menulist.java

俄罗斯方块功能

package src;

import javax.microedition.lcdui.*;

public class Menulist extends List implements CommandListener{
    private Command Exit=new Command("退出",Command.EXIT,5);
    private Image icon;
    private Help help;
    private Play play;
    private Displayable instance;
    public Menulist(String[] content,Image[] imageArray,Image icon){
        super("菜单",List.IMPLICIT,content,imageArray);
        this.instance=this;
        this.icon=icon;
        this.addCommand(Exit);
        this.setCommandListener(this);
    }

    public void commandAction(Command c,Displayable d){
        if(c==Exit){
            BlockMidlet.quitApp();
        }else{
            switch(this.getSelectedIndex()){
            case 0:
                play=null;
                play=new Play(instance);
                Display.getDisplay(BlockMidlet.instance).setCurrent(play);
                break;
            case 1:
                help=null;
                help=new Help(instance);
                Display.getDisplay(BlockMidlet.instance).setCurrent(help);
                break;
            }
        }
    }
}