ProvideX On Handhelds

Transcription

1 ProvideX On Handhelds Presented by: Jarett Smith Presentation Overview Landscape of Mobile Computing Wireless Connections to Internet Challenges of Mobile Computing Why We Chose Java 2 Micro Edition Java 2 Micro Edition (J2ME) J2ME Profiles and Configurations J2ME Runtime Environments WebSphere Everyplace Micro Environment (WEME) JavX Products ProvideX WinCELink Object 1

2 Landscape of Mobile Computing A new and exciting world that has incredible potential We're entering an era where mobile software will fundamentally transform almost everything we do Cell Phone Facts: More then 1 billion cell phones in the world 700 million cell phones were sold last year million cell phone subscribers in the US In 2005, Nokia expects to sell more than 25 million smart phones, as well as 40 million mobile devices with MP3 players More powerful than desktop PCs of the late 90s Landscape of Mobile Computing PDA Facts: Over 1 million PocketPC devices shipped in the fourth quarter of 2004 RIM Blackberry subscribers now over 3 million 1 million subscribers added in less than six months ipaq has power equivalent to a three-year-old PC. 2

3 Landscape of Mobile Computing Convergence of Devices Phones now have the capabilities of PDAs, and PDAs come with built-in phones People are waking up to the power of these devices "Soon, getting a cell phone just to talk to people will be a thing of the past" -Pat Palmer, Midwest Wireless Connecting to the Internet Wireless Everywhere Wide area cellular phone/pager networks Wi-Fi or Wireless network for high speed connectivity over a range of a few hundred feet Not ubiquitous like cell phone coverage but many Cities (Chicago, Philadelphia) are building citywide wireless networks Sites like list thousands of Wi-Fi hotspots; e.g, a search of Orlando Florida turns up 68 Wi-Fi hotspots Wi-Fi is connecting an increasing assortment of devices, not just laptops and PDAs but also cameras, traffic systems, meter readers, location sensors, cell phones, etc. 3

4 Connecting to the Internet Wireless Everywhere WiMAX or Wireless network providing high speed connectivity with a range that may extend 20 miles Significant advancement recently when Intel announced it will begin worldwide shipments of WiMAX hardware May do for the internet what cell phones did for making telephone calls WiMAX has the potential to become an alternative provider of internet, telephone, and even television service According to the Telecommunications Industry Association (TIA), the WiMAX infrastructure market in the US will be worth $290 million by Challenges of Mobile Computing Creating mobile software applications has traditionally been very difficult The term "mobile devices" is applied to a wide variety of unrelated machines, including the traditional PDA, smart phones, pagers, GPS units, etc. The market is fragmented to the point that even two devices from the same vendor are often not compatible, let alone devices from different vendors 4

5 Challenges of Mobile Computing There are many vendors and no dominant player (like Microsoft is to the desktop computing world). A wide variety of hardware and software vendors means standards are not easily agreed upon Wireless Connectivity bandwidth and reliability is extremely variable While some buildings have reliable high speed wireless, many don t Outdoor devices will encounter gaps in wireless coverage and may have to rely on low bandwidth cell phone or pager networks Challenges of Mobile Computing Device Memory and Processing power is constrained and varies tremendously Mobile Devices rely on batteries with limited power; developers must consider power consumption 5

6 Java 2 Micro Edition (J2ME) Why We Chose J2ME Java Community Process Wide range of hardware and software vendors come together to agree on specifications and standards for new and existing Java APIs Currently Java-based handsets dominate market for mobile applications Several major players in handheld market (Nokia, Ericsson, Motorola, RIM, IBM, etc.) have chosen Java as their preferred development environment Java 2 Micro Edition (J2ME) Why We Chose J2ME Competitors like.net and BREW relative newcomers to field of mobile application development. The.Net Compact Framework (CFW) is only available on devices with Microsoft OS; e.g.,pocketpc or MS Smartphone Fragmentation of mobile market means that porting ProvideX C code to each device is not possible Java is emerging as common platform standard that developers can use to ensure portability across different devices 6

7 Java 2 Micro Edition (J2ME) Platform for consumer and embedded devices Mobile phones PDAs Set-top devices (interactive television) Automotive Fixed purpose consumer devices (E.G. Camcorders) Network Printers Routers Specifies Profiles Configurations Java 2 Micro Edition (J2ME) Profiles & Configurations J2ME supports vastly different hardware of mobile devices through an abstraction known as a configuration. System of profiles and configurations benefits device manufacturers and application programmers Device Manufacturers. Manufacturers choose a J2ME configuration and profile for their devices, or include a compliant JRE Application Programmers. When writing an application developers can target a J2ME configuration and profile and not a specific device 7

8 J2ME Configurations Configurations define minimum platform requirements for a group of devices Considerations Processor power Memory available Screen size Current Configurations Connected Device Configuration (CDC) Connected Limited Device Configuration (CLDC) J2ME Configurations CLDC Qualifiers Minimal Processor power Minimal Memory Network connection Example Mobile Phones RIM Blackberry Palm PDAs Hardware 16 or 32 bit CPU with 128 or 512 KB of memory CDC Qualifiers Faster Processor More Memory Faster Network connection Example Pocket PC PDA TV Set-top devices In-vehicle system Hardware 16 or 32 bit CPU with 128 or 512 KB of memory 8

9 J2ME Profiles Profiles are higher level APIs that define User interfaces available Access to device hardware Profiles, together with configurations, provide a complete JRE specification for a targeted group of devices Examples CDC Personal Profile CLDC Mobile Information Device Profile (MIDP) J2ME Profiles (CLDC) Mobile Information Device Profile (MIDP) Extends CLDC and provides a complete JRE for limited embedded devices with a network connection and a very basic user interface Mobile Phones Entry level PDAs RIM includes a CDC MIDP JRE Devices require at least Screen size 96x54 32kb of memory for JRE Network Connection Defines core functionality required by devices User Interface (UI) Network connectivity Local file access Application lifecycle control 9

10 J2ME Profiles (CDC) Foundation Profile Extends CDC and provides a complete JRE for embedded devices with a network connection but no user interface Devices require at least 1024k of ROM 512k of RAM Network Connection Example devices Network Printer Router Residential Gateways J2ME Profiles (CDC) Personal Basis Profile Extends Foundation Profile and provides a complete JRE for embedded devices with a network connection and a very basic User Interface. Example devices Interactive Television Automotive Fixed Consumer devices like a Camcorder 10

11 J2ME Profiles (CDC) Personal Profile Extends Foundation Profile and provides a complete JRE for embedded devices with a network connection and a full Graphical User Interface Devices require at least 2.5 megs of ROM 1 meg of RAM Network Connection Example devices High-end PDAs like PocketPC Game Consoles Handheld bar code scanners J2ME Runtime Environments We recommend IBM s WebSphere Everyplace Micro Environment (AKA J9) CDC Personal Profile CDC Foundation Profile CLDC MIDP Many devices are shipped with a J2ME runtime environment installed or as a companion CD Search for J2ME Java Virtual Machines on the internet and you ll find dozens of vendors 11

12 IBM WEME WebSphere Everyplace Micro Environment Production-ready Java runtime environment, tested/certified to meet J2ME specifications Pre-installed on several devices Available from Handango for $5.99 Free evaluation version (no expiration) is available from IBM www-306.ibm.com/software/wireless/weme Several different J2ME configurations and profiles are supported depending on the platform; e.g., CDC Foundation Profile, and Personal Profile for PocketPC and the Sharp Zaurus CLDC Mobile Information Device Profile (MIDP) for palmone Tungsten and PocketPC devices JavX Products JavX is a Java-based version of WindX that requires nothing on the client side but a Java2-compliant Java Virtual Machine (JVM) or a standard Web browser There are three JavX products: JavXSE Java 2 Standard Edition required JavXPP Minimum J2ME CDC Personal Profile required JavXFP Minimum J2ME CDC Foundation Profile required 12

13 JavXSE Standard desktop version of JavX Requires a Java 2 Standard Edition (J2SE) JRE, available for the following platforms: Apple OS X MS Windows 9x,NT,2000,XP Linux UNIX Supports most ProvideX (Version 6) features Download from JavXPP Standard Pocket PC (PDA) version of JavX Requires a Java 2 Micro Edition (J2ME), Connected Device Configuration (CDC) Personal Profile JRE Complete character UI support (fonts, lines and shapes, colors, pictures, etc.) Mnemonics, system functions and variables (e.g., MSE, OBJ, FIN) are supported Supports the following GUI components Buttons: BUTTON, RADIO, CHECK_BOX Text Components: LIST_BOX, MULTI_LINES, DROP_BOX Vertical and Horizontal Scroll Bars Message Box Tool bar ProvideX Menu bar menus (not popup menus) 13

14 JavXFP The most basic version of JavX Requires the most basic J2ME CDC runtime environment No character or graphical UI Runs as an invisible process Provides support for File IO on client device ProvideX OCX interface to Java Communicating with CE Devices The primary means for a desktop PC to communicate with a Windows CE device is via Remote API (RAPI) RAPI is the term most often used to describe any of the functionality exposed by Microsoft s RAPI.dll The RAPI.dll resides on the desktop and is installed when Microsoft s ActiveSync is installed 14

15 ProvideX WinCELink Object WinCELink enables ProvideX applications to talk with CE devices while they're connected to the desktop The WinCELink object is a wrapper for PvxRAPI.dll PvxRAPI.dll translates calls from ProvideX into Unicode and passes them to Microsoft s RAPI.dll ProvideX WinCELink Object Using the WinCELink object ProvideX programs can easily manipulate a CE device Determine if a CE device is connected to the desktop and communicate with it Get information about a file or directory; e.g., size, path, contents of a directory, etc. Create, delete, read, and write to files and directories Run a program on a CE device Read the CE device s registry 15

16 ProvideX WinCELink Object Example The following opens a connection to a WinCE device (PocketPC, Smartphone, etc) LET WinCELink=NEW("WinCElink") 00020!if device is attached to PC then open connect: IF WinCELink'isDeviceOnCradle() THEN { 00050! device is on the cradle try to open IF WinCELink'openConnection() THEN... ProvideX WinCELink Object Example The following lists the contents of the CE device s root directory LET WinceLink=NEW("WinCElink") 00020!if device is attached to PC then open connect: IF WinceLink'isDeviceOnCradle() THEN { 00050! device is on the cradle try to open IF WinceLink'openConnection() THEN { Dir$=WinceLink'getDirectoryListing$( / )... 16

17 ProvideX WinCELink Object File Functions getdirlisting$ ceremovedirectory cecreatefile cedeletefile cewritefile cegetfilecreationtime$ cecreatedirectory$ cegetspecialfolderpath$ cecopyfile cereadfile cegetfilesize cegetfileattributes$ ProvideX WinCELink Object Device Information Functions isdeviceoncradle waitforconnection cegetmemoryinfo$ cegetprocessorinfo$ cecreateprocess openconnection cegetdeviceosinfo$ cegetbatteryinfo$ iskeyinregistry 17

18 JavX Configuration Wizard Simplifies the setup and running of JavX on a CE device Collects arguments required by JavX and creates a shortcut that will run JavX in IBM s WEME Personal Profile JRE Creates a JavX directory on a CE device and copies the JavXPDA.jar file to it Copies the shortcut (created in step one) to the specified directory on the CE device Checks the CE device s registry to determine if IBM s WEME JRE is installed. If the JRE is not installed the JRE installer s CAB file is copied to the device and the installer is run Runs JavX on the CE device with the arguments specified JavX Configuration Wizard Meant to serve as a template/example that demonstrates the development possibilities of the PvxRAPI.dll and is not currently a supported product Not for Resale or Distribution 18

19 End of Presentation THANK YOU! 19

20 20