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Understanding the Structure of MIDlets: A Basic and Detailed Overview

This guide provides an in-depth understanding of the structure of MIDlets in Java ME. It covers both a simple version and a more detailed explanation of the MIDlet lifecycle, including key methods such as startApp(), pauseApp(), and destroyApp(). You'll learn about state changes in MIDlets, handling exceptions, and properties related to the MIDlet. Additionally, the role of Application Management Software (AMS) is explored, along with essential permissions and platform requests, offering comprehensive insights for developers working with mobile applications.

brittany-harrell
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Understanding the Structure of MIDlets: A Basic and Detailed Overview

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  1. MIDP og MIDlets

  2. Grundlæggende MIDlet struktur BasicMidlet: • Simpel udgave • Mere detaljeret udgave

  3. MIDlet tilstandsgram

  4. Tilstandsændringer

  5. class MIDlet Fra package javax.microedition.midlet:: public abstract class MIDlet protected MIDlet() {...} protected abstract void startApp() throws MIDletStateChangeException; protected abstract void pauseApp(); protected abstract void destroyApp(boolean unconditional) throws MIDletStateChangeException; public final void notifyDestroyed() {...} public final void notifyPaused() {...} public final String getAppProperty(String key) {...} public final void resumeRequest() {...} public final boolean platformRequest(String URL) throws ConnectionNotFoundException {...} public final int checkPermission(String permission) {...} public class MIDletStateChangeException extends Exception public MIDletStateChangeException() {...} public MIDletStateChangeException(String s) {...}

  6. MIDlet AMS (Application Management Software) notifyDestroyed() notifyPaused() resumeRequest() getAppProperty() platformRequest() checkPermission() startApp() pauseApp() destroyApp() AMS (Application Management Software)

  7. MIDlet package HelloMIDlet • source kode • jad- og MF filer

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