The document discusses key concepts for building Android apps such as activities, services, content providers, and broadcast receivers. It explains that activities represent app screens, services are for long-running background tasks, content providers manage shared app data, and broadcast receivers respond to system-wide announcements. The document also covers important files like the AndroidManifest, building app interfaces with views, and communicating between components with intents.

1. Fanzy.in

2. About me:
Gautham NS
Founder of Fanzy.in Fantasy
Cricket
@gauthamns
gauthamns@fanzy.in
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3. Why Android?
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4. Why Android?
Fastest Growing mobile OS.
● 1.5 billion apps & games
downloaded every month.
● 1 million new Android
devices every day.
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5. Why Android?
70% market share
world wide.
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6. Fanzy.in

7. Android app Building
Blocks
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8. 4 App Components
Activities
Services
Content Providers
BroadCast Receivers
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9. The Manifest File
Intents
Views
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10. Activities
An activity represents
a single screen with a
UI.
● App => Multiple
activities.
● 1 Activity is declared
main.
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11. Activity Lifecycle
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12. Activity
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13. Views
Basic Building
blocks of UI.
● A View
responsible for
drawing & event
handling.
● Organized as
Trees
● XML in resources.
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14. Tabs
Action Bar
Image Button
Image View
Text View
List View
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15. Intents
Asynchronous message.
● Move from One activity to another.
● Launch Activities, Services, Send
BroadCasts.
● Communicate between
Applications.
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16. Intents
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17. Intents
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18. Services
● Long running operations in the
background.
● No User Interface.
● Network Transactions, Music, file
Upload etc.
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20. Content Providers
Manages a shared set of app data.
● Standard interface for Storing &
retrieving data.
● Data can be stored in file system,
SQLite database, web etc.
● Contacts, Calendar etc.,
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21. Broadcast receivers
Component that responds to
system-wide broadcast announcements
● Battery Low.
● Location Change.
● Call received etc.
● Apps can also initiate broacasts.
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22. AndroidManifest file
One file to rule them all.
● Declare all your components.
● User permissions.
● Hardware & software features.
And more.
● It is an XML file.
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23. Notifications
Notification Area.
● Notification
Drawer.
● Example:
Whatsapp
message, Alarm
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24. Dev Environment:
Eclipse
Emulator
UI Editor
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25. Other important concepts
Fragments
● Resources
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26. APK (exe file for Android)
Android Application Package file
● Signed or Unsigned.
● Progaurd for obfuscation.
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27. More things:
Debugging
● Connecting your phone.
● Uploading to Google play.
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28. Fanzy.in