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Martin Løbger – IT Konsulent martin.lobger@hiq.dk

Martin Løbger – IT Konsulent martin.lobger@hiq.dk. Rich vs. Reach. En introduktion til J2ME/JavaME. The Chasm. Reach Rich J2ME iPhone Android Symbian Windows Mobile. Konsulentens svære valg. Reach. ...er ikke så svært. Rich. Symbian. Eget af Nokia

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Martin Løbger – IT Konsulent martin.lobger@hiq.dk

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  1. Martin Løbger – IT Konsulent martin.lobger@hiq.dk

  2. Rich vs. Reach En introduktion til J2ME/JavaME

  3. The Chasm Reach Rich J2ME iPhone Android Symbian Windows Mobile

  4. Konsulentens svære valg Reach • ...er ikke så svært Rich

  5. Symbian • Eget af Nokia • På vej mod Open Source • Forum Nokia • Carbide.c++ C/C++ IDE • Baserete på Eclipse 3.3 + plugins

  6. Symbian OS API og C++ kode stilen static const char hellorom[] = “hello”; _LIT(KHelloROM, "hello"); const char *helloptr = hellorom; TPtrC helloPtr(KHelloROM); http://www.forum.nokia.com/Resources_and_Information/Explore/Runtime_Platforms/Symbian_C++/Code_and_Examples.xhtml

  7. Java • Udviklet af SUN Microsystems • Fortolket sprog • Bytekode • Pakket i JAR filer (zip format) • Obfuscating • Magic token: CAFEBABE

  8. J2ME

  9. MIDP – JSR 118 • javax.microedition.io • javax.microedition.lcdui • javax.microedition.lcdui.game • javax.microedition.media • javax.microedition.media.control • javax.microedition.midlet • javax.microedition.pki • javax.microedition.rms

  10. Den (langt fra) komplette JSR liste • JSR 75 File connection v1.0 and PIM v1.0 APIs • JSR 82 APIs for Bluetooth v1.1 • JSR 118 MIDP v2.1 • JSR 120 Wireless Messaging API 1.1 • JSR 135 Mobile Media API 1.1 (audio and video play, audio capture only; does not support video capture, camera control, or FM radio) • JSR 139 Connected Limited Device Configuration (CLDC) 1.1 • JSR 172 JAX-XML Web Services API (XML parsing) and JAX-RPC API • JSR 177 Security and Trust Services APIs SATSA-APDU and SATSA-CRYPTO • JSR 179 Location API 1.0 • JSR 184 Mobile Graphics API 1.1 • JSR 205 Wireless Messaging API 2.0 • JSR 211 Content Handler API 1.0 • JSR 226 Scalable 2D Vector Graphics API 1.0 • JSR 234 Advanced Multimedia Supplements (3D Audio & Music, Audio mixing, including audio progressive upload and video progressive playback) 1.1 • JSR 248 Mobile Service Architecture Subset API 1.0 • Nokia UI API 1.1a

  11. Kom godt igang • NetBeans • Eclipse Mobile Tools for Java (http://www.eclipse.org/dsdp/mtj) • Tidligere kendt som EclipseME (http://eclipseme.org) • SDK • SUN Java Platform Micro Edition SDK 3.0 http://java.sun.com/javame/downloads/sdk30.jsp • Nokia S40 http://www.forum.nokia.com/Resources_and_Information/Tools/Platforms/Series_40_Platform_SDKs • Sony Ericsson http://developer.sonyericsson.com/site/global/docstools/java/p_java.jsp • LG http://developer.lgmobile.com/lge.mdn.tnd.RetrieveTNDInfo.laf • Blackberry • Skype/Amoi • Windows Mobile

  12. Java – næsten som vi kender det J2SE J2ME import javax.microedition.midlet.MIDlet; publicclass Hello extends MIDlet { publicvoid startApp() { System.out.println("Hello, World!"); } } publicclass Hello { publicstaticvoid main(String[] args) { System.out.println("Hello, World!"); } }

  13. Hello World Demo

  14. /** * Tries to retrieve the IMEI number of the phone. Not all platforms * supports this feature. * * @return The IMEI number or "na" if the platform does not support this * feature. */ protected String getIMEI() { String[] imeiProperties = { // Generic "IMEI", "phone.imei", "device.imei", "com.imei", // Nokia specific "com.nokia.IMEI", "com.nokia.mid.imei", // Sony Ericsson specific "com.sonyericsson.imei", // Motorola specific "com.motorola.IMEI", // Samsung specific "com.samsung.imei", // Siemens specific "com.siemens.imei" }; for (int i = 0; i < imeiProperties.length; i++) { try { if (System.getProperty("microedition.platform").startsWith("Nokia6280")) { continue; } String imei = System.getProperty(imeiProperties[i]); if (imei != null) { return imei; } } catch (Exception e) { } } return "na"; }

  15. /** * Tries to retrieve the IMEI number of the phone. Not all platforms * supports this feature. * * @return The IMEI number or "na" if the platform does not support this * feature. */ protected String getIMEI() { String[] imeiProperties = { // Generic "IMEI", "phone.imei", "device.imei", "com.imei", // Nokia specific "com.nokia.IMEI", "com.nokia.mid.imei", // Sony Ericsson specific "com.sonyericsson.imei", // Motorola specific "com.motorola.IMEI", // Samsung specific "com.samsung.imei", // Siemens specific "com.siemens.imei" }; for (int i = 0; i < imeiProperties.length; i++) { try { if (System.getProperty("microedition.platform").startsWith("Nokia6280")) { continue; } String imei = System.getProperty(imeiProperties[i]); if (imei != null) { return imei; } } catch (Exception e) { } } return "na"; }

  16. byte data[] = null; HttpConnection connection = (HttpConnection)Connector.open(“http://hiq.dk/login.apsx”, Connector.READ_WRITE); try { if (postData != null) { connection.setRequestMethod(HttpConnection.POST); connection.setRequestProperty("Content-Type", "text/xml; charset=utf-8"); OutputStreamos = connection.openOutputStream(); try { os.write(postData.getBytes()); // os.flush(); //Including this line may produce undesired results on certain devices /* * If you call os.flush(), some devices will send the * request in HTTP 1.1 "chunked" encoding by adding a * "Transfer-encoding: chunked" header to the request * and writing the size of each block of data in * hexadecimal form as a text line before the data bytes * themselves. This is repeated for any number of blocks * you send, usually demarcated by calls to flush(). If * you have a HTTP 1.1-compliant Web server this should * be transparent to your server side scripts, but if * you do not, you will either want to avoid calling * flush() (though some devices may still chunk for you * automatically) or write some HTTP 1.1 chunk handling * code in your server scripts. All you will need to do * in the latter case is read the first text line of the * response, extract the size from it (i.e. "C\r\n" * where C means 12 bytes of chunk follow), and then * read 12 bytes of response data. Then read another * line to see if there is another chunk size, and * repeat until stream is closed or your script has all * the data it needs. See the HTTP 1.1 specification for * more details. */ } finally { os.close(); } }

  17. Test, test & test • Modning • Fysiske devices • Alle producenter • Bredt udsnit af modeller (eks. Nokia S40 + S60) • Skærmstørrelser • JSR features

  18. Remote Device Access Serviceshttp://apu.ndhub.net/

  19. Deploying • Bluetooth • MMS • Web Server • Mimetypes • .jar application/java-archive • .jad text/vnd.sun.j2me.app-descriptor

  20. JAD & JAR JAD – Java Descriptor JAR – Java Archive Zip fil .class filer Manifest Resources (read only) MIDlet-1: Main,,dk.hiq.helloworld.Main MIDlet-Jar-URL: [webserver]/HelloWorld.jar MIDlet-Name: PanicWorld MIDlet Suite MIDlet-Vendor: MIDlet Suite Vendor MIDlet-Version: 1.0.0 MicroEdition-Configuration: CLDC-1.1 MicroEdition-Profile: MIDP-2.1

  21. Konklusion • Reach • Tja, i teorien • Man kan dog komme langt • Code once, deploy many • Nok snarere: Code a couple of times, deploy many

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