Google APIs 
& 
Location Based Applications
-Krishna Achanta
krishna.achanta@gmail.com
Prerequisites

Eclipse with Android SDK and AVD Manager
Google Apis
Java
XML
Android device[or Emulator] to test
Agenda:
1. Google Maps Api for Android.
        For applications using Google MapViews

2. Android Location Package.
        The classes required to access the users location without having to use maps.
MapView
Adding Google APIs

Obtaining Maps Key

Using MapActivity

Showing current location

Adding Overlay items
MapView: Adding Google APIs
All you need. [not really]
http://code.google.com/android/add-ons/google-apis/index.html



MapView: Obtaining Maps Key
Generate Certificate
keytool -genkey -v -keystore droid_kids.keystore -alias droid_kids -keyalg RSA -keysize 2048 -validity 10000

Get Fingerprint of the certificate
keytool -list -alias droid_kids -keystore droid_kids.keystore
Fingerprint is : E0:9D:58:9F:B2:CD:5C:9C:42:8B:60:0F:23:BC:24:11

Register the fingerprint with Google Maps Service
http://code.google.com/android/maps-api-signup.html
Key is: 0zu3JWra9vK5LxswGR1V4Wh3SztudX-UjgLWLJA

MapView: Create Maps Activity
Include Maps library


Add permissions




Create a MapView layout and add the key
                xmlns:android="http://schemas.android.com/apk/res/android"
                android:id="@+id/mapview"    
                android:layout_width="fill_parent"    android:layout_height="fill_parent"
                android:clickable="true"    
                android:apiKey="0zu3JWra9vK5LxswGR1V4Wh3SztudX-UjgLWLJA"/>




MapView Coding
Layers

Zoom

Center

Overlays

MyLocation
Find Location
Location Sources

LocationManager & Location Providers

Criteria

LocationListener

locationManager.requestLocationUpdates(bestProvider, time, distance , locationListener);
Questions
OUT OF TIME
References
- http://developer.android.com/guide/topics/location/index.html

- http://code.google.com/android/add-ons/google-apis/

- http://www.anddev.org/index.php

- http://itouchmap.com/latlong.html [For finding location coordinates].