Google Map V2 geocoder returns null

Question

following is my code for google map v2 geocoding. I am getting latitude and longitude from map on longclick listener. I want to decode this latitude and longitude to get addresses. But my address size always returns zero. Whats going wrong don't know.

 Log.i("lat long", ": "+arg0.latitude+","+arg0.longitude); 
 Log.i("Geocoder returns", ": "+geocoder.getFromLocation(arg0.latitude,arg0.longitude,1));
               addresses = geocoder.getFromLocation(arg0.latitude,arg0.longitude,1);
               Log.i("Print address array", ": "+addresses.size()+","+addresses);

score 1 · Answer 1 · answered Sep 06 '13 at 11:44

 private String getAddress(Double lat, Double lng)
 {

    try 
    {
      Geocoder geocoder = new Geocoder(this, Locale.getDefault());
      List<Address> addresses = geocoder.getFromLocation(lat, lng, 1);
      StringBuilder sb = new StringBuilder();
      if (addresses.size() > 0) 
      {
        Address address = addresses.get(0);

        sb.append(address.getLocality()).append(", ");
        sb.append(address.getCountryName());
      }

     String addressString = sb.toString();
     return addressString;
    } 
    catch (IOException e) 
    {
        return "No Address Found";
    }

}

now see the address returning from the function.

score 0 · Answer 2 · answered Aug 31 '13 at 06:42

0

According to documentation:

Returns null or empty list if no matches were found or there is no backend service available.

so probably geocoder is not able to determine address for given coordinates.

Make sure that you declare INTERNET permission in your manifest.

<uses-permission android:name="android.permission.INTERNET" />

answered Aug 31 '13 at 06:42

trebron

356
1
4

what is this backend service – Umesh Suryawanshi Aug 31 '13 at 06:44
Internet permission is used in manifest. When Long click on map, I am able to get lat long, but from lat long, address is not getting. – Umesh Suryawanshi Aug 31 '13 at 06:46
geocoding service is provided by Google and called internally by Geocoder API – trebron Aug 31 '13 at 06:46
please post sample latitude, longitude pair for which you don't receive any results – trebron Aug 31 '13 at 06:47
lat long : 5.103488681754595,100.49531120806932 – Umesh Suryawanshi Aug 31 '13 at 06:54
I read document provided by you, but for each and every click it give empty address. My lat long range is under required lat long range for geocoder. – Umesh Suryawanshi Aug 31 '13 at 06:56
Is isPresent() method from Geocoder returning true on your device? – trebron Aug 31 '13 at 09:03
I got my answer, no need to change code, as given above. When I tried same code and run this on other device, it shows perfect output. I was device problem. – Umesh Suryawanshi Sep 14 '13 at 07:20

score 0 · Answer 3 · answered Aug 31 '13 at 06:48

This is what i used:

package com.exercise.AndroidFromLocation;

import java.io.IOException;
import java.util.List;
import java.util.Locale;

import android.app.Activity;
import android.location.Address;
import android.location.Geocoder;
import android.os.Bundle;
import android.widget.TextView;

public class AndroidFromLocation extends Activity {

double LATITUDE = 37.42233;
double LONGITUDE = -122.083;

   /** Called when the activity is first created. */
   @Override
   public void onCreate(Bundle savedInstanceState) {
       super.onCreate(savedInstanceState);
       setContentView(R.layout.main);
       TextView myLatitude = (TextView)findViewById(R.id.mylatitude);
       TextView myLongitude = (TextView)findViewById(R.id.mylongitude);
       TextView myAddress = (TextView)findViewById(R.id.myaddress);

       myLatitude.setText("Latitude: " + String.valueOf(LATITUDE));
       myLongitude.setText("Longitude: " + String.valueOf(LONGITUDE));

       Geocoder geocoder = new Geocoder(this, Locale.ENGLISH);

       try {
  List<Address> addresses = geocoder.getFromLocation(LATITUDE, LONGITUDE, 1);

  if(addresses != null) {
   Address returnedAddress = addresses.get(0);
   StringBuilder strReturnedAddress = new StringBuilder("Address:\n");
   for(int i=0; i<returnedAddress.getMaxAddressLineIndex(); i++) {
    strReturnedAddress.append(returnedAddress.getAddressLine(i)).append("\n");
   }
   myAddress.setText(strReturnedAddress.toString());
  }
  else{
   myAddress.setText("No Address returned!");
  }
 } catch (IOException e) {
  // TODO Auto-generated catch block
  e.printStackTrace();
  myAddress.setText("Canont get Address!");
 }

   }
}

Print address array : 0,[] This is output, that means there was nothing stored inside array. — Umesh Suryawanshi, Aug 31 '13 at 08:13
https://developers.google.com/maps/documentation/javascript/examples/geocoding-reverse also does not return any results for your test location (37.42233,-122.083) - it simply can not be reverse geocoded. — trebron, Aug 31 '13 at 09:07
You might want to take a look at this [custom Geocoder](http://stackoverflow.com/a/15117087/1396082) — Snehal Poyrekar, Aug 31 '13 at 10:09

score 0 · Answer 4 · answered Oct 30 '13 at 04:48

The android geocoder is not stable and most of the time I got null as well. So, we switch to use the Google Map API Web Service. It's much better IMO.

Below is the code we use. Basically, just use the httpClient to send GET request and the response is in JSON format.

public class GoogleGeocodingService implements GeocodingService {
    private static final Logger LOGGER = LoggerFactory.getInstance().getLogger(GoogleGeocodingService.class);
    private static final String DEFAULT_LANG = "en";
    private HttpClient httpClient;

    /**
     * Get httpClient.
     *
     * @return the httpClient
     */
    public HttpClient getHttpClient() {
        return httpClient;
    }

    /**
     * Set httpClient.
     *
     * @param httpClient
     *            the httpClient to set
     */
    public void setHttpClient(HttpClient httpClient) {
        this.httpClient = httpClient;
    }

    @Override
    public String getSimpleReverseLocation(double latitude, double longitude) throws Exception {
        return getSimpleReverseLocation(latitude, longitude, DEFAULT_LANG);
    }

    @Override
    public String getSimpleReverseLocation(double latitude, double longitude, String language) throws Exception {
        List<BasicNameValuePair> params = new ArrayList<BasicNameValuePair>();
        addParameter(params, "latlng", Double.toString(latitude) + "," + Double.toString(longitude));
        addParameter(params, "language", language);
        addParameter(params, "sensor", "true");
        String response = getContent("http://maps.googleapis.com/maps/api/geocode/json", params);
        try {
            GeocodingResponse r = handleResponse(response, GeocodingResponse.class);
            return r.getShortFormattedAddress();
        } catch (Exception e) {
            LOGGER.error(e.toString());
            return "";
        }
    }

    private static void addParameter(List<BasicNameValuePair> parameters, String key, String value) {
        parameters.add(new BasicNameValuePair(key, value));
    }

    private String getContent(String url, List<BasicNameValuePair> parameters) throws Exception {
        url = HttpClientUtils.createGetUrl(url, parameters);

        //LOGGER.debug("URL: %s", url);
        return HttpClientUtils.getContent(httpClient, new HttpGet(url), new InputStreamToStringConverter());
    }

    private <T> T handleResponse(String response, Class<T> clz) throws IOException {
        //LOGGER.debug("Response: %s", response);
        int first = StringUtils.indexOf(response, '{');
        //LOGGER.debug("first position of '{' = %d", first);
        if (first > 0) {
            response = StringUtils.substring(response, first);
            LOGGER.debug("Response: after clean server side error html from json response: %s", response);
        }
        return JacksonUtils.parse(response, clz);
    }

}

Google Map V2 geocoder returns null

4 Answers4