Thursday, September 26, 2013

Get Address from reverse geocoding android

Get Address from reverse geocoding android 

what is reverse geo coding?
Reverse geocoding is the process of back (reverse) coding of a point location (latitude, longitude) to a readable address or place name. This permits the identification of nearby street addresses, places, and/or areal subdivisions such as neighbourhoods, county, state, or country.

Activity Source Code
package com.example.reversegeocoding;

import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;

import android.os.Bundle;
import android.os.StrictMode;
import android.app.Activity;
import android.text.TextUtils;
import android.util.Log;
import android.view.Menu;
import android.widget.TextView;

public class MainActivity extends Activity {

       @Override
       protected void onCreate(Bundle savedInstanceState) {
              super.onCreate(savedInstanceState);
              setContentView(R.layout.activity_main);
              if (android.os.Build.VERSION.SDK_INT > 9) {
                     StrictMode.ThreadPolicy stricMode = new StrictMode.ThreadPolicy.Builder()
                                  .permitAll().build();
                     StrictMode.setThreadPolicy(stricMode);
              }
              TextView address_textview =(TextView)findViewById(R.id.address);
              address_textview.setText(getAddress());
       }
       public String getAddress() {
       String address1 = "";
       String  address2 = "";
       String  city = "";
       String state = "";
       String country = "";
       String county = "";
       String  PIN = "";
        String full_address = "";
        try {

            JSONObject jsonObj = getJSONfromURL("http://maps.googleapis.com/maps/api/geocode/json?latlng=" +"12.976457" + ","
                    + "77.618194" + "&sensor=true");
            String Status = jsonObj.getString("status");
            if (Status.equalsIgnoreCase("OK")) {
                JSONArray Results = jsonObj.getJSONArray("results");
                JSONObject zero = Results.getJSONObject(0);
                JSONArray address_components = zero.getJSONArray("address_components");

                for (int i = 0; i < address_components.length(); i++) {
                    JSONObject zero2 = address_components.getJSONObject(i);
                    String long_name = zero2.getString("long_name");
                    JSONArray mtypes = zero2.getJSONArray("types");
                    String Type = mtypes.getString(0);

                    if (TextUtils.isEmpty(long_name) == false || !long_name.equals(null) || long_name.length() > 0 || long_name != "") {
                        if (Type.equalsIgnoreCase("street_number")) {
                            address1 = long_name + " ";
                        } else if (Type.equalsIgnoreCase("route")) {
                            address1 = address1 + long_name;
                        } else if (Type.equalsIgnoreCase("sublocality")) {
                            address2 = long_name;
                        } else if (Type.equalsIgnoreCase("locality")) {
                            // Address2 = Address2 + long_name + ", ";
                            city = long_name;
                        } else if (Type.equalsIgnoreCase("administrative_area_level_2")) {
                            county = long_name;
                        } else if (Type.equalsIgnoreCase("administrative_area_level_1")) {
                            state = long_name;
                        } else if (Type.equalsIgnoreCase("country")) {
                            country = long_name;
                        } else if (Type.equalsIgnoreCase("postal_code")) {
                            PIN = long_name;
                        }
                       
                    }

                    full_address = address1 +","+address2+","+city+","+state+","+country+","+PIN;
                }
            }

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

    }
        public static JSONObject getJSONfromURL(String url) {

               // initialize
               InputStream is = null;
               String result = "";
               JSONObject jObject = null;

               // http post
               try {
                   HttpClient httpclient = new DefaultHttpClient();
                   HttpPost httppost = new HttpPost(url);
                   HttpResponse response = httpclient.execute(httppost);
                   HttpEntity entity = response.getEntity();
                   is = entity.getContent();

               } catch (Exception e) {
                   Log.e("log_tag", "Error in http connection " + e.toString());
               }

               // convert response to string
               try {
                   BufferedReader reader = new BufferedReader(new InputStreamReader(is, "iso-8859-1"), 8);
                   StringBuilder sb = new StringBuilder();
                   String line = null;
                   while ((line = reader.readLine()) != null) {
                       sb.append(line + "\n");
                   }
                   is.close();
                   result = sb.toString();
               } catch (Exception e) {
                   Log.e("log_tag", "Error converting result " + e.toString());
               }

               // try parse the string to a JSON object
               try {
                   jObject = new JSONObject(result);
               } catch (JSONException e) {
                   Log.e("log_tag", "Error parsing data " + e.toString());
               }

               return jObject;
           }

}

 XML Source Code

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context=".MainActivity" >

    <TextView
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:id="@+id/address"
        android:text="@string/hello_world" />

</RelativeLayout>



Check out this may be help you

Related Posts Plugin for WordPress, Blogger...