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