Android Location Manager Get GPS location if no GPS then get to Network Provider location

Question

I am using this given below code to get locations   public Location getLocation             try               mLocationManager    LocationManager  context getSystemService LOCATION SERVICE                   getting GPS status             boolean isGPSEnabled   mLocationManager isProviderEnabled LocationManager GPS PROVIDER                   getting network status             boolean isNetworkEnabled   mLocationManager isProviderEnabled LocationManager NETWORK PROVIDER                if   isGPSEnabled  amp  amp   isNetworkEnabled                       no network provider is enabled               else                      First get location from Network Provider                 if  isNetworkEnabled                        mLocationManager requestLocationUpdates  LocationManager NETWORK PROVIDER   MIN TIME BW UPDATES   MIN DISTANCE CHANGE FOR UPDATES  this                       Log d  Network    Network                        if  mLocationManager    null                            location   mLocationManager getLastKnownLocation LocationManager NETWORK PROVIDER                           if  location    null                                lat   location getLatitude                                lng   location getLongitude                                                                                        get the location by gps                 if  isGPSEnabled                        if  location    null                            mLocationManager requestLocationUpdates LocationManager GPS PROVIDER MIN TIME BW UPDATES MIN DISTANCE CHANGE FOR UPDATES  this                           Log d  GPS Enabled    GPS Enabled                            if  mLocationManager    null   location   mLocationManager getLastKnownLocation LocationManager GPS PROVIDER                               if  location    null                                    lat   location getLatitude                                    lng   location getLongitude                                                                                                                             catch  Exception e                e printStackTrace                       return location          It is working properly  but I would like to get GPS location first  and in case if it is unavailable   location manager should query for Network provider  in which I am getting trouble   Please  recommend me the good way to do this

User · Answer

I made some changes in above code to look for a location fix by both GPS and Network for about 5sec and give me the best known location out of it.

public class LocationService implements LocationListener {

    boolean isGPSEnabled = false;

    boolean isNetworkEnabled = false;

    boolean canGetLocation = false;

    final static long MIN_TIME_INTERVAL = 60 * 1000L;

    Location location;


    // The minimum distance to change Updates in meters
    private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 0; // 10

    // The minimum time between updates in milliseconds
    private static final long MIN_TIME_BW_UPDATES = 1; // 1 minute

    protected LocationManager locationManager;

    private CountDownTimer timer = new CountDownTimer(5 * 1000, 1000) {

        public void onTick(long millisUntilFinished) {

        }

        public void onFinish() {
            stopUsingGPS();
        }
    };

    public LocationService() {
        super(R.id.gps_service_id);
    }


    public void start() {
        if (Utils.isNetworkAvailable(context)) {

            try {


                timer.start();


                locationManager = (LocationManager) context
                        .getSystemService(Context.LOCATION_SERVICE);

                isGPSEnabled = locationManager
                        .isProviderEnabled(LocationManager.GPS_PROVIDER);

                isNetworkEnabled = locationManager
                        .isProviderEnabled(LocationManager.NETWORK_PROVIDER);
                this.canGetLocation = true;
                if (isNetworkEnabled) {
                    locationManager.requestLocationUpdates(
                            LocationManager.NETWORK_PROVIDER,
                            MIN_TIME_BW_UPDATES,
                            MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
                    Log.d("Network", "Network");
                    if (locationManager != null) {
                        Location tempLocation = locationManager
                                .getLastKnownLocation(LocationManager.NETWORK_PROVIDER);
                        if (tempLocation != null
                                && isBetterLocation(tempLocation,
                                        location))
                            location = tempLocation;
                    }
                }
                if (isGPSEnabled) {

                    locationManager.requestSingleUpdate(
                            LocationManager.GPS_PROVIDER, this, null);
                    locationManager.requestLocationUpdates(
                            LocationManager.GPS_PROVIDER, MIN_TIME_BW_UPDATES,
                            MIN_DISTANCE_CHANGE_FOR_UPDATES, this);
                    Log.d("GPS Enabled", "GPS Enabled");
                    if (locationManager != null) {
                        Location tempLocation = locationManager
                                .getLastKnownLocation(LocationManager.GPS_PROVIDER);
                        if (tempLocation != null
                                && isBetterLocation(tempLocation,
                                        location))
                            location = tempLocation;
                    }
                }

            } catch (Exception e) {
                onTaskError(e.getMessage());
                e.printStackTrace();
            }
        } else {
            onOfflineResponse(requestData);
        }
    }

    public void stopUsingGPS() {
        if (locationManager != null) {
            locationManager.removeUpdates(LocationService.this);
        }
    }

    public boolean canGetLocation() {
        locationManager = (LocationManager) context
                .getSystemService(Context.LOCATION_SERVICE);
        isGPSEnabled = locationManager
                .isProviderEnabled(LocationManager.GPS_PROVIDER);

        // getting network status
        isNetworkEnabled = locationManager
                .isProviderEnabled(LocationManager.NETWORK_PROVIDER);
        return isGPSEnabled || isNetworkEnabled;
    }

    @Override
    public void onLocationChanged(Location location) {

        if (location != null
                && isBetterLocation(location, this.location)) {

            this.location = location;

        }
    }

    @Override
    public void onProviderDisabled(String provider) {
    }

    @Override
    public void onProviderEnabled(String provider) {
    }

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

    @Override
    public Object getResponseObject(Object location) {
        return location;
    }

    public static 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 > MIN_TIME_INTERVAL;
        boolean isSignificantlyOlder = timeDelta < -MIN_TIME_INTERVAL;
        boolean isNewer = timeDelta > 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 > 0;
        boolean isMoreAccurate = accuracyDelta < 0;
        boolean isSignificantlyLessAccurate = accuracyDelta > 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 && !isLessAccurate) {
            return true;
        } else if (isNewer && !isSignificantlyLessAccurate
                && isFromSameProvider) {
            return true;
        }
        return false;
    }

}

In the above class, I am registering a location listener for both GPS and network, so an onLocationChanged call back can be called by either or both of them multiple times and we just compare the new location fix with the one we already have and keep the best one.

User · Answer

If you want to run inside a background service and take the data in foreground use the below one  it is tested and verified   public class MyService extends Service          implements OnMapReadyCallback  GoogleApiClient ConnectionCallbacks           GoogleApiClient OnConnectionFailedListener           com google android gms location LocationListener         private static final int ASHIS   1234      Intent intentForPendingIntent      HandlerThread handlerThread      Looper looper      GoogleApiClient mGoogleApiClient      private LocationRequest mLocationRrequest      private static final int UPDATE INTERVAL   1000      private static final int FASTEST INTERVAL   100      private static final int DSIPLACEMENT UPDATES   1            private Handler handler1      private Runnable runable1      private Location mLastLocation      private float waitingTime      private int waiting2min      private Location locationOld      private double distance      private float totalWaiting      private float speed      private long timeGpsUpdate      private long timeOld      private NotificationManager mNotificationManager      Notification notification      PendingIntent resultPendingIntent      NotificationCompat Builder mBuilder           Sets an ID for the notification     int mNotificationId   001      private static final String TAG    BroadcastService       public static final String BROADCAST ACTION    speedExceeded       private final Handler handler   new Handler        Intent intentforBroadcast      int counter   0      private Runnable sendUpdatesToUI        Nullable      Override     public IBinder onBind Intent intent            Toast makeText MyService this   binder   Toast LENGTH SHORT  show             return null               Override     public void onCreate             showNotification            intentforBroadcast    new Intent BROADCAST ACTION            Toast makeText MyService this   created   Toast LENGTH SHORT  show             if  mGoogleApiClient    null                mGoogleApiClient   new GoogleApiClient Builder this                       addConnectionCallbacks this                       addOnConnectionFailedListener this                       addApi LocationServices API                       build                      createLocationRequest            mGoogleApiClient connect                  TargetApi Build VERSION CODES JELLY BEAN      private void showNotification              mBuilder                    NotificationCompat Builder  new NotificationCompat Builder this                           setSmallIcon R drawable ic media play                           setContentTitle  Total Waiting Time                            setContentText totalWaiting                Intent resultIntent   new Intent this  trackingFusion class               Because clicking the notification opens a new   special   activity  there s            no need to create an artificial back stack          PendingIntent resultPendingIntent                   PendingIntent getActivity                          this                          0                          resultIntent                          PendingIntent FLAG UPDATE CURRENT                            mBuilder setContentIntent resultPendingIntent           NotificationManager mNotifyMgr                    NotificationManager  getSystemService NOTIFICATION SERVICE              Builds the notification and issues it           mNotifyMgr notify mNotificationId  mBuilder build               startForeground 001  mBuilder getNotification                  Override     public void onLocationChanged Location location               handler removeCallbacks runable            Toast makeText MyService this   speed    speed  Toast LENGTH SHORT  show            timeGpsUpdate   location getTime            float delta    timeGpsUpdate - timeOld    1000          if  location getAccuracy    lt  100                speed   location getSpeed                distance    mLastLocation distanceTo location               Log e  distance    onLocationChanged      distance                 mLastLocation   location                newLocation   mLastLocation               Log e  location    location                        speed    long   distance   delta                 locationOld   location              mLastLocation   location               diaplayViews                       diaplayViews           if  map    null             map addMarker new MarkerOptions                     position new LatLng location getLatitude    location getLongitude                       title  Hello world                            private void createLocationRequest              mLocationRrequest   new LocationRequest             mLocationRrequest setInterval UPDATE INTERVAL           mLocationRrequest setFastestInterval FASTEST INTERVAL           mLocationRrequest setPriority LocationRequest PRIORITY HIGH ACCURACY           mLocationRrequest setSmallestDisplacement DSIPLACEMENT UPDATES                private void methodToCalculateWaitingTime               if  handler1    null                handler1 removeCallbacks runable1                        Log e  Here    here1            handler1   new Handler Looper getMainLooper             runable1   new Runnable                 public void run                      Log e  Here    here2     mLastLocation getSpeed                       if  mLastLocation    null                        diaplayViews                        if   mLastLocation getSpeed      0 0                              increaseTime                           else                           if  waitingTime  lt   120                                waiting2min   0                                                                       handler1 postDelayed this  10000                     else                       if  ActivityCompat checkSelfPermission MyService this  Manifest permission ACCESS FINE LOCATION     PackageManager PERMISSION GRANTED  amp  amp  ActivityCompat checkSelfPermission MyService this  Manifest permission ACCESS COARSE LOCATION     PackageManager PERMISSION GRANTED                               TODO  Consider calling                               ActivityCompat requestPermissions                            here to request the missing permissions  and then overriding                              public void onRequestPermissionsResult int requestCode  String   permissions                                                                      int   grantResults                             to handle the case where the user grants the permission  See the documentation                            for ActivityCompat requestPermissions for more details                          return                                             locationOld   LocationServices FusedLocationApi getLastLocation mGoogleApiClient                       mLastLocation   locationOld                                                       handler1 postDelayed runable1  10000                private void diaplayViews             float price    float   14   distance   0 5              textDistance setText waitingTime  a             private void increaseTime             waiting2min   waiting2min   10          if  waiting2min  gt   120                         if  waiting2min    120                    waitingTime   waitingTime   2   60                  else                   waitingTime   waitingTime   10                              totalWaiting   waitingTime   60              showNotification                Log e  waiting Time    increaseTime      totalWaiting                           Override     public void onDestroy             Toast makeText MyService this   distroyed   Toast LENGTH SHORT  show            if  mGoogleApiClient isConnected                   mGoogleApiClient disconnect                      mGoogleApiClient disconnect                 Override     public void onConnected Bundle bundle            Log e  Connection fusion    connected             startLocationUpdates                   Override     public void onConnectionSuspended int i                private void startLocationUpdates             Location location   plotTheInitialMarkerAndGetInitialGps            if  location    null                plotTheInitialMarkerAndGetInitialGps                else                mLastLocation   location              methodToCalculateWaitingTime                         private Location plotTheInitialMarkerAndGetInitialGps             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                   TODO  Consider calling                   ActivityCompat requestPermissions                here to request the missing permissions  and then overriding                  public void onRequestPermissionsResult int requestCode  String   permissions                                                          int   grantResults                 to handle the case where the user grants the permission  See the documentation                for ActivityCompat requestPermissions for more details              return null                    LocationServices FusedLocationApi requestLocationUpdates mGoogleApiClient  mLocationRrequest  this           locationOld   LocationServices FusedLocationApi getLastLocation mGoogleApiClient           if   locationOld    null                 mLastLocation   locationOld               timeOld   locationOld getTime              else               startLocationUpdates                       return mLastLocation               Override     public int onStartCommand Intent intent  int flags  int startId            onStart intent  startId           Toast makeText MyService this   start command   Toast LENGTH SHORT  show             sendUpdatesToUI   new Runnable                 public void run                     DisplayLoggingInfo                    handler postDelayed this  10000      5 seconds                                  handler postDelayed sendUpdatesToUI  10000      1 second         Log i  LocalService    Received start id     startId          intent           return START NOT STICKY              Override     public void onStart Intent intent  int startId            sendUpdatesToUI   new Runnable                 public void run                     Log e  sent    sent                    DisplayLoggingInfo                    handler postDelayed this  5000      5 seconds                                  handler postDelayed sendUpdatesToUI  1000      1 second         Log i  LocalService    Received start id     startId          intent           super onStart intent  startId              private void DisplayLoggingInfo             Log d TAG   entered DisplayLoggingInfo            intentforBroadcast putExtra  distance   distance           LocalBroadcastManager getInstance this  sendBroadcast intentforBroadcast               Override     public void onConnectionFailed ConnectionResult connectionResult                 Override     public void onMapReady GoogleMap googleMap

User · Answer

Main Class   public class AndroidLocationActivity extends Activity    Button btnGPSShowLocation  Button btnNWShowLocation   AppLocationService appLocationService    Override protected void onCreate Bundle savedInstanceState        super onCreate savedInstanceState       setContentView R layout activity main       appLocationService   new AppLocationService              AndroidLocationActivity this        btnGPSShowLocation    Button  findViewById R id btnGPSShowLocation       btnGPSShowLocation setOnClickListener new View OnClickListener              Override         public void onClick View arg0                 Location gpsLocation   appLocationService                      getLocation LocationManager GPS PROVIDER                if  gpsLocation    null                    double latitude   gpsLocation getLatitude                    double longitude   gpsLocation getLongitude                    Toast makeText                          getApplicationContext                             Mobile Location  GPS    nLatitude      latitude                                     nLongitude      longitude                          Toast LENGTH LONG  show                  else                   showSettingsAlert  GPS                                          btnNWShowLocation    Button  findViewById R id btnNWShowLocation       btnNWShowLocation setOnClickListener new View OnClickListener              Override         public void onClick View arg0                 Location nwLocation   appLocationService                      getLocation LocationManager NETWORK PROVIDER                if  nwLocation    null                    double latitude   nwLocation getLatitude                    double longitude   nwLocation getLongitude                    Toast makeText                          getApplicationContext                             Mobile Location  NW    nLatitude      latitude                                     nLongitude      longitude                          Toast LENGTH LONG  show                   else                   showSettingsAlert  NETWORK                                         public void showSettingsAlert String provider        AlertDialog Builder alertDialog   new AlertDialog Builder              AndroidLocationActivity this        alertDialog setTitle provider     SETTINGS         alertDialog setMessage provider                 is not enabled  Want to go to settings menu          alertDialog setPositiveButton  Settings               new DialogInterface OnClickListener                     public void onClick DialogInterface dialog  int which                        Intent intent   new Intent                              Settings ACTION LOCATION SOURCE SETTINGS                       AndroidLocationActivity this startActivity intent                                          alertDialog setNegativeButton  Cancel               new DialogInterface OnClickListener                     public void onClick DialogInterface dialog  int which                        dialog cancel                                           alertDialog show        Override public boolean onCreateOptionsMenu Menu menu        getMenuInflater   inflate R menu main  menu       return true          Next Class   public class AppLocationService extends Service implements LocationListener    protected LocationManager locationManager  Location location   private static final long MIN DISTANCE FOR UPDATE   10  private static final long MIN TIME FOR UPDATE   1000   60   2   public AppLocationService Context context        locationManager    LocationManager  context              getSystemService LOCATION SERVICE      public Location getLocation String provider        if  locationManager isProviderEnabled provider             locationManager requestLocationUpdates provider                  MIN TIME FOR UPDATE  MIN DISTANCE FOR UPDATE  this           if  locationManager    null                location   locationManager getLastKnownLocation provider               return location                      return null      Override public void onLocationChanged Location location        Override public void onProviderDisabled String provider        Override public void onProviderEnabled String provider        Override public void onStatusChanged String provider  int status  Bundle extras        Override public IBinder onBind Intent arg0        return null         Don t forget to add in your manifest    lt  -- to get location using GPS -- gt   lt uses-permission android name  android permission ACCESS FINE LOCATION    gt    lt  -- to get location using NetworkProvider -- gt   lt uses-permission android name  android permission INTERNET    gt

User · Answer

use the fusion API that google developer have developed with fusion of GPS Sensor Magnetometer Accelerometer also using Wifi or cell location to calculate or estimate the location  It is also able to give location updates also inside the building accurately   package com example ashis gpslocation   import android app Activity  import android location Location  import android os Bundle  import android support v7 app ActionBarActivity  import android support v7 app AppCompatActivity  import android util Log  import android widget TextView  import android widget Toast   import com google android gms common ConnectionResult  import com google android gms common GooglePlayServicesUtil  import com google android gms common api GoogleApiClient  import com google android gms common api GoogleApiClient ConnectionCallbacks  import com google android gms common api GoogleApiClient OnConnectionFailedListener  import com google android gms location LocationListener  import com google android gms location LocationRequest  import com google android gms location LocationServices   import java util concurrent Executors  import java util concurrent TimeUnit          Location sample        Demonstrates use of the Location API to retrieve the last known location for a device     This sample uses Google Play services  GoogleApiClient  but does not need to authenticate a user     See https   github com googlesamples android-google-accounts tree master QuickStart if you are    also using APIs that need authentication       public class MainActivity extends Activity implements LocationListener          GoogleApiClient ConnectionCallbacks          GoogleApiClient OnConnectionFailedListener        private static final long ONE MIN   500      private static final long TWO MIN   500      private static final long FIVE MIN   500      private static final long POLLING FREQ   1000   20      private static final long FASTEST UPDATE FREQ   1000   5      private static final float MIN ACCURACY   1 0f      private static final float MIN LAST READ ACCURACY   1       private LocationRequest mLocationRequest      private Location mBestReading  TextView tv      private GoogleApiClient mGoogleApiClient        Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState            if   servicesAvailable                  finish                       setContentView R layout activity main   tv   TextView  findViewById R id tv1           mLocationRequest   LocationRequest create            mLocationRequest setPriority LocationRequest PRIORITY HIGH ACCURACY           mLocationRequest setInterval POLLING FREQ           mLocationRequest setFastestInterval FASTEST UPDATE FREQ            mGoogleApiClient   new GoogleApiClient Builder this                   addApi LocationServices API                   addConnectionCallbacks this                   addOnConnectionFailedListener this                   build              if  mGoogleApiClient    null                mGoogleApiClient connect                          Override     protected void onResume             super onResume             if  mGoogleApiClient    null                mGoogleApiClient connect                          Override     protected void onPause    d         super onPause             if  mGoogleApiClient    null  amp  amp  mGoogleApiClient isConnected                  mGoogleApiClient disconnect                              tv setText location                   Determine whether new location is better than current best            estimate         if  null    mBestReading    location getAccuracy    lt  mBestReading getAccuracy                  mBestReading   location                if  mBestReading getAccuracy    lt  MIN ACCURACY                    LocationServices FusedLocationApi removeLocationUpdates mGoogleApiClient  this                                       Override     public void onConnected Bundle dataBundle               Get first reading  Get additional location updates if necessary         if  servicesAvailable                      Get best last location measurement meeting criteria             mBestReading   bestLastKnownLocation MIN LAST READ ACCURACY  FIVE MIN                if  null    mBestReading                        mBestReading getAccuracy    gt  MIN LAST READ ACCURACY                        mBestReading getTime    lt  System currentTimeMillis   - TWO MIN                     LocationServices FusedLocationApi requestLocationUpdates mGoogleApiClient  mLocationRequest  this                     Schedule a runnable to unregister location listeners                       Override                     public void run                             LocationServices FusedLocationApi removeLocationUpdates mGoogleApiClient  MainActivity this                                              ONE MIN  TimeUnit MILLISECONDS                                         Override     public void onConnectionSuspended int i                 private Location bestLastKnownLocation float minAccuracy  long minTime            Location bestResult   null          float bestAccuracy   Float MAX VALUE          long bestTime   Long MIN VALUE              Get the best most recent location currently available         Location mCurrentLocation   LocationServices FusedLocationApi getLastLocation mGoogleApiClient             tv setText mCurrentLocation              if  mCurrentLocation    null                float accuracy   mCurrentLocation getAccuracy                long time   mCurrentLocation getTime                 if  accuracy  lt  bestAccuracy                    bestResult   mCurrentLocation                  bestAccuracy   accuracy                  bestTime   time                                      Return best reading or null         if  bestAccuracy  gt  minAccuracy    bestTime  lt  minTime                return null                    else               return bestResult                        Override     public void onConnectionFailed ConnectionResult connectionResult                private boolean servicesAvailable             int resultCode   GooglePlayServicesUtil isGooglePlayServicesAvailable this            if  ConnectionResult SUCCESS    resultCode                return true                    else               GooglePlayServicesUtil getErrorDialog resultCode  this  0  show                return false

User · Answer

The recommended way to do this is to use LocationClient   First  define location update interval values  Adjust this to your needs   private static final int MILLISECONDS PER SECOND   1000  private static final long UPDATE INTERVAL   MILLISECONDS PER SECOND   UPDATE INTERVAL IN SECONDS  private static final int FASTEST INTERVAL IN SECONDS   1  private static final long FASTEST INTERVAL   MILLISECONDS PER SECOND   FASTEST INTERVAL IN SECONDS    Have your Activity implement GooglePlayServicesClient ConnectionCallbacks  GooglePlayServicesClient OnConnectionFailedListener  and LocationListener   public class LocationActivity extends Activity implements  GooglePlayServicesClient ConnectionCallbacks  GooglePlayServicesClient OnConnectionFailedListener  LocationListener      Then  set up a LocationClientin the onCreate   method of your Activity   public void onCreate Bundle savedInstanceState        super onCreate savedInstanceState        mLocationClient   new LocationClient this  this  this        mLocationRequest   LocationRequest create        mLocationRequest setPriority LocationRequest PRIORITY HIGH ACCURACY       mLocationRequest setInterval UPDATE INTERVAL       mLocationRequest setFastestInterval FASTEST INTERVAL       Add the required methods to your Activity  onConnected   is the method that is called when the LocationClientconnects  onLocationChanged   is where you ll retrieve the most up-to-date location    Override public void onConnectionFailed ConnectionResult connectionResult        Log w TAG   Location client connection failed        Override public void onConnected Bundle dataBundle        Log d TAG   Location client connected        mLocationClient requestLocationUpdates mLocationRequest  this        Override public void onDisconnected         Log d TAG   Location client disconnected        Override public void onLocationChanged Location location        if  location    null            Log d TAG   Updated Location      Double toString location getLatitude            Double toString location getLongitude            else           Log d TAG   Updated location NULL                    Be sure to connect disconnect the LocationClient so it s only using extra battery when absolutely necessary and so the GPS doesn t run indefinitely  The LocationClient must be connected in order to get data from it    public void onResume         super onResume        mLocationClient connect       public void onStop         if  mLocationClient isConnected              mLocationClient removeLocationUpdates this             mLocationClient disconnect        super onStop        Get the user s location  First try using the LocationClient  if that fails  fall back to the LocationManager   public Location getLocation         if  mLocationClient    null  amp  amp  mLocationClient isConnected              return mLocationClient getLastLocation          else           LocationManager locationManager    LocationManager  this getSystemService Context LOCATION SERVICE           if  locationManager    null                Location lastKnownLocationGPS   locationManager getLastKnownLocation LocationManager GPS PROVIDER               if  lastKnownLocationGPS    null                    return lastKnownLocationGPS                else                   return locationManager getLastKnownLocation LocationManager NETWORK PROVIDER                           else               return null

User · Answer

You re saying that you need GPS location first if its available  but what you did is first you re getting location from network provider and then from GPS  This will get location from Network and GPS as well if both are available  What you can do is  write these cases in if  else if block  Similar to-  if   isGPSEnabled  amp  amp   isNetworkEnabled        Can t get location by any way    else        if isGPSEnabled            get location from GPS        else if isNetworkEnabled            get location from Network Provider            So this will fetch location from GPS first  if available   else it will try to fetch location from Network Provider   EDIT   To make it better  I ll post a snippet  Consider it is in try-catch   boolean gps enabled   false  boolean network enabled   false   LocationManager lm    LocationManager  mCtx                  getSystemService Context LOCATION SERVICE    gps enabled   lm isProviderEnabled LocationManager GPS PROVIDER   network enabled   lm isProviderEnabled LocationManager NETWORK PROVIDER    Location net loc   null  gps loc   null  finalLoc   null   if  gps enabled      gps loc   lm getLastKnownLocation LocationManager GPS PROVIDER   if  network enabled      net loc   lm getLastKnownLocation LocationManager NETWORK PROVIDER    if  gps loc    null  amp  amp  net loc    null           smaller the number more accurate result will     if  gps loc getAccuracy    gt  net loc getAccuracy             finalLoc   net loc      else         finalLoc   gps loc              I used this just to get an idea  if both avail  its upto you which you want to take as I ve taken location with more accuracy     else        if  gps loc    null            finalLoc   gps loc        else if  net loc    null            finalLoc   net loc            Now you check finalLoc for null  if not then return it  You can write above code in a function which returns the desired  finalLoc  location  I think this might help

User · Answer

there are better ways to do it as mentioned on android developer sites http   developer android com guide topics location strategies html

[android] Android Location Manager, Get GPS location ,if no GPS then get to Network Provider location

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