cardcasemenu.java

J2ME程序设计实例教程的源码

import javax.microedition.lcdui.*;
import javax.microedition.pim.PIMException;
import java.io.IOException;

/**
 * CardcaseMenu类描述了应用程序的菜单
 */
public class CardcaseMenu extends List implements CommandListener {
    private final String[] ITEMS = {"  浏览名片", "  名片分组管理"};
    private CardcaseMIDlet midlet;
    private Command cmdExit = new Command("退出", Command.EXIT, 1);
    private Command cmdSelect = new Command("选择", Command.ITEM, 2);
    
    public CardcaseMenu(CardcaseMIDlet midlet) {
        super("名片管理器", IMPLICIT);
        this.midlet = midlet;
        Image imges[] = null;
        try {
            imges = new Image[] {
                Image.createImage("/browse.png"),
                Image.createImage("/grouping.png")
            };
        }
        catch(IOException ioe) {
            //
        }
        for(int i=0; i<ITEMS.length; i++) {
            this.append(ITEMS[i], imges[i]);
        }
        
        this.addCommand(cmdExit);
        this.setSelectCommand(cmdSelect);
        this.setCommandListener(this);
    }
    
    public void commandAction(Command cmd, Displayable d) {
        if(cmd == cmdExit) {
            midlet.exit();
        }
        else if(cmd == cmdSelect) {
            switch(this.getSelectedIndex()) {
                case 0: {
                    try {
                        midlet.browseCards();    //浏览名片
                    }
                    catch(PIMException pime) {
                        midlet.showError("浏览名片错误！原因：\n"+pime.toString());
                    }
                    break;
                }
                case 1: {
                    midlet.groupManager();
                    break;
                }
            }
        }
    }
}