Android onLocationChanged location.getTime () returns wrong time

Question

I have a Samsung Galaxy Tab tab. I implemented android.location.LocationListener and onLocationChanged(Location location) and it gives me the correct longitude and latitude, but

The problem is this: location.getTime() gives me the wrong time, it returns a time of about 300,000 miles or so. It should be something like 1471243684497 .

I do not know what to do.

GPSTracker Class:

 import java.io.IOException; import java.util.List; import java.util.Locale; import android.app.Service; import android.content.Context; import android.content.Intent; import android.location.Address; import android.location.Geocoder; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.os.Bundle; import android.os.IBinder; import android.util.Log; public class GPSTracker extends Service implements LocationListener { //flag for GPS Status boolean isGPSEnabled = false; //flag for network status //boolean isNetworkEnabled = false; boolean canGetLocation = false; Location location; double latitude; double longitude; //The minimum distance to change updates in metters private static final long MIN_DISTANCE_CHANGE_FOR_UPDATES = 10; //10 metters //The minimum time beetwen updates in milliseconds private static final long MIN_TIME_BW_UPDATES = 1000 * 10; // 1 minute //Declaring a Location Manager protected LocationManager locationManager; /*public GPSTracker(Context context) { this.mContext = context; getLocation(); }*/ public Location getLocation(Context ctx) { try { locationManager = (LocationManager) ctx.getSystemService(LOCATION_SERVICE); //getting GPS status isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER); //getting network status //isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER); if (!isGPSEnabled /*&& !isNetworkEnabled*/) { // no network provider is enabled } else { this.canGetLocation = true; //First get location from Network Provider /* 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 = locationManager.getLastKnownLocation(LocationManager.NETWORK_PROVIDER); updateGPSCoordinates(); } }*/ //if GPS Enabled get lat/long using GPS Services if (isGPSEnabled) { if (location == 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 = locationManager.getLastKnownLocation(LocationManager.GPS_PROVIDER); updateGPSCoordinates(); } } } } } catch (Exception e) { //e.printStackTrace(); Log.e("Error : Location", "Impossible to connect to LocationManager", e); } return location; } public void updateGPSCoordinates() { if (location != null) { latitude = location.getLatitude(); longitude = location.getLongitude(); } } /** * Stop using GPS listener * Calling this function will stop using GPS in your app */ public void stopUsingGPS() { if (locationManager != null) { locationManager.removeUpdates(GPSTracker.this); } } /** * Function to get latitude */ public double getLatitude() { if (location != null) { latitude = location.getLatitude(); } return latitude; } /** * Function to get longitude */ public double getLongitude() { if (location != null) { longitude = location.getLongitude(); } return longitude; } /** * Function to check GPS/wifi enabled */ public boolean canGetLocation() { if(!locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER)/*&& !locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER)*/){ this.canGetLocation = false; } else { this.canGetLocation = true; } return this.canGetLocation; } /** * Get list of address by latitude and longitude * @return null or List<Address> */ public List<Address> getGeocoderAddress(Context context) { if (location != null) { Geocoder geocoder = new Geocoder(context, Locale.ENGLISH); try { List<Address> addresses = geocoder.getFromLocation(latitude, longitude, 1); return addresses; } catch (IOException e) { //e.printStackTrace(); Log.e("Error : Geocoder", "Impossible to connect to Geocoder", e); } } return null; } /** * Try to get AddressLine * @return null or addressLine */ public String getAddressLine(Context context) { List<Address> addresses = getGeocoderAddress(context); if (addresses != null && addresses.size() > 0) { Address address = addresses.get(0); String addressLine = address.getAddressLine(0); return addressLine; } else { return null; } } /** * Try to get Locality * @return null or locality */ public String getLocality(Context context) { List<Address> addresses = getGeocoderAddress(context); if (addresses != null && addresses.size() > 0) { Address address = addresses.get(0); String locality = address.getLocality(); return locality; } else { return null; } } /** * Try to get Postal Code * @return null or postalCode */ public String getPostalCode(Context context) { List<Address> addresses = getGeocoderAddress(context); if (addresses != null && addresses.size() > 0) { Address address = addresses.get(0); String postalCode = address.getPostalCode(); return postalCode; } else { return null; } } /** * Try to get CountryName * @return null or postalCode */ public String getCountryName(Context context) { List<Address> addresses = getGeocoderAddress(context); if (addresses != null && addresses.size() > 0) { Address address = addresses.get(0); String countryName = address.getCountryName(); return countryName; } else { 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; } } 

And my own class that extends the GPSTracker class:

 public class NewMainService extends GPSTracker { @Override public void onLocationChanged(Location location) { long time = location.getTime(); Log.i("TAG", "onLocationChanged time: "+time); //prints wrong timestamp super.onLocationChanged(location); } } 

EDIT

everything works fine on other devices.

I googled this and this is a bug on some devices. Location listeners stop receiving changes after a while.

the time it gives me is similar to the device’s runtime, it's a few hours, it's not a date.

Answer 1

You can use the NMEA location manager and get time from it. this is always true and is in UTC mode, even if you change the device’s time zone or date and time, it will always give you the current real date and time.

Limitaions:

- If GPS or location is off, you will not get NMEA. (you can check if the location is enabled or not)

-if The location is enabled, but the user changed his accuracy to the network only through Settings, you will not get NMEA. (you can check if locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER) )