listexclusiveiconmidlet.java

<j2me 开发精解> 詹建光著 里所有的源码。对J2me的开发相当有帮助

package com.j2medev.sample.chapter3;

import javax.microedition.midlet.*;
import javax.microedition.lcdui.*;

public class ListExclusiveIconMidlet extends MIDlet implements CommandListener {
    
    private String[] elements = {"SUN中国技术社区", "java.net", "J2ME开发网"};
    private List list;
    private Command ok = new Command("确认", Command.OK,  0);
    private Display display = null;
    
    public ListExclusiveIconMidlet() {
        Image img1 = null;
        Image img2 = null;
        try {
            img1 = Image.createImage("/img1.png");
            img2 = Image.createImage("/img2.png");
        } catch(Exception ioe) {}
        Image[] images = {img1, img1, img2};
        list = new List("优秀站点", List.EXCLUSIVE, elements, images);
        list.addCommand(ok);
        list.setCommandListener(this);
    }
    
    public void startApp() {
        if(display==null) {
            display = Display.getDisplay(this);
            display.setCurrent(list);
        }
    }
    
    public void pauseApp() {
    }
    
    public void destroyApp(boolean unconditional) {
    }
    
    public void commandAction(Command c, Displayable d) {
        if(c==ok) {
            int selectedIndex = list.getSelectedIndex();
            String item = list.getString(selectedIndex);
            Alert alert = new Alert("系统确认", "您选择了"+item, null, AlertType.CONFIRMATION);
            alert.setTimeout(2000);
            display.setCurrent(alert, list);
        }
    }
    
}