Get GPS Status on location changed

Question

I am using GPS services to derive latitude & longitude in my App. I am able to get the latitude and longitude when the signal is avialable. Once i get a fix, if i have t

Answer 1

It sounds like you want to get the current location, and you want to know when a current location is unknown, so you do not try to use an old location. In that case, you can try to get the current location, and then test if it is old or not.

long fresh=60000; // 1 minute in milliseconds
if(System.currentTimeMillis()-location.getTime()>fresh)
    // Do something useful with location

Answer 2

If you could not get the location using GPS, you may need to get the location using NETWORK PROVIDER and compare with you last location fix to know which one is better and use accordingly.

Answer 3

Use NETWORK_PROVIDER instead to get updated location all time. like this..

public Location getLocation() {
        try {
            locationManager = (LocationManager) mContext
                    .getSystemService(Context.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;
                if (isNetworkEnabled) {
                    locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 0, 0, locationListenerNetwork);
//                  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);
                        if (location != null) {
                            latitude = location.getLatitude();
                            longitude = location.getLongitude();
                        }
                    }
                }
                // if GPS Enabled get lat/long using GPS Services
                if (isGPSEnabled){
                    if (location == null){
                        locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListenerGps);
//                      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);
                            if (location != null) {
                                latitude = location.getLatitude();
                                longitude = location.getLongitude();
                            }
                        }
                    }
                }
            }
//          if (!isGPSEnabled) {
//              showSettingsAlert();
//          } 
        } catch (Exception e){
            e.printStackTrace();
        }

        return location;
    }

Hope this helps