Getting longitude and latitude takes a very long time

Question

I am getting the longitude and latitude of my device, but it takes at 30 seconds to a minute to do so. Any suggestions to cut the time down?

public class MainActivity extends Activity
{
public String zipcode;
public double latG;
public double lonG;

@Override
protected void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    LocationManager service = (LocationManager) getSystemService(LOCATION_SERVICE);
    boolean enabled = service.isProviderEnabled(LocationManager.GPS_PROVIDER);

    if (!enabled) 
    {
      Intent intent = new Intent(Settings.ACTION_LOCATION_SOURCE_SETTINGS);
      startActivity(intent);
    }

    LocationManager locationManager = (LocationManager) getSystemService(Context.LOCATION_SERVICE);
    locationManager.getLastKnownLocation(Context.LOCATION_SERVICE);
    LocationListener locationListener = new LocationListener()
    {

         public void onLocationChanged(Location location) 
         {
                if (location != null) 
                {
                    latG = location.getLatitude();
                    lonG = location.getLongitude();
                    Toast.makeText(MainActivity.this,
                            latG + " " + lonG,
                            Toast.LENGTH_LONG).show();
                }
            }
            public void onProviderDisabled(String provider) 
            {

            }

            public void onProviderEnabled(String provider) 
            {

            }

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

            }



    };
    locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 0, 0, locationListener);



    Geocoder geocoder = new Geocoder(this, Locale.getDefault());
    List<Address> addresses = null;
    try 
    {
        addresses = geocoder.getFromLocation(latG, lonG, 1);
    } 
    catch (IOException e) 
    {
        Context context = this;
        AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(context);
        alertDialogBuilder.setTitle("Error");
        alertDialogBuilder.setMessage("Error in getting address information.");
        alertDialogBuilder.setCancelable(true);

    }

    for (Address address : addresses) 
    {
        if(address.getPostalCode() != null)
        {
            zipcode = address.getPostalCode();
            Toast.makeText(MainActivity.this, zipcode, Toast.LENGTH_LONG).show();
            break;
        }
    }

}

}

Answer 1

You are using GPS_PROVIDER for fetching the GPS data. GPS_PROVIDER fetches details directly from the satellite so it takes time for the first time you load this. Moreover GPS_PROVIDER takes more than 30 seconds if your are not below the open sky. GPS_PROVIDER may return NULL when you are inside the office or in basement.

There is an alternative way for this is to use NETWORK_PROVIDER. This provider will give you GPS details based on your current Network state. This will not be much accurate like GPS_PROVIDER but it works faster.