Online Help : Event Command « J2ME « Java

Online Help


// jad file
/*
MIDlet-Name: OnlineHelp
MIDlet-Version: 1.0
MIDlet-Vendor: MyCompany
MIDlet-Jar-URL: OnlineHelp.jar
MIDlet-1: OnlineHelp, , OnlineHelp
MicroEdition-Configuration: CLDC-1.0
MicroEdition-Profile: MIDP-1.0
MIDlet-JAR-SIZE: 100

*/
import javax.microedition.lcdui.Command;
import javax.microedition.lcdui.CommandListener;
import javax.microedition.lcdui.Display;
import javax.microedition.lcdui.Displayable;
import javax.microedition.lcdui.Form;
import javax.microedition.lcdui.TextBox;
import javax.microedition.midlet.MIDlet;

public class OnlineHelp extends MIDlet implements CommandListener {
  private Display display;

  private Command back = new Command("Back", Command.BACK, 2);

  private Command exit = new Command("Exit", Command.EXIT, 1);

  private Command help = new Command("Help", Command.HELP, 3);

  private Form form = new Form("Online Help Example");

  private TextBox helpMesg = new TextBox("Online Help", "Message.", 81, 0);

  public OnlineHelp() {
    display = Display.getDisplay(this);
    helpMesg.addCommand(back);
    form.addCommand(exit);
    form.addCommand(help);
    form.setCommandListener(this);
    helpMesg.setCommandListener(this);
  }

  public void startApp() {
    display.setCurrent(form);
  }

  public void pauseApp() {
  }

  public void destroyApp(boolean unconditional) {
  }

  public void commandAction(Command command, Displayable displayable) {
    if (command == back) {
      display.setCurrent(form);
    } else if (command == exit) {
      destroyApp(false);
      notifyDestroyed();
    } else if (command == help) {
      display.setCurrent(helpMesg);
    }
  }
}

1.	Simple Command Demo
2.	Commander
3.	Various Event
4.	Commands, Items, and Event Processing
5.	Api concepts Refer to the startApp pauseApp, and destroyApp
6.	An example MIDlet with simple Hello text and an Exit command
7.	A first MIDlet with simple text and a few commands.
8.	Many Commands
9.	Mapping Commands
10.	Capture Item Events
11.	Accessing Commands
12.	A quick sample of graphics, commands, and event handling.

Online Help : Event Command « J2ME « Java

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