Lattitude and longitude of a point which is being touched in Mapview

 This is a simple android application to find the lattitude and longitude of a point which is being touched in Mapview.

First you have get the Google Api keyhttps://developers.google.com/android/maps-api-signup

After getting the Api key try the below code..

 

Google_maps.java 

package com.example.google_maps;

import java.util.List;

import com.google.android.maps.GeoPoint;

import com.google.android.maps.MapActivity;

import com.google.android.maps.MapView;

import com.google.android.maps.Overlay;

import android.os.Bundle;

import android.app.Activity;

import android.graphics.Canvas;

import android.view.Menu;

import android.view.MotionEvent;

import android.widget.Toast;

public class Google_maps extends MapActivity {

        

           @Override

           public void onCreate(Bundle savedInstanceState) {

               super.onCreate(savedInstanceState);

               setContentView(R.layout.activity_google_maps);

              

              

               MapView mapview=(MapView)findViewById(R.id.mapView);

               mapview.setBuiltInZoomControls(true);

               MapOverlay mapOverlay = new MapOverlay();

               List<Overlay> listOfOverlays = mapview.getOverlays();

               listOfOverlays.clear();

               listOfOverlays.add(mapOverlay);       

        

               mapview.invalidate();

            

           }

           class MapOverlay extends Overlay

           {

               @Override

               public boolean onTouchEvent(MotionEvent event, MapView mapView)

               {  

                   //---when user lifts his finger---

                   if (event.getAction() == 1) {               

                       GeoPoint p = mapView.getProjection().fromPixels(

                           (int) event.getX(),

                           (int) event.getY());

                           Toast.makeText(getBaseContext(),

                               p.getLatitudeE6() / 1E6 + "," +

                               p.getLongitudeE6() /1E6 ,

                               Toast.LENGTH_SHORT).show();

                          

                          

                   }                           

                   return false;

               }       

           }

           @Override

           protected boolean isRouteDisplayed() {

               return false;

           }

}

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" >

    <TextView

        android:layout_width="wrap_content"

        android:layout_height="wrap_content"

        android:layout_centerHorizontal="true"

        android:layout_centerVertical="true"

        android:text="@string/hello_world"

        tools:context=".Google_maps" />

     <com.google.android.maps.MapView

        android:id="@+id/mapView"

        android:layout_width="fill_parent"

        android:layout_height="fill_parent"

        android:apiKey="0YxUAcdaf-88HoJUjDgQS29r9ZAoGKOII8zCXsg"

        android:clickable="true"

        android:enabled="true" />

    

</RelativeLayout>

 Add  

  <uses-library android:name="com.google.android.maps" />   in Android manifest

   and give permission for accessing internet

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

 

 

 Screen shot