Introduction to Android

1. A
PRESENTATION
ON
By
Mr. Ravindra Jagannath Mandale
Assistant Professor
Department of Computer Science & Engineering
RIT, Rajaramnagar

2. Mobile computing
What is Android ?
OHA
Android’s market shares
Android features
Why to learn Android?
Developers angle
Android platform
Architecture
Tools in android
Examples of advanced apps
Conclusion

3. Mobile devices are making a significant change in our
daily life and we are increasingly rely on mobile
devices.
Need of Mobile OS.
Eg. Google’s Android, Microsoft’s Windows Mobile,
Apple’s iOS, etc.

4. Android is a software stack for mobile devices that
includes an operating system, middleware and key
applications.
Linux kernel based O.S. found by Andy Rubin in 2005.
Google ->OHA (Open Handset Alliance)
The first truly open and comprehensive platform for
mobile devices such as smart phones or tablet
computers.

5. A business alliance consisting of 47 companies to develop
open standards for mobile devices.

6. According to GARTNER SURVEY (The world's leading
information technology research and advisory company)

7. Android’s UI includes windows, views and widgets.
Android provides an integrated browser engine- Webkit
SQLite for structured data storage
Provides 2D and 3D graphics with OpenGL library
Supports Bluetooth, Wi-Fi, GPRS, EDGE,3G,GSM telephony,
media, camera, compass, accelerometer (hardware
dependent)

8. A simple and powerful SDK
No licensing, distribution, or development fees
Development over many platform Linux, Mac OS,
Windows, etc.
Excellent documentation
Prize (amazon’s kindle)
Job opportunity

9. How to make money?
Creation of innovative apps
Ads
Creation of paid app
Creating app in like to the market demand
Immediate correct ions of app functionalities after taking input from users
Creating update for the app
Challenges
Varity of devices
Choice of technology
Continuous innovation in your app
Quality
Flexibility of product
Changing market trends

12.  Providing environment on which every Android application
runs
 Each Android application runs in its own process, with its
own instance of the Dalvik VM.
 Dalvik has been written such that a device can run multiple
VMs efficiently.
 Executing the Dalvik Executable (.dex) format
 .dex format is optimized for minimal memory footprint.
 Compilation process

13. Views:
-Building block for UI components.
Eg.button,textview,etc.
Activities:
-An activity is a user interface concept. An activity usually
represents a single screen in your application. It generally contains
one or more views.
-Interaction with users: creating a window to place UI
-full screen windows, floating windows, embedded inside of
another activity
-Eg. Registration, Messaging GUI

14. Services
-Background processes for long durations and higher priority than
inactive activities.
- No UI and used for responding for events, eg. N/W operation
Intent
-Inter-communication among activities or services
Resource
-Externalization of strings and graphics
Broadcast receivers
-A broadcast receiver is a component that responds to systemwide
broadcast announcements. Many broadcasts originate from the
system.
-No UI

15. Notification
-signaling users: Light, sound, icon, dialog, notification
-Eg. new message arrives
Content Providers
-share data between applications
-Android defines a standard mechanism for applications
to share data (such as a list of contacts) without exposing
the underlying storage, structure, and implementation.

16. An Android project contains all the files that includes the source
code for our Android app. The Android SDK tools make it easy to
start a new Android project with a set of default project
directories and files.
Two ways:
1) Eclipse (with the ADT plugin)
2) SDK tools from a command line

17. The Android Emulator(AVD)
-Implementation of the Android virtual machine
-Test and debug your android applications.
-limitations include USB connections, camera and video capture,
headphones, battery simulation, and Bluetooth.
Dalvik Debug Monitoring Service (DDMS)
-Monitor and control the DVM
-Logcat (to see logged messages)

19. ANDROID DEBUG BRIDGE(ADB)
-Manage the state of an emulator instance or Android-
powered device
-Copy files, install compiled application packages, and run
shell commands

21. Traceview
-Graphical analysis tool for viewing the trace logs
from your Android application
-Debug your application and profile its performance
MkSDCard :
-Creates an SDCard disk image

22. Foundation of an Android application.
Identify any user permissions the application requires, such as
Internet access or read access to the user’s contacts.
Declare the minimum API Level required by the application, based
on which APIs the application uses.
Declare hardware and software features used or required by the
application, such as a camera, bluetooth services, or a multitouch
screen.
API libraries the application needs to be linked against (other than
the Android framework APIs), such as the Google Maps library.

23. Symbian:
Symbian is only used by Nokia hence Nokian OS
Source code for Symbian is not available to anybody
Main feature- Multitasking
We cant create applications in this platform since it is licensed
Android :
More modern and user friendly
Easier to use than Symbian
Open source operating system
feature- Multitasking and it allows to create applications for free
Used in many new models

24. Evernote apps
-to prepare notes regarding courses & it has reminder tool.
-to record lecture in classes
Share your Board apps
-to capture blackboard image in the class
Quickpedia
-easily access Wikipedia on our phone
Google docs apps
-edit and access our document with the help of any computer

25. Now a days, Android powers millions of phones, tablets and other
devices in a wide variety of screen sizes and form factors. By taking
advantage of Android’s flexible layout system, we can create
applications that gracefully scale from large tablets to smaller phones.
There are different useful security application programs and services
are available for Android whereby a registered users can find the
approximate location of the phone. This helps to locate lost or stolen
phones.

26. For downloading sdk you can visit to following
website:
http://developer.android.com/sdk/installing/index.ht
ml?pkg=adt

27. The Android Application Development College
Challenge- IEEE
Online development guide
http://developer.android.com/guide/index.html