1. Programming YOUR Mobile Phone
Professor Simon M. Lucas
School of Computer Science and Electronic Engineering

2. Mobile (Cell) Phones First prototype: Motorola 1973
Commercial cell phones :
NTT Japan 1979
Motorola 1983
DynaTAC 8000X ($4,000)
Subscribers:
300,000 in 1984
Over 3,000,000,000 now!
So much more than just a telephone…

3. Samsung Galaxy S II (2011) Android phone
GPS, Motion Sensors, Video etc
Powerful processor
3G WIFI Router!
1gb RAM + 8 GB Flash mem + SD
1.2Ghz dual core processor (licenced from ARM)
800 x 480 Super AMOLED Plus screen
Kindle!
Programmable in Java
Very open marketplace for apps

4. Tetris Developed by Alexei Pajitnov in 1985
With the help of Dmitry Pavlovsky and Vadim Gerasimov
Popular in the west in 1986
The classic ‘casual game’ of all time

5. EA Mobile
Tetris is frequently top of the sales charts for mobile games
But seems to be losing out on smartphones (e.g. iPhone, Android)
Why?

6. Run Demo

7. Tetris and Java WORA: Write Once, Run Anywhere?

8. Well, almost…
The Java language may vary slightly between versions available for each platform
New platforms such as Android have significant new APIs
API = Application Programmer Interface
Some effort needed to port an application to a new platform
But at least with Android, you can use the familiar Java language

9. Developing Mobile Java Apps
Write Java for mobile platform
Using suitable API / platform e.g. Android
Test on emulator or device
Deploy to mobile marketplace?
Or direct to phone
E.g. Android Market
Can be free or paid-for apps
Get detailed download and usage stats
Use the stats to refine your app…

10. Android Market

11. Software Design

12. Divide and Conquer

13. Modelling Tetris: Object Oriented Approach
Objects group together:
Data
Actions that can be performed on them:
Methods
In Java, each object is of a particular class
Programming: design classes
Make objects of those classes
What sort of classes might you design for Tetris?

14. And we get … Controller View Model Main loop + event handling
Only concerned with display of game objects
Model
Game model (2d array of blocks)
Shape model

15. Class Diagram

16. Main Loop

17. Event Handling

18. move() method of Shape

19. Careful: how not to wait!

20. Summary Mobile phones: incredible technology
RF, hardware, telecoms, software
Programming should be (and is!) lots of fun
Java’s a great language – Android is a great mobile platform
Modern IDEs take the pain out of software development
Study computing and electronics: be part of a bright future!