helpform.java

这是一个Java编写的手机象棋游戏

import javax.microedition.lcdui.*;

public class HelpForm extends Form implements CommandListener,ItemCommandListener
{
	private MainSelect	mainSelect = null;
	private Command		exit = null, enter = null;
	private StringItem	baseItem,errorItem;
	
	public HelpForm(MainSelect ms)
	{
		super("欢迎进入帮助中心");
		mainSelect = ms;
		//基本界面
		exit = new Command("退出", Command.EXIT,1);
		enter = new Command("进入", Command.OK,1);
		addCommand(exit);
		setCommandListener(this);
		//Item组件
		baseItem = new StringItem(null, "基本使用方法", Item.PLAIN);
		errorItem = new StringItem(null, "错误解释", Item.PLAIN);
		append(baseItem);
		append("\n");
		append(errorItem);
		baseItem.setDefaultCommand(enter);
		baseItem.setItemCommandListener(this);
		errorItem.setDefaultCommand(enter);
		errorItem.setItemCommandListener(this);
	}
	public void commandAction(Command com, Displayable dis)
	{
		if(com == exit && dis == this)
			Chess.dis.setCurrent(mainSelect);
	}
	public void commandAction(Command com, Item item)
	{
		if(item.equals(baseItem))
		{
			
		}
		if(item.equals(errorItem))
		{
			
		}
	}
};