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Developing Software for Wireless Devices

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Presentation on theme: "Developing Software for Wireless Devices"— Presentation transcript:

1 Developing Software for Wireless Devices
Robert Hatch Sean Meredith James Pate Williams, Jr.

2 Overview Sun Java SDK 1.3 Forte Sun Java Micro Edition
Packages of MIDP

3 Desirable Software Components
Sun Java Software Development Kit Sun Forte 3.0 Integrated Development Environment Sun Java 2 Micro Edition Wireless Toolkit All are freely downloadable from Sun and require at least a 450 MHz Pentium II with 128 MB of RAM

4 Sun Java 2 SDK 1.3 Improvements more robust than previous Java SDKs
sound API that includes a MIDI synthesizer and sequencer support for the Java 2 Micro Edition Wireless Toolkit

5 Sun Forte 3.0 Integrated Development Environment for Java programming
comparable to Borland’s JBuilder 5.0 constructed using Java a resource hog

6 Sun Java2 ME Wireless Toolkit
Version can be used either in integrated mode with Forte 3.0 or as a stand alone product. The integrated version is easier for code development and testing The Wireless Toolkit implements a Mobile Information Device Profile (MIDP) for some common wireless devices

7 Wireless Toolkit The toolkit includes the following emulators:
default grey phone minimum phone Motorola i85s Palm OS device RIM Java handheld

8 Wireless Toolkit The emulators can function fairly closely to read devices in terms of the GUIs that they offer.

9 Java Mobile Information Device Profile (MIDP)
Consists of five packages: user interface package persistence package application lifecycle package networking package core packages

10 User Interface Package
Listener interfaces ChoiceAPI CommandListener ItemStateListener Buttons defined as commands actions can be captured by implementing the CommandListener interface, e.g. by defining the commandAction method

11 User Interface Package: Common GUI Elements
Alert Canvas Command ChoiceGroup DateField Display Font Form Gauge Graphics Image Item List Screen Ticker

12 Persistence Package Components Associated class RecordComparator
RecordEnumeration RecordFilter RecordListener Associated class RecordStore - a class representing a record store

13 Application Lifecycle Package
Defines Mobile Information Device Profile applications and interactions between the application and the environment in which the application runs Class associated MIDlet - MIDP application on the device States Paused Active Destroyed

14 MIDlet Life Cycle

15 Networking Package Components Connection ContentConnection Datagram
DatagramConnection HttpConnection InputConnection

16 Networking Package Components Associated class OutputConnection
StreamConnection StreamConnectionNotifier Associated class Connector - placeholder for the static methods that are used for creating all the Connection jobs.

17 Networking Package Support for stream connections (TCP/IP) and datagram connections (UDP/IP) TCP/IP - connection-oriented protocol; reliable and in-order delivery of packets UDP/IP - connectionless-oriented protocol; unreliable and possibly out-of-order delivery of packets

18 Networking Package (Cont.)
Some wireless devices such as Palm OS devices do not offer the datagram protocol and only use stream connections Java MIDP supports HTTP connections TCP/IP networking is fairly straightforward and only requires a few lines of code to implement

19 Core Packages java.lang java.util

20 Wireless Device Software Development Steps
Create a MIDlet suite template using Forte 3.0 Fill in the MIDlet details to incorporate desired functionality Execute code on various emulators; the same code behaves differently on distinct platforms Port code to desired device Test on an actual wireless device

21 Demo

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