spacerdemo.java

J2ME手机游戏开发技术详解,适合初学者阅读使用

import javax.microedition.lcdui.*;
import javax.microedition.midlet.MIDlet;
public class SpacerDemo
    extends MIDlet
    implements CommandListener{

    private Display display;
    private Form mainForm;
    private StringItem item;
    private Spacer spacer;
    private final static Command CMD_GO = new Command("Go",Command.ITEM,1);
    private final static Command CMD_PRESS =
	    new Command("Press", Command.ITEM, 1);
    private final static Command CMD_EXIT =
	    new Command("Exit", Command.EXIT, 1);
    protected void startApp() {
        display = Display.getDisplay(this);
        mainForm = new Form("Spacer演示");
        mainForm.append(new StringItem("", "BUTTON_1", Item.BUTTON));
        mainForm.append(new Spacer(80,15));
        mainForm.append(new StringItem("", "BUTTON_2", Item.BUTTON));
        mainForm.append(new Spacer(80,15));
        mainForm.append(new StringItem("", "BUTTON_3", Item.BUTTON));
        mainForm.append(new Spacer(80,15));
        mainForm.append(new StringItem("", "BUTTON_4", Item.BUTTON));
        mainForm.addCommand(CMD_EXIT);
        mainForm.setCommandListener(this);
        display.setCurrent(mainForm);
    }
    public void commandAction(Command c, Displayable d) {
            destroyApp(false);
            notifyDestroyed();        
    }
    protected void destroyApp(boolean unconditional) {
    }
    protected void pauseApp() {
    }            
}