backmenuscreen.java

PDA餐饮管理系统,在掌上电脑实现的,可以开台,点菜等多功能模块

package junwei;

import javax.microedition.lcdui.*;
import rms.*;
import item.*;

/**
 * 退菜界面	
 * @author hong
 *
 */
public class BackMenuScreen extends InputScreen implements CommandListener{

	private static BackMenuScreen instance;

	private static StringItem siTableNo;
	private static StringItem siMenuId;
	private String menuID;
	private static TextField textNum;
	private static SyscodeChoice choiceReason;

	synchronized public static BackMenuScreen getInstance() {
		if (instance == null)
			instance = new BackMenuScreen();
		siTableNo.setText(MainScreen.getInstance().getCurTableNo());
		return instance;
	}

	private BackMenuScreen() {
		super("退菜");
		
		siTableNo=new StringItem("桌台号：","",Item.PLAIN);
		append(siTableNo);
		
		siMenuId=new StringItem("退菜名称：","",Item.PLAIN);
		append(siMenuId);
		addCommand(new Command("选择菜品", Command.OK, 1));
      		
		textNum=new TextField("退菜数量：","1",10,TextField.NUMERIC|Item.PLAIN);
		append(textNum);
		
		choiceReason=new SyscodeChoice(3);
		append(choiceReason);
		
		addCommand(new Command("发送", Command.OK, 1));
		addCommand(new Command("取消", Command.CANCEL, 1));
		setCommandListener(this);
	}
	
	
	public void commandAction(Command c, Displayable s) {
		String cmd = c.getLabel();
        if (cmd.equals("发送")) {
	 		GetDataThread t = new GetDataThread();
			t.init(GetDataThread.rt_work,"BackMenuServlet?tableNo="
					+ siTableNo.getText()+"&posId="
					+ MainMidlet.posID	+"&menuID="+menuID
					+"&userId="+MainMidlet.glbUserID
					+"&num="+textNum.getString()+"&reasonId="+choiceReason.getSelectID());
			
			t.start();
			Navigator.flow("确定");
		}
		else if (cmd.equals("选择菜品")) {
			SelectMenuScreen selectMenuScreen=new SelectMenuScreen();
			selectMenuScreen.initTag(2);
			Navigator.display.setCurrent(selectMenuScreen);
		}
		else
    		Navigator.flow(cmd);
	}

	public void setSelect(Menu aMenu){
		siMenuId.setText(aMenu.getMenuName());
		menuID=aMenu.getMenuId();
	}
}