Android Reverse Geocoding at touched location in Google Map Android API V2

Step 1 :- Create New Android Project.



Step 2 :- Add Google-play-services_lib to your project.

Step 3 :- Open AndroidManifest.xml file.

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.mapv2.demo"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="16" />
   
    <permission
          android:name="com.mapv2.demo.permission.MAPS_RECEIVE"
          android:protectionLevel="signature"/>
   
    <uses-permission android:name="com.mapv2.demo.permission.MAPS_RECEIVE"/>
   
    <uses-permission android:name="android.permission.INTERNET"/>
    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
    <uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
   
    <uses-feature
      android:glEsVersion="0x00020000"
      android:required="true"/>
   
    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.mapv2.demo.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
       
        <meta-data
            android:name="com.google.android.maps.v2.API_KEY"
            android:value="AIzaSyCmX7SLVHXxU9pSqb2QbAOvdnjAGUulOrk"/>
       
    </application>

</manifest>

Step 4 :- Open activity_main.xml.

<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"
    tools:context=".MainActivity" >

    <fragment xmlns:android="http://schemas.android.com/apk/res/android"
          android:id="@+id/map"
          android:layout_width="match_parent"
          android:layout_height="match_parent"
          class="com.google.android.gms.maps.SupportMapFragment"/>
</RelativeLayout>

Step 5 :- Open MainActivity.java

package com.mapv2.demo;

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

import android.content.Context;
import android.location.Address;
import android.location.Geocoder;
import android.os.AsyncTask;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.view.Menu;

import com.google.android.gms.maps.CameraUpdateFactory;
import com.google.android.gms.maps.GoogleMap;
import com.google.android.gms.maps.GoogleMap.OnMapClickListener;
import com.google.android.gms.maps.SupportMapFragment;
import com.google.android.gms.maps.model.LatLng;
import com.google.android.gms.maps.model.MarkerOptions;

public class MainActivity extends FragmentActivity {
   
    GoogleMap googleMap;
    MarkerOptions markerOptions;
    LatLng latLng;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);       
       
        SupportMapFragment supportMapFragment = (SupportMapFragment)
                getSupportFragmentManager().findFragmentById(R.id.map);

        // Getting a reference to the map
        googleMap = supportMapFragment.getMap();
       
        // Setting a click event handler for the map
        googleMap.setOnMapClickListener(new OnMapClickListener() {
       
            @Override
            public void onMapClick(LatLng arg0) {               
               
                // Getting the Latitude and Longitude of the touched location
                latLng = arg0;
               
                // Clears the previously touched position
                googleMap.clear();
               
                // Animating to the touched position                               
                googleMap.animateCamera(CameraUpdateFactory.newLatLng(latLng));               
               
                // Creating a marker
                markerOptions = new MarkerOptions();
               
                // Setting the position for the marker
                markerOptions.position(latLng);                       
               
                // Placing a marker on the touched position
                googleMap.addMarker(markerOptions);
               
                // Adding Marker on the touched location with address
                new ReverseGeocodingTask(getBaseContext()).execute(latLng);               
               
            }
        });
    }
   
    private class ReverseGeocodingTask extends AsyncTask<LatLng, Void, String>{
        Context mContext;
       
        public ReverseGeocodingTask(Context context){
            super();
            mContext = context;
        }

        // Finding address using reverse geocoding
        @Override
        protected String doInBackground(LatLng... params) {
            Geocoder geocoder = new Geocoder(mContext);
            double latitude = params[0].latitude;
            double longitude = params[0].longitude;
           
            List<Address> addresses = null;
            String addressText="";
           
            try {
                addresses = geocoder.getFromLocation(latitude, longitude,1);
            } catch (IOException e) {
                e.printStackTrace();
            }
           
            if(addresses != null && addresses.size() > 0 ){
                Address address = addresses.get(0);
               
                addressText = String.format("%s, %s, %s",
                        address.getMaxAddressLineIndex() > 0 ? address.getAddressLine(0) : "",
                        address.getLocality(),                       
                        address.getCountryName());               
            }
           
            return addressText;
        }       
       
        @Override
        protected void onPostExecute(String addressText) {
            // Setting the title for the marker.
            // This will be displayed on taping the marker
            markerOptions.title(addressText);
           
            // Placing a marker on the touched position
            googleMap.addMarker(markerOptions);
                                   
        }
    }   

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.activity_main, menu);
        return true;
    }   
}

Step 6 :- Run Code.

Step 7 :- Download Code :- https://dl.dropboxusercontent.com/u/109954727/Map/map4.zip