infoform.java

来自「J2ME 从入门到精通（程序开发使用案例） 书中代码」· Java 代码 · 共 60 行

/*
 * InfoForm.java
 *
 * Created on 2006年12月20日, 上午2:43
 *
 * To change this template, choose Tools | Template Manager
 * and open the template in the editor.
 */

package cn.edu.uestc.pandarss;
import javax.microedition.lcdui.*;
/**
 *
 * @author pandaxiaoxi
 */
/*--------------------------------------------------
 * InfoForm.java
 *
 * 显示状态信息的工具类
 *-------------------------------------------------*/

public class InfoForm extends Form implements CommandListener {
    private Command cmBack;
    private StringItem Message;
    private RSSReader midlet;
    public InfoForm(RSSReader midlet) {

        super("状态信息");

        this.midlet = midlet;

        cmBack = new Command("Back", Command.BACK, 2);

        Message = new StringItem("请等待......", "");

        addCommand(cmBack);
        append(Message);
        setCommandListener(this);
    }
/*--------------------------------------------------
 * Event processing
 *-------------------------------------------------*/
    public void commandAction(Command c, Displayable s) {
        if (c == cmBack) {
		//清理内存
        }
        midlet.display.setCurrent(midlet.lsRSSSources);
    }
/*--------------------------------------------------
 * setMessage
 * 设置并显示状态信息
 *-------------------------------------------------*/
    public void setMessage(String Message) {
	//设置要显示的信息
        this.Message.setText(Message); 
	//在设备屏幕上显示该Form对象
        midlet.display.setCurrent(this); 
    }
}