get latitude and longitude with geocoder and android Google Maps API v2

Try this solution using this example url:

http://maps.google.com/maps/api/geocode/json?address=mumbai&sensor=false

which returns data in json format with lat/lng of address.

private class DataLongOperationAsynchTask extends AsyncTask<String, Void, String[]> {
   ProgressDialog dialog = new ProgressDialog(MainActivity.this);
    @Override
    protected void onPreExecute() {
        super.onPreExecute();
        dialog.setMessage("Please wait...");
        dialog.setCanceledOnTouchOutside(false);
        dialog.show();
    }

    @Override
    protected String[] doInBackground(String... params) {
        String response;
        try {
            response = getLatLongByURL("http://maps.google.com/maps/api/geocode/json?address=mumbai&sensor=false");
            Log.d("response",""+response);
            return new String[]{response};
        } catch (Exception e) {
            return new String[]{"error"};
        }
    }

    @Override
    protected void onPostExecute(String... result) {
        try {
            JSONObject jsonObject = new JSONObject(result[0]);

            double lng = ((JSONArray)jsonObject.get("results")).getJSONObject(0)
                    .getJSONObject("geometry").getJSONObject("location")
                    .getDouble("lng");

            double lat = ((JSONArray)jsonObject.get("results")).getJSONObject(0)
                    .getJSONObject("geometry").getJSONObject("location")
                    .getDouble("lat");

            Log.d("latitude", "" + lat);
            Log.d("longitude", "" + lng);
        } catch (JSONException e) {
            e.printStackTrace();
        }
        if (dialog.isShowing()) {
            dialog.dismiss();
        }
    }
}


public String getLatLongByURL(String requestURL) {
    URL url;
    String response = "";
    try {
        url = new URL(requestURL);

        HttpURLConnection conn = (HttpURLConnection) url.openConnection();
        conn.setReadTimeout(15000);
        conn.setConnectTimeout(15000);
        conn.setRequestMethod("GET");
        conn.setDoInput(true);
        conn.setRequestProperty("Content-Type",
                "application/x-www-form-urlencoded");
        conn.setDoOutput(true);
        int responseCode = conn.getResponseCode();

        if (responseCode == HttpsURLConnection.HTTP_OK) {
            String line;
            BufferedReader br = new BufferedReader(new InputStreamReader(conn.getInputStream()));
            while ((line = br.readLine()) != null) {
                response += line;
            }
        } else {
            response = "";
        }

    } catch (Exception e) {
        e.printStackTrace();
    }
    return response;
}

Hope this will helps you.