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					 Introduction to Developing Wireless
Applications for BlackBerry Handhelds
             Thank You

Reminder:

• Please be sure to complete your
  session evaluation forms and place
  them in the box outside the room. We
  appreciate your feedback.
                           Research In Motion
                           (RIM)



•   Founded in 1984
•   First wireless data developer in NA – 1988
•   First wireless data handheld shipped in 1997
•   BlackBerry wireless handheld launched in January 1999
    – Mobitex and DataTAC wireless paging networks
    – Two-way, packet switched, push-based email
    – Integration with Microsoft® Exchange and Lotus™ Domino®
• BlackBerry extended to 2.5G wireless networks world-wide in
  2002
        • GSM/GPRS, CDMA 1X, iDEN
        • Voice & Data Converged handheld
                BlackBerry Solution




• Leading wireless email solution for mobile professionals
• More than just a handheld PDA
   –   Wireless handheld
   –   Desktop software
   –   Enterprise server software
   –   Wireless network service (airtime) & Enterprise connectivity
• True end-to-end solution for the enterprise to increase
  productivity and provide wireless access to critical
  corporate data anytime, anywhere
     BlackBerry Handhelds
       for 2.5G Wireless
           Networks
• Wireless Email
   – Integrated with existing corporate systems
   – End-to-end Triple-DES encryption
   – PUSH
• Personal Information Management (PIM)
   – Contacts, Calendar, Tasks, Memo Pad
• Cellular Phone
   – GSM phone
   – SMS text messaging with other GSM devices
• Web Browser
   – BlackBerry Browser developed by RIM
• Open Java development platform
                   BlackBerry Handhelds
                     for 2.5G Wireless
                         Networks



• All BlackBerry handhelds on GPRS, CDMA
  1X, and iDEN networks are based on a Java 2,
  Micro Edition (J2ME) Operating Environment
• All BlackBerry applications (Email, Phone,
  Calendar, etc.) are written in Java!
            BlackBerry Handhelds for
             2.5G Wireless Networks


• Application developers can leverage:
   – Java SDK to develop a custom client application
   – BlackBerry handheld browser for browser-
     based applications
   – 2.5G wireless networks
   – HTTP connectivity to the enterprise customer‟s
     Corporate Intranet or the public Internet
   – BlackBerry end-to-end security and PUSH
     capabilities for enterprise applications
                               BlackBerry Wireless Data
                                   Platform for the
                                      Enterprise

                                                                           Email
                                                                           Server
         GPRS


                                                                HTTP(S)                        Corporate
                                                                                               Network

         iDEN                               BlackBerry                     Application
                                          Enterprise Server               & Web Servers

                        Firewall



       CDMA 1X



End-to-end 3DES Encryption for ALL data                       HTTP(S) Access to Servers on intranet
  Pull & Push Capability for ALL Data                          for browser and J2ME applications
                      BlackBerry Wireless Data
                          Platform for the
                             Enterprise

• Applications can utilize the BlackBerry Enterprise Server‟s
  Mobile Data Service (MDS) feature to securely establish
  HTTP connections behind the corporate firewall
   –   Allows the reuse of the existing wireless connections
   –   Secure, available pipe for browser or custom application data
   –   Supports pull- and push-based content
   –   BlackBerry appears as a standard client on the intranet, just like a PC!

• MDS is an open gateway that can be used by:
   – BlackBerry Browser
   – Custom J2ME Applications developed by the Enterprise
   – 3rd Party ISV/SI Solutions
                         Leveraging the Platform:
                            Toolsets Available


• Browser / Server Model
   – Client = BlackBerry Browser
   – Prosumer & Hosted Applications
       • Browser connects directly to the Internet via wireless gateway
       • Data content is hosted by 3rd Party on Internet
   – Enterprise Applications
       • Browser connects to corporate intranet via BlackBerry Enterprise Server
       • Corporate data content is hosted by the end customer behind the firewall,
         and formatted as WML/HTML pages
       • Data can also be pushed to the handheld for pro-active updates
                            Leveraging the Platform:
                               Toolsets Available



• Custom Client / Server Model
   – Client = Custom Java Application on BlackBerry Handheld
   – Prosumer Applications
       • Application connects to the Internet/intranet via the BlackBerry
         Enterprise Server or a Carrier-hosted gateway
       • Data content is hosted by 3rd Party on Internet/intranet
   – Enterprise Applications
       • Application connects to corporate intranet via BlackBerry Enterprise
         Server
       • Corporate data content is hosted by the end customer behind the firewall,
         can be formatted in any way (Plain Text, XML, etc.)
       • Data can also be pushed to the handheld for pro-active updates
                       Leveraging the Platform:
                              Summary


• Browser-Based Solutions
   – Development
       • Simpler and cheaper to develop & deploy
       • Develop server-side code only, Based on familiar web technologies
   – Limitations
       • Useless when out of coverage
       • Navigating through web pages can be tedious and slow
• Java Client-Based Solutions
   – Development
       • Java 2, Micro Edition (including BlackBerry-specific APIs)
       • Customizable user interface and application behavior
       • Persistent data storage, useful out of coverage and quicker access to data
   – Limitations
       • Resource-intensive development and testing required
Developing Browser-Based
 Solutions for BlackBerry
                             BlackBerry Browser
                                Development




• Client is the BlackBerry Browser
   – Standard “web page-based” user interface and navigation
   – Able to display data formatted in standard mark-up
       • WML 1.3, WML Script 1.2
       • WBMP, PNG, GIF image types
       • cHTML (subset of HTML)
   – Support for Pull- and Push-based Content (depends on gateway being
     used!!)
                           BlackBerry Browser:
                         Server-Side Development


• Can use any standard tools to publish the content on Internet
  or intranet web servers
   – Static Content:
       • cHTML or WML pages
   – Dynamic Content:
       • Java Server Pages (JSPs) or Active Server Pages (ASPs)
       • Perl Script
• Enterprise customers running BlackBerry Enterprise Server
  can also write server-side PUSH applications
                        BlackBerry Browser:
                               PUSH



• BlackBerry-defined push types:
   – “Channel Push”
      • Push an icon to the ribbon along with a web page to the cache
      • The icon acts as a permanent „channel‟ to the referenced URL
   – “Message Push”
      • Push a message to the users inbox that automatically launches the
        browser to a specified page (cached or not)
   – “Cache Push”
      • Push a page to the browser‟s cache, but do not notify the user
                                           BlackBerry Browser:
                                                    PUSH
                                              Pushing a Web Page:
              URL = “http://myBesServer.myCo.net:8300/push?DESTINATION=joe@myco.net&PORT=7874”;
              myHttpConnection.setRequestProperty("x-rim-push-type", “browser-message”);
Server App:   myHttpConnection.setRequestProperty(“content-location", “http://localhost/mySfa/inventory.wml”);




Message
  Push:




Channel
  Push:
Developing J2ME Applications
       for BlackBerry
                                   BlackBerry Java
                                    Development


• In a custom client/server solution, the client is a custom
  BlackBerry Java application, compiled with the BlackBerry
  JDE
• BlackBerry JDE v3.2.1
   –   Released in 2002
   –   Based on Java 2, Micro Edition: MIDP & CLDC 1.0
   –   Full featured IDE with Simulators & Optimization tools
   –   Includes BlackBerry Java API extensions
        •   Robust & customizable User Interface APIs
        •   System Interfaces (Trackwheel, Event listeners, etc.)
        •   Extended Utilities
        •   Support for PUSH-based wireless applications
               BlackBerry Java APIs:
                   CLDC & MIDP

    The standard J2ME API libraries include:
javax.microedition.lcdui
   User interface library (Screens, Fields, etc.)
javax.microedition.rms
    Record Management System (data storage)

java.io
    Standard java input/output library
java.lang
    Standard java extended language library
java.util
    Standard java utilities library
javax.microedition.io
    J2ME-specific input/output library (HttpConnection)
                         BlackBerry Java APIs:
                            RIM Extensions
                      BlackBerry Java API Extensions:


net.rim.device.api.system
    BlackBerry system-level library (Event Listeners, Radio Info)
net.rim.device.api.ui
    Fundamental user interface library (Screen Managers, Fields)
net.rim.device.api.ui.container
    UI objects that contain other elements (MainScreen, PopupScreen)
net.rim.device.api.ui.component
    UI objects that reside within a container (EditField, ListField)
net.rim.device.api.util
    Extended utilities library
net.rim.device.api.i18n
    Internationalization support (enables support for multiple languages)
                J2ME Environment for
                     BlackBerry




                    Java Applications

      APIs for BlackBerry               J2ME APIs
     (UI, System, Utilities, etc.)      (MIDP & CLDC)

              Java Virtual Machine

BlackBerry Handheld (Radio, LCD, RAM, Keyboard etc.)
          RIM Integrated Development Environment




Workspace view




                            Full Featured
                            Editor

          Class Browser
                       Powerful Debugger


                  Comprehensive debug views




                               Code Profiler
                  Coverage Analysis




                                  Conditional Breakpoints
Expressions and
Variables
              BlackBerry JDE:
                 Simulators



1) Handheld


2) MDS


3) Radio
                                                           BlackBerry Java
                                                         Application Example
                                                                 Sample Expense
                                                               Reporting Application:




Local list of Reports              List of Current Expenses    Customized form for efficient    Submit Report Wirelessly
                                                                       data entry


                                                                          HTTP(S)               ODBC/API


                        Wireless                          BlackBerry Server       Servlet / Web App     Expense System
                 Java Development for
                BlackBerry: Tips & Tricks


• Use wireless resources effectively
   – Optimize data for transport
   – Use PUSH and Always-On technology to your
     advantage
   – “Streaming” data is not yet practical (for the network
     OR the pocket-book!!)
• Forms applications can be built as browser-based
  solutions or custom Java applications
   – Browser pages are easy to develop for custom
     corporate solutions
   – Local Java app enables optimized control of user
     interface, data storage, and wireless transport
         Java Development for
        BlackBerry: Tips & Tricks


• Wireless Enterprise Solutions
   – Understand what corporate data makes sense on
     a wireless handheld
   – Sort, filter, and analyze data on the server as
     much as possible
Thank You for Attending!

				
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posted:7/8/2011
language:English
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