
    SmartLocation.with(getApplicationContext()).location().stop();
  }
}

Intent intent = new Intent(MainActivity.this, LocationService.class);
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
      ContextCompat.startForegroundService(MainActivity.this, intent);
    } else {
      startService(intent);
    }