Background service with location listener in android

Question

I am creating a background service that will run in its own process. It should allow me to listen if the device location has changed. I should be able to change criteria like the distance moved before notifying the UI.

How can I do the same? I have a little knowledge of service and LocationListener implementations. Any tutorials around the net would be appreciated.

I got one back-link from stack overflow, but I didn't understand much of it.

User · Answer

Very easy no need create class extends LocationListener 1- Variable

private LocationManager mLocationManager;
private LocationListener mLocationListener;
private static double currentLat =0;
private static double currentLon =0;

2- onStartService()

@Override public void onStartService() {
    addListenerLocation();
}

3- Method addListenerLocation()

 private void addListenerLocation() {
    mLocationManager = (LocationManager)
            getSystemService(Context.LOCATION_SERVICE);
    mLocationListener = new LocationListener() {
        @Override
        public void onLocationChanged(Location location) {
            currentLat = location.getLatitude();
            currentLon = location.getLongitude();

            Toast.makeText(getBaseContext(),currentLat+"-"+currentLon, Toast.LENGTH_SHORT).show();

        }

        @Override
        public void onStatusChanged(String provider, int status, Bundle extras) {
        }

        @Override
        public void onProviderEnabled(String provider) {
            Location lastKnownLocation = mLocationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
            if(lastKnownLocation!=null){
                currentLat = lastKnownLocation.getLatitude();
                currentLon = lastKnownLocation.getLongitude();
            }

        }

        @Override
        public void onProviderDisabled(String provider) {
        }
    };
    mLocationManager.requestLocationUpdates(
            LocationManager.GPS_PROVIDER, 500, 10, mLocationListener);
}

4- onDestroy()

@Override
public void onDestroy() {
    super.onDestroy();
    mLocationManager.removeUpdates(mLocationListener);
}

User · Answer

Background location service  It will be restarted even after killing the app   MainActivity java  public class MainActivity extends AppCompatActivity       AlarmManager alarmManager      Button stop      PendingIntent pendingIntent        Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity main            if  alarmManager    null                alarmManager    AlarmManager  getSystemService Context ALARM SERVICE               Intent intent   new Intent this  AlarmReceive class               pendingIntent   PendingIntent getBroadcast this  0  intent  0               alarmManager setRepeating AlarmManager RTC WAKEUP  System currentTimeMillis    30000                      pendingIntent                       BookingTrackingService java  public class BookingTrackingService extends Service implements LocationListener        private static final String TAG    BookingTrackingService       private Context context      boolean isGPSEnable   false      boolean isNetworkEnable   false      double latitude  longitude      LocationManager locationManager      Location location      private Handler mHandler   new Handler        private Timer mTimer   null      long notify interval   30000       public double track lat   0 0      public double track lng   0 0      public static String str receiver    servicetutorial service receiver       Intent intent        Nullable      Override     public IBinder onBind Intent intent            return null              Override     public void onCreate             super onCreate             mTimer   new Timer            mTimer schedule new TimerTaskToGetLocation    5  notify interval           intent   new Intent str receiver               Override     public int onStartCommand Intent intent  int flags  int startId             this context   this            return START NOT STICKY              Override     public void onDestroy             super onDestroy            Log e TAG   onDestroy  lt  lt             if  mTimer    null                mTimer cancel                         private void trackLocation             Log e TAG   trackLocation            String TAG TRACK LOCATION    trackLocation           Map lt String  String gt  params   new HashMap lt  gt             params put  latitude        track lat           params put  longitude        track lng            Log e TAG   param track location  gt  gt      params toString              stopSelf            mTimer cancel                 Override     public void onLocationChanged Location location                 Override     public void onStatusChanged String provider  int status  Bundle extras                 Override     public void onProviderEnabled String provider                 Override     public void onProviderDisabled String provider                                                      private void fn getlocation             locationManager    LocationManager  getApplicationContext   getSystemService LOCATION SERVICE           isGPSEnable   locationManager isProviderEnabled LocationManager GPS PROVIDER           isNetworkEnable   locationManager isProviderEnabled LocationManager NETWORK PROVIDER            if   isGPSEnable  amp  amp   isNetworkEnable                Log e TAG   CAN T GET LOCATION                stopSelf              else               if  isNetworkEnable                    location   null                  locationManager requestLocationUpdates LocationManager NETWORK PROVIDER  1000  0  this                   if  locationManager    null                        location   locationManager getLastKnownLocation LocationManager NETWORK PROVIDER                       if  location    null                             Log e TAG   isNetworkEnable latitude    location getLatitude       nlongitude    location getLongitude                                  latitude   location getLatitude                            longitude   location getLongitude                            track lat   latitude                          track lng   longitude                            fn update location                                                                      if  isGPSEnable                    location   null                  locationManager requestLocationUpdates LocationManager GPS PROVIDER  1000  0  this                   if  locationManager    null                        location   locationManager getLastKnownLocation LocationManager GPS PROVIDER                       if  location    null                            Log e TAG   isGPSEnable latitude    location getLatitude       nlongitude    location getLongitude                                  latitude   location getLatitude                            longitude   location getLongitude                            track lat   latitude                          track lng   longitude                            fn update location                                                                      Log e TAG   START SERVICE                trackLocation                          private class TimerTaskToGetLocation extends TimerTask            Override         public void run                  mHandler post new Runnable                      Override                 public void run                         fn getlocation                                                              private void fn update Location location                 intent putExtra  latutide   location getLatitude                    intent putExtra  longitude   location getLongitude                    sendBroadcast intent               AlarmReceive java  BroadcastReceiver   public class AlarmReceive extends BroadcastReceiver         Override     public void onReceive Context context  Intent intent            Log e  Service call       You are in AlarmReceive class             Intent background   new Intent context  BookingTrackingService class             Intent background   new Intent context  GoogleService class           Log e  AlarmReceive    testing called broadcast called            context startService background             AndroidManifest xml   lt uses-permission android name  android permission ACCESS COARSE LOCATION    gt       lt uses-permission android name  android permission ACCESS FINE LOCATION    gt     lt service             android name   ServiceAndBroadcast BookingTrackingService              android enabled  true    gt            lt receiver             android name   ServiceAndBroadcast AlarmReceive              android exported  false  gt               lt intent-filter gt                   lt action android name  android intent action BOOT COMPLETED    gt               lt  intent-filter gt           lt  receiver gt

User · Answer

I know I am posting this answer little late, but I felt it is worth using Google's fuse location provider service to get the current location.

Main features of this api are :

1.Simple APIs: Lets you choose your accuracy level as well as power consumption.

2.Immediately available: Gives your apps immediate access to the best, most recent location.

3.Power-efficiency: It chooses the most efficient way to get the location with less power consumptions

4.Versatility: Meets a wide range of needs, from foreground uses that need highly accurate location to background uses that need periodic location updates with negligible power impact.

It is flexible in while updating in location also. If you want current location only when your app starts then you can use getLastLocation(GoogleApiClient) method.

If you want to update your location continuously then you can use requestLocationUpdates(GoogleApiClient,LocationRequest, LocationListener)

You can find a very nice blog about fuse location here and google doc for fuse location also can be found here.

Update

According to developer docs starting from Android O they have added new limits on background location.

If your app is running in the background, the location system service computes a new location for your app only a few times each hour. This is the case even when your app is requesting more frequent location updates. However if your app is running in the foreground, there is no change in location sampling rates compared to Android 7.1.1 (API level 25).

User · Answer

First you need to create a Service  In that Service  create a class extending LocationListener  For this  use the following code snippet of Service    public class LocationService extends Service   public static final String BROADCAST ACTION    Hello World   private static final int TWO MINUTES   1000   60   2  public LocationManager locationManager  public MyLocationListener listener  public Location previousBestLocation   null   Intent intent  int counter   0    Override public void onCreate         super onCreate        intent   new Intent BROADCAST ACTION       Override public void onStart Intent intent  int startId        locationManager    LocationManager  getSystemService Context LOCATION SERVICE       listener   new MyLocationListener        if  ActivityCompat checkSelfPermission this  Manifest permission ACCESS FINE LOCATION     PackageManager PERMISSION GRANTED  amp  amp  ActivityCompat checkSelfPermission this  Manifest permission ACCESS COARSE LOCATION     PackageManager PERMISSION GRANTED            return            locationManager requestLocationUpdates LocationManager NETWORK PROVIDER  4000  0   LocationListener  listener       locationManager requestLocationUpdates LocationManager GPS PROVIDER  4000  0  listener       Override public IBinder onBind Intent intent        return null     protected boolean isBetterLocation Location location  Location currentBestLocation        if  currentBestLocation    null               A new location is always better than no location         return true                Check whether the new location fix is newer or older     long timeDelta   location getTime   - currentBestLocation getTime        boolean isSignificantlyNewer   timeDelta  gt  TWO MINUTES      boolean isSignificantlyOlder   timeDelta  lt  -TWO MINUTES      boolean isNewer   timeDelta  gt  0          If it s been more than two minutes since the current location  use the new location        because the user has likely moved     if  isSignificantlyNewer            return true             If the new location is more than two minutes older  it must be worse       else if  isSignificantlyOlder            return false                Check whether the new location fix is more or less accurate     int accuracyDelta    int   location getAccuracy   - currentBestLocation getAccuracy         boolean isLessAccurate   accuracyDelta  gt  0      boolean isMoreAccurate   accuracyDelta  lt  0      boolean isSignificantlyLessAccurate   accuracyDelta  gt  200          Check if the old and new location are from the same provider     boolean isFromSameProvider   isSameProvider location getProvider                currentBestLocation getProvider             Determine location quality using a combination of timeliness and accuracy     if  isMoreAccurate            return true        else if  isNewer  amp  amp   isLessAccurate            return true        else if  isNewer  amp  amp   isSignificantlyLessAccurate  amp  amp  isFromSameProvider            return true            return false           Checks whether two providers are the same    private boolean isSameProvider String provider1  String provider2        if  provider1    null            return provider2    null            return provider1 equals provider2         Override public void onDestroy            handler removeCallbacks sendUpdatesToUI            super onDestroy        Log v  STOP SERVICE    DONE        locationManager removeUpdates listener      public static Thread performOnBackgroundThread final Runnable runnable        final Thread t   new Thread              Override         public void run                 try                   runnable run                  finally                                       t start        return t    public class MyLocationListener implements LocationListener        public void onLocationChanged final Location loc                Log i           Location changed            if isBetterLocation loc  previousBestLocation                 loc getLatitude                loc getLongitude                intent putExtra  Latitude   loc getLatitude                 intent putExtra  Longitude   loc getLongitude                 intent putExtra  Provider   loc getProvider                 sendBroadcast intent                          Override     public void onStatusChanged String provider  int status  Bundle extras                public void onProviderDisabled String provider                Toast makeText  getApplicationContext     Gps Disabled   Toast LENGTH SHORT   show                public void onProviderEnabled String provider                Toast makeText  getApplicationContext     Gps Enabled   Toast LENGTH SHORT  show              Add this Service any where in your project  the way you want

[android] Background service with location listener in android

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