displayable1.java

J2ME 无线通信技术应用开发源代码

package jb_midlet_1;

import javax.microedition.lcdui.*;

public class Displayable1 extends Form implements CommandListener {
  StringItem stringItem1;
  TextField textField1;
  Gauge gauge1;
  DateField dateField1;
  Ticker ticker1;
  /**Construct the displayable*/
  public Displayable1() {
    super("My First MIDlet");
    try {
      jbInit();
    }
    catch(Exception e) {
      e.printStackTrace();
    }
  }

  /**Component initialization*/
  private void jbInit() throws Exception {
    stringItem1 = new StringItem("", "");
    textField1 = new TextField("", "", 15,TextField.ANY);
    gauge1 = new Gauge("", true, 10, 0);
    dateField1 = new DateField("",DateField.DATE_TIME);
    ticker1 = new Ticker("");
    ticker1.setString("This is Ticker");
    dateField1.setLabel("DateField");
    gauge1.setMaxValue(15);
    gauge1.setValue(8);
    textField1.setMaxSize(50);
    textField1.setString("This is a TextField");
    stringItem1.setText("This is a StringItem");
    this.setTicker(ticker1);
    this.setTitle("Form");
    // set up this Displayable to listen to command events
    setCommandListener(this);
    // add the Exit command
    addCommand(new Command("Exit", Command.EXIT, 1));
    this.append(stringItem1);
    this.append(textField1);
    this.append(gauge1);
    this.append(dateField1);
  }

  /**Handle command events*/
  public void commandAction(Command command, Displayable displayable) {
    /** @todo Add command handling code */
    if (command.getCommandType() == Command.EXIT) {
      // stop the MIDlet
      MIDlet1.quitApp();
    }
  }

}