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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?DESTINATIONemail@example.com&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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