2. Conception

3. Conception
Existing System

5. Defects
• Unorganized
• Scattered
• Temporary
• Fixed Space
• Crowded

6. Conception
New System

7. Features
• Mobile
• Organized
• Compact
• Permanent
• Secured
• Personalized
• Unlimited Space

8. New System
One word

10. Introducing UNews

11. UNews
Traditional Notice Board on a mobile

12. Architecture
Super User
Special User
Client

13. Django Server

14. Django Server
• Web Framework in Python
• Agile
• Flexible
• Simplicity
• MVC Pattern

15. Architecture
Browser
Controller View
Model

16. Demo

17. Architecture
Super User
Special User
Client

18. Ajax

19. Ajax
• Asynchronous JavaScript and XML
• Well Known
• Data Transfer with No Reload
• Major Websites
Gmail,YouTube,Facebook …
are Ajax driven

22. Working
Browser Server
Create & send an Process and send
Internet
Ajax Request Response
Browser
Process using JS
Internet
and update

23. Ajax in App
1. Ajax Request
2. Processed on Server
3. JSON response from Server
4. Parsed on the mobile
5. Update the contents

24. JSON

25. JSON
• JavaScript Object Notation
• Readable
• Light Weight Data Interchange
• Language Independent
• Universal data structures
• Fast

26. JSON vs XML
• Xml format
<name>
<first>John</first>
<last>Smith</last>
</name>
• JSON format
{“first”:”John", "last”:”Smith”}

27. JSON Performance
JSON XML
Trial 1 Number Of Objects 20000 20000
Trial 1 Total Time (ms) 2213.15 61333.68
Trial 1 Average Time (ms) 0.11 3.07
Trial 2 Number Of Objects 40000 40000
Trial 2 Total Time (ms) 3127.99 123854.59
Trial 2 Average Time (ms) 0.08 3.10

28. JSON Structure
{"data": [
{"applicableto": "All Branches",
"added": "2012-01-21, 21:57",
"heading": "Holiday",
"content": "Holiday on Jan 26",
"adder": "kitscse",
"id": "4“} ]
}

29. Performance
JSON>XML>HTML

30. UNews App

31. Android

32. Android
• Open Source
• Widely Used OS
• Agile Framework
• App Freedom
• Secure
• „Google Advantage‟

33. Android Apps
• Components
– Activities
– Services
– Content Provider
– Broadcast Receiver

34. The App
• Android
• Compact
• Intuitive
• Organized
• Mobile App
• Fast

35. Demo

36. UNews Experience