java 如何隐藏任务栏图标

sparadise1003 2011-11-14 04:46:01

我用JFrame做了一个类似QQ消息提示的窗口，但是任务栏中一直有一个图标显示着，怎么能将这个图标隐藏掉只剩一个窗口呢？

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sparadise1003 2011-11-15

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[Quote=引用 3 楼 huntor 的回复:]

JFrame/JDialog/JWindow中JWindow不会出现在任务栏。不过你需要自己提供关闭的途径、也可以使用定时器关闭。

Java code
final JWindow messagebox = new JWindow();
....
final ActionListener action = new ActionListener(){
public void ac……
[/Quote]

我就想实现上图中俄窗口形式，这个是用JWindow做的吗？

huntor 2011-11-15

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JFrame/JDialog/JWindow中JWindow不会出现在任务栏。不过你需要自己提供关闭的途径、也可以使用定时器关闭。

final JWindow messagebox = new JWindow();

.... 

final ActionListener  action = new ActionListener(){

    public void actionPerformed(ActionEvent e){

        messagebox.dispose();

    }    

};

final Timer timer = new Timer(TimeUnit.MINUTES.toMillis(3),action);

timer.setRepeat(false);

messagebox.addWindowListener(new WindowAdapter(){

    public void windowOpened(WindowEvent e){

        timer.start();

    }

});

sparadise1003 2011-11-15

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[Quote=引用 1 楼 huntor 的回复:]

使用 JWindow
[/Quote]

是不是说，这个窗体不用JFrame，用JWindow来实现？

alansede 2011-11-15

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[Quote=引用 9 楼 sparadise1003 的回复:]
这是我再网上找到的一段代码，可以实现我想要的功能，用的是JDialog，我感觉很不错和大家分享一下。

Java code

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.FlowLayou……
[/Quote]
我想问一下那么多的import都是要一一记住的吗？还只可以查到啊？

huntor 2011-11-15

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sparadise1003 2011-11-15

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这是我再网上找到的一段代码，可以实现我想要的功能，用的是JDialog，我感觉很不错和大家分享一下。



import java.awt.BorderLayout;

import java.awt.Color;

import java.awt.Cursor;

import java.awt.Dimension;

import java.awt.FlowLayout;

import java.awt.Font;

import java.awt.Point;

import java.awt.event.MouseAdapter;

import java.awt.event.MouseEvent;

import java.awt.event.MouseMotionAdapter;

import java.text.SimpleDateFormat;

import java.util.Date;

import java.util.HashMap;

import java.util.Map;

import javax.swing.BorderFactory;

import javax.swing.ImageIcon;

import javax.swing.JLabel;

import javax.swing.JOptionPane;

import javax.swing.JPanel;

import javax.swing.JScrollPane;

import javax.swing.JTextArea;

import javax.swing.SwingConstants;

import java.awt.Insets;

import java.awt.Toolkit;

import javax.swing.JDialog;



public class VersionUtil{ 

 private Map<String, String> feaMap = null;

 private Point oldP;//上一次坐标,拖动窗口时用

 private TipWindow tw = null;//提示框 

 private ImageIcon img = null;//图像组件

 private JLabel imgLabel = null; //背景图片标签

 private JPanel headPan = null;

 private JPanel feaPan =null;

 private JPanel btnPan = null;

 private JLabel title = null;

 private JLabel head = null;

 private JLabel close = null;//关闭按钮

 private JTextArea feature = null; 

 private JScrollPane jfeaPan = null;

 private JLabel releaseLabel = null;

 private JLabel sure = null;

 private SimpleDateFormat sdf=null;

  

 {

  sdf=new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");

  feaMap = new HashMap<String, String>(); 

  feaMap.put("name", "中国信息大学固定资产管理系统");

  feaMap.put("release", sdf.format(new Date()));

  feaMap.put("feature", "1.开发环境:windows\n2.开发语言:java\n3.开发工具:Eclipse3.2\n4.数据库类型:SQL Server2005\n5.开发人员:花新昌\n6.联系方式:15210477080");

 }

 

 public VersionUtil() {

  init();   

  handle();

  tw.setAlwaysOnTop(true);    

  tw.setUndecorated(true);

  tw.setResizable(false);

  tw.setVisible(true);

  tw.run();

 }

 public void init(){   

  //新建300x220的消息提示框

  tw = new TipWindow(300, 220);  

  img = new ImageIcon("background.gif");

  imgLabel = new JLabel(img);  

  //设置各个面板的布局以及面板中控件的边界

  headPan = new JPanel(new FlowLayout(FlowLayout.CENTER, 0, 0));

  feaPan = new JPanel(new FlowLayout(FlowLayout.CENTER, 0, 0));

  btnPan = new JPanel(new FlowLayout(FlowLayout.CENTER, 0, 0));

  title = new JLabel("欢迎使用本系统");

  head = new JLabel(feaMap.get("name"));

  close = new JLabel(" x");//关闭按钮

  feature = new JTextArea(feaMap.get("feature")); 

  jfeaPan = new JScrollPane(feature);

  releaseLabel = new JLabel("登录  " + feaMap.get("release"));  

  sure = new JLabel("确定");

  sure.setHorizontalAlignment(SwingConstants.CENTER);

  

  // 将各个面板设置为透明，否则看不到背景图片

  ((JPanel) tw.getContentPane()).setOpaque(false);

  headPan.setOpaque(false);

  feaPan.setOpaque(false);

  btnPan.setOpaque(false);

  

  //设置JDialog的整个背景图片

  tw.getLayeredPane().add(imgLabel, new Integer(Integer.MIN_VALUE));

  imgLabel.setBounds(0, 0, img.getIconWidth(), img.getIconHeight());

  headPan.setPreferredSize(new Dimension(300, 60));

  

  //设置提示框的边框,宽度和颜色

  tw.getRootPane().setBorder(BorderFactory.createMatteBorder(1, 1, 1, 1, Color.gray));

  

  title.setPreferredSize(new Dimension(260, 26));

  title.setVerticalTextPosition(JLabel.CENTER);

  title.setHorizontalTextPosition(JLabel.CENTER);

  title.setFont(new Font("宋体", Font.PLAIN, 12));

  title.setForeground(Color.black);



  

  close.setFont(new Font("Arial", Font.BOLD, 15));

  close.setPreferredSize(new Dimension(20, 20));

  close.setVerticalTextPosition(JLabel.CENTER);

  close.setHorizontalTextPosition(JLabel.CENTER);

  close.setCursor(new Cursor(12));

  close.setToolTipText("关闭");



  

  head.setPreferredSize(new Dimension(250, 35));

  head.setVerticalTextPosition(JLabel.CENTER);

  head.setHorizontalTextPosition(JLabel.CENTER);

  head.setFont(new Font("宋体", Font.PLAIN, 12));

  head.setForeground(Color.blue);



  

  feature.setEditable(false);

  feature.setForeground(Color.red);

  feature.setFont(new Font("宋体", Font.PLAIN, 13));

  feature.setBackground(new Color(184, 230, 172));

  //设置文本域自动换行

  feature.setLineWrap(true);



  jfeaPan.setPreferredSize(new Dimension(250, 80));

  jfeaPan.setBorder(null);

  jfeaPan.setBackground(Color.black);

  

  releaseLabel.setForeground(Color.DARK_GRAY);

  releaseLabel.setFont(new Font("宋体", Font.PLAIN, 12));

  

  //为了隐藏文本域，加个空的JLabel将他挤到下面去

  JLabel jsp = new JLabel();

  jsp.setPreferredSize(new Dimension(300, 25));

  

  sure.setPreferredSize(new Dimension(110, 30));

  //设置标签鼠标手形

  sure.setCursor(new Cursor(12));



  headPan.add(title);

  headPan.add(close);

  headPan.add(head);

  

  feaPan.add(jsp);

  feaPan.add(jfeaPan);

  feaPan.add(releaseLabel);

  

  btnPan.add(sure);

  

  tw.add(headPan, BorderLayout.NORTH);

  tw.add(feaPan, BorderLayout.CENTER);

  tw.add(btnPan, BorderLayout.SOUTH);  

 }

 

 public void handle() { 

  //为更新按钮增加相应的事件

  sure.addMouseListener(new MouseAdapter() {

   public void mouseClicked(MouseEvent e) {

    JOptionPane.showMessageDialog(tw, "谢谢，再见");

    tw.close();

   }

   public void mouseEntered(MouseEvent e) {

    sure.setBorder(BorderFactory.createLineBorder(Color.gray));

   }

   public void mouseExited(MouseEvent e) {

    sure.setBorder(null);

   }

  });

  //增加鼠标拖动事件

  title.addMouseMotionListener(new MouseMotionAdapter(){

   public void mouseDragged(MouseEvent e) {

    // TODO Auto-generated method stub

    Point newP = new Point(e.getXOnScreen(), e.getYOnScreen());   

    int x = tw.getX() + (newP.x - oldP.x);

    int y = tw.getY() + (newP.y - oldP.y);

    tw.setLocation(x, y);

    oldP=newP;

    

   }   

  });

  //鼠标按下时初始坐标,供拖动时计算用

  title.addMouseListener(new MouseAdapter() {   

   public void mousePressed(MouseEvent e) {

    oldP = new Point(e.getXOnScreen(), e.getYOnScreen());

   }

  });

  

  //右上角关闭按钮事件

  close.addMouseListener(new MouseAdapter() {

   public void mouseClicked(MouseEvent e) {

    tw.close();

   }



   public void mouseEntered(MouseEvent e) {

    close.setBorder(BorderFactory.createLineBorder(Color.gray));

   }



   public void mouseExited(MouseEvent e) {

    close.setBorder(null);

   }

  });



 }

 public static void main(String args[]) {

  new VersionUtil();

 }

}

class TipWindow extends JDialog{   

 private static final long serialVersionUID = 8541659783234673950L;

 private static Dimension dim;   

    private int x,  y;   

    private int width,  height;   

    private static Insets screenInsets;     

  

   

    public TipWindow(int width,int height){ 

     this.width=width;

     this.height=height;

        dim = Toolkit.getDefaultToolkit().getScreenSize();   

        screenInsets   =   Toolkit.getDefaultToolkit().getScreenInsets(this.getGraphicsConfiguration()); 

        x = (int) (dim.getWidth() - width-3);   

        y = (int) (dim.getHeight()-screenInsets.bottom-3);  

     initComponents();

    }  

    public void run() {   

        for (int i = 0; i <= height; i += 10) {   

           try {   

                this.setLocation(x, y - i); 

                Thread.sleep(5);   

            } catch (InterruptedException ex) {      

            }   

        }

        //此处代码用来实现让消息提示框5秒后自动消失

        try {

   Thread.sleep(5000);

  } catch (InterruptedException e) {

   // TODO Auto-generated catch block

   e.printStackTrace();

  }

        close();

    }     

    private void initComponents() {   

        this.setSize(width, height);   

        this.setLocation(x, y);   

        this.setBackground(Color.black);        

    }    

    public void close(){

     x=this.getX();

     y=this.getY();

     int ybottom=(int)dim.getHeight()-screenInsets.bottom;

     for (int i = 0; i <= ybottom-y; i += 10) {   

            try {              

                setLocation(x, y+i); 

                Thread.sleep(5);                                   

            } catch (InterruptedException ex) {    

            }   

        } 

     dispose();

    } 

}