This document provides an overview and agenda for an Android motivation and development session. It introduces key Android concepts like activities, services, content providers, and permissions. It outlines an agenda to build a simple "Hello World" app, add additional features, and explore concepts like location services and maps. The document also discusses Android application components, lifecycles, and how learning Android can benefit career prospects and opportunities.

1. Welcome !

2. Android Motivation
Senthil ACS
senthil.acs@gmail.com

3. Why Motivation?
Motivation drives your growth
Specifically “Self Motivation”
Beneficiaries – You and your organization
Today’s Motivation – Android

4. What is Android?
It is not an Operating System….
An open source software stack build on top of Linux
Language – Java
Provides an infrastructure for advanced applications.
Helps developers use that infrastructure for apps

5. Android Development
Third party app development
Our agenda
Ability to monetize apps
http://developer.android.com
Native Platform development
Mobile Phone makers (HTC, Samsung, Motorola)
Genuine geeks
Cannot monetize
http://source.android.com

6. Android SDK
Started – Cupcake (1.5)
Current – Jelly Bean(4.1)
Your requirements
Windows/Linux/Mac
Eclipse Helios onwards (http://www.eclipse.org)
Eclipse Android Development Plugin (ADT)
Android SDK (Android JARS + Emulators)
Question – Difference between Simulator and
Emulator???

7. Simulator and Emulator
Simulator
A system designed only to test your software
Flight Simulator
Space Simulator
Obviously you cannot fly 
Emulator
Test your target architecture on another computer
Copy the real hardware and software into another
computer
Android Emulator

8. What will you learn today?
SDK Setup
Hello World Application
Adding more concepts to the application
Practical correlation of Android concepts
Writing a Location based application
Device Management

9. Agenda
Hello World Application
Application Components
Concepts
 Activity
 Service
 App Storage
 Broadcast Receivers
 Android Permissions
 Location and Maps
 Debugging
Device Management

10. Hello World App
Create a new project in Eclipse using Android SDK
You are done !!!

11. Lets try!!!

12. App Components
Source
Resources
Drawables (various screen sizes)
Layout (various screen sizes)
Strings (various languages)
Manifest
Contains all activities, services, providers, receivers,
permissions required by the application

13. Application Needs
UI (Activity)
Background Worker (Service)
App Storage (Shared Prefs, Internal/External Storage,
Content Providers)
Change receivers (Broadcast Receiver)

14. Android Activity
Anything that the application does
A UI window containing various
views (Button, TextView, Label etc) –
Similar to Java Swings
View elements may listen for user
actions
An application can have various
activities
One can start another (Opening one
window from another window) –
Using startActivity(intent)

15. Launcher Activity
The activity that shows up when the app is launched
Manifest changes
<activity android:name=".ExampleActivity"
android:icon="@drawable/app_icon">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>

16. Activity Lifecycle

17. Activity Lifecycle

18. Lets try it out!!!
Create an app
Check the Manifest for Launcher Activity
Create a Sub Activity and launch it from the main activity
Return the sub activity result to the main activity
Add some UI elements
Activity Lifecycle example – Google provided

19. Services
To run in background & no UI
Types - Started Services, Bound Services
Started Services
Owned by the application
Typically started by an activity
Bound Services
Owned by the application
Shared by others – Binder

20. Invoking a Service
startService()
Code to start a service
Intent intent = new Intent(this, HelloService.class);
startService(intent);
onStartCommand()
bindService()
onBind()
Requires an Intent action/Service class name

21. Started Service
Intent Service
Offloads to a Worker Thread
Provides a Work Queue
Stops the service once work is done
Less code
Normal Service
Manually create background thread
Multi threaded work
More code

22. Service Lifecycle

23. Lets try it out!!!
Create three Services
Intent Service – One at a time
Normal Service – One at a time
Normal Service – Multi Request
Bound Service (If time permits)
Use an Activity to launch the service
Update Manifest with the service declarations

24. Application Storage
Shared Preferences
User’s settings
Key-Value Pairs
Internal Storage
App’s private data
Cannot be accessed by other apps
External Storage
Public data
Typically sdcard

25. Content Providers
Content Providers
Identified using a URI
SQLite databases
Efficient data access
Can be accessed by other apps
Example: Read Contacts

26. Content Providers
CRUD
Create
Read
Update
Delete
API: SQLiteOpenHelper
Read and Write database
Contains CRUD methods

27. Lets try it out !!!
Create a content provider step by step
SQLiteOpenHelper instance
SQLiteDatabase instance
Implement CRUD methods
Store student name and percentage
Show the saved data

28. Listeners & Broadcast Receivers
Hey Friend! Inform us when the results are out!!
Above statement – Registration
You – Listener
Your Friend – Broadcaster
“When the results are out” – Intent

29. Listeners & Broadcast Receivers
Register for event notifications
Signal Change Notification
On boot complete Notification
Battery Notification
Location Change Notification
Etc…
Communicate results from one app to other/others

30. Listeners & Broadcast Receivers
Registration
Permanent
Register in Manifest
Example: onBootComplete
On/Off
Register/Unregister when required
Example: Location Change Notification

31. Lets try it out !!!
Create an application that will show Signal changes
Let the application be launched on Boot
Register/UnRegister signal changes

32. Intent & Intent Filter
Intent – The intention behind doing something
Used in Services example to pass data.
Intent Filter – What are my intentions?
Used in Broadcast receivers to specify what to listen to.

33. Android Permissions
Declared in Manifest
Required if your app uses Android sensitive infrastructure
Read/Write contacts
Read Network State
Read/Write External Storage (App Storage)
OnBootComplete
Etc…

34. More Concepts
More UI Concepts
 Alert Dialogs
 Date, Time dialogs
 ANR
 Pick Contacts
 Notification/Toasts
Location, Maps Activity
 Usage of Broadcast Receivers
 Use Google APIs in Android
Device Management
 Need for Securing Mobile Devices

35. UI Concepts
Dialogs
Alerts the user for info or some input
ANR – Application Not Responding
Drives the developer crazy
Never run long running tasks in UI Thread
Remember – LoaderCallbacks<CursorLoader>?
Lets try out a sample showing all the above PLUS
How to launch Contacts app

36. Location and Maps
Google APIs (MapActivity)
Obtain Maps API Key
Require Internet Permission
Maps add Overlay Items
Location Information – GPS/Network

37. Lets try it out!!!
Write a MapActivity
Register for Location from GPS/Network
Place that location onto the Map as a OverlayItem
Point using a Marker – A Pin
Permission Requirements for the App

38. Device Management
Set Password Policy
Encrypt storage
Remote Lock/Wipe
Control Camera
What is the need?

39. Lost your device?
Remotely Lock your device
Install Apps such as Lookout
Try to get the location after losing
Configure alternate numbers in Lookout
Get SMS when the SIM card is changed
More chances of getting the device back

40. We are done!!!

41. Benefits of learning Android
Massive market share (50 to 60%) of global smartphone
share.
Samsung, Motorola, Sony, LG, HTC are major players
Play Store – 500000+ apps
Get a fundoo job
Monetize your application

42. JOB !!!
Show your marks and answer simple Questions
Learn Android + One app in PlayStore
Data Structures + Algorithms + 1 Mobile Platform

43. JOB !!!
Show your marks and answer simple Questions – Service
Companies - Infosys, Wipro, HCL, CTS, TCS etc…
Android – Good Product Companies – Zomato, Zynga,
SAP, Ericsson
Data Structures + Algorithms + 1 Mobile Platform –
Premium Product Companies
Google, Yahoo, Microsoft, Akamai

44. JOB !!!
Service Companies – 2.5 to 3.5
Product Companies – 4.0 to 5.5
Premium Product Companies – 7 to 12

45. What Now !!!
Pick up Android SDK and use the developer link to kick
start
Develop small apps and relish 
Find an idea, develop it and put it in playstore.
25$ to put in PlayStore
I have an account – You can use it free
Get back to me with your questions
Android Help??
Project Help??

46. Android References
http://developer.android.com
Questions ?
http://www.stackoverflow.com
Senthil.acs@gmail.com