This is the Presentation of android application designed to trace the user location and when he reached his destination automatic message will be send to the person whom user wants to inform that he has reached his destination.

2. What is Android
 Android is a software platform and operating system
for mobile devices
 Android is available as open source
 It allows developers to write managed code in the Java
language, controlling the device via Google-developed
Java libraries

3. Android Applications Components
Android
Application
Activity
Broadcast
Receiver
Service
Content
Provider

4. Activity
 Activity provides the user a screen/interface to
interact with the application
 Activities can reuse functionality from other
components simply by making a request in the
form of an Intent
 Activities can be replaced at any time by a new
Activity with an equivalent Intent Filter

5. Service
 run in background and has no visual UI
 best example is music player application
Service
Unbound Bound

6. Broadcast Receiver
 Receive messages that are broadcasted by the Android
system or other Android applications
 Examples of broadcasts initiated by the system
 1. warning that the battery is low
 2. Screen turned off
 3. Battery is fully charged

7. Content Providers
 Flexible way to make data available across applications
 All data base, file System in system storage can be
access or even modify by any application through
content provider
 For e.g. Read contacts from system

8. Google Services for Android
Developer
 Google offers a variety of services that help you
build new revenue streams, manage app
distribution, track app usage, and enhance your
app with features such as maps etc.
 There are many services provided by Google such
as
 1. Google Map
 2. Location Service
 3. Google +

9. Location Tracer and Automatic
Message sender Application
 Features:
1) helps android users to get distance and time required to
reach his destination
2) automatic message will be send to the number set by the
user when he reached his destination
3) Show your location on Google Map
4) Get Route from your source to destination

10. Implementation
 This Android Application is implemented using
following concepts
1) Retrieving current Location at every second
2) Retrieving Geo Coordinates of Destination
3) Read Contacts
4) Send SMS
5) Use Google Direction API

11. Retrieve Current Location
 Current Location is retrieved by two ways:
1) GPS Provider
2) Network Provider
Location Manager and Location Listener are two classes
used to get the current location

12. Geo- Coordinates
 A geographic coordinate system is a coordinate system that
enables every location on the Earth to be specified by a set
of numbers or letters
 A common choice of coordinates
is latitude, longitude and elevation.

13. Retrieve Geo Coordinates
 Geocoder is the class which transform a street address
or description of location to Latitude and Longitude
 Geo Coordinates of destination are used to compare
with the current location

14. Read Contacts
 Content Provider is used to access any database from
system
 Cursor object is used to retrieve contact list.
 If any person have multiple contact number then all
the contact numbers are displayed in a list
 Selected contact number would be set in the Text Field

15. Direction API
 The Google Directions API is a service that calculates
directions between locations using an HTTP request
 It returns data in XML format
 Use XML Parsing technique to get data
 You can search for directions for several modes of
transportation, include transit, driving, walking or
cycling

16. Google Map Android API V2
 The API is distributed as part of the Google Play
services
 To access the Google Maps servers with the Maps API,
we have to add a Maps API key to your application
 We can obtain a Maps API key from the Google APIs
Console by providing our application's signing
certificate

17. Screen Shots