Geocoder Often Returns Null Vallues In Android
I am trying to pass geocoder values from MapFragment to LocationDetailsActivity. I get the correct values for lat and lng, but when I try to display any of the other values, most
Solution 1:
Android's geocoding api is pretty unreliable up-to my experience, I usually make a request to the Google's geocoding webservices on Url : "https://maps.googleapis.com/maps/api/geocode"
(If you are familiar with retrofit)
@GET("/json")
void reverseGeoCode(@Query("latlng") String latlng, @Query("language") String language,
@Query("key") String key, Callback<ReverseGeoCode> callback);
latlng The latitude and longitude you want to reverse geocode.
language language of the geocoded response
key Your Api key
Solution 2:
Geocoder often got the values right, but more often than not I got null values. Based on @insomniac's advice I modified my code:
publicvoidonMapLongClick(final LatLng arg0) {
RequestQueue queue = Volley.newRequestQueue(getActivity());
String url = "https://maps.googleapis.com/maps/api/geocode/json?latlng=" + String.valueOf(arg0.latitude) + "," + String.valueOf(arg0.longitude) + "&key=myKeyCode";
// Request a string response from the provided URL.StringRequest stringRequest = newStringRequest(Request.Method.GET, url,
newResponse.Listener<String>() {
@OverridepublicvoidonResponse(String response) {
try {
JSONArray jObj = newJSONObject(response).getJSONArray("results").getJSONObject(0).getJSONArray("address_components");
Intent intent = newIntent(getActivity(), LocationDetailsActivity .class);
for (int i = 0; i < jObj.length(); i++) {
String componentName = newJSONObject(jObj.getString(i)).getJSONArray("types").getString(0);
if (componentName.equals("postal_code") || componentName.equals("locality")) {
intent.putExtra(componentName, newJSONObject(jObj.getString(i)).getString("short_name"));
}
}
intent.putExtra("latitude", arg0.latitude);
intent.putExtra("longitude", arg0.longitude);
startActivity(intent);
} catch (JSONException e) {
e.printStackTrace();
}
}
}, newResponse.ErrorListener() {
@OverridepublicvoidonErrorResponse(VolleyError error) {
int x = 1;
}
});
// Add the request to the RequestQueue.
queue.add(stringRequest);
It still displays some areas as null. But those are smaller areas. Hope someone finds it helpful.
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