Interactive Gauge
/*--------------------------------------------------
* InteractiveGauge.java
*
* Example from the book: Core J2ME Technology
* Copyright John W. Muchow http://www.CoreJ2ME.com
* You may use/modify for any non-commercial purpose
*-------------------------------------------------*/
import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;
public class InteractiveGauge extends MIDlet implements CommandListener
{
private Display display; // Reference to display object
private Form fmMain; // The main form
private Command cmExit; // Exit the form
private Gauge gaVolume; // Volume adjustment
public InteractiveGauge()
{
display = Display.getDisplay(this);
// Create the gauge and exit command
gaVolume = new Gauge("Sound Level", true, 30, 4);
cmExit = new Command("Exit", Command.EXIT, 1);
// Create form, add commands, listen for events
fmMain = new Form("");
fmMain.addCommand(cmExit);
fmMain.append(gaVolume);
fmMain.setCommandListener(this);
}
// Called by application manager to start the MIDlet.
public void startApp()
{
display.setCurrent(fmMain);
}
public void pauseApp()
{ }
public void destroyApp(boolean unconditional)
{ }
public void commandAction(Command c, Displayable s)
{
if (c == cmExit)
{
destroyApp(false);
notifyDestroyed();
}
}
}
Related examples in the same category
