?? itemcommandexample.java
字號:
import javax.microedition.lcdui.*;
import javax.microedition.midlet.*;
public class ItemCommandExample extends MIDlet implements
CommandListener, ItemCommandListener
{
private Form form;
private SmileyItem smiley;
private Command changeEmotion;
public ItemCommandExample()
{
form = new Form("Item Commands");
// create a smiley item
smiley = new SmileyItem("Smile");
// create a command to change the type and add it as a command
// onto the smiley item.
changeEmotion = new Command("Change", Command.ITEM, 1);
smiley.addCommand(changeEmotion);
// set this class to be the listener for the command
smiley.setItemCommandListener(this);
form.append(smiley);
form.addCommand(new Command("Exit", Command.EXIT, 0));
form.setCommandListener(this);
}
public void startApp()
{
Display.getDisplay(this).setCurrent(form);
}
public void pauseApp()
{
}
public void destroyApp(boolean unconditional)
{
}
// form command listener
public void commandAction(Command c, Displayable s)
{
if (c.getCommandType() == Command.EXIT)
notifyDestroyed();
}
// item command listener
public void commandAction(Command command, Item item)
{
if (command == changeEmotion)
{
smiley.change();
}
}
}
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