java系统托盘(代码)

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该例子共有2个类文件和一个图片文件夹

MainFrame类:定义程序界面
SetTrayIcon类:定义程序系统托盘功能

使用规则:
SetTrayIcon类可以不用修改,直接使用.
只需要在程序构造函数中插入两句即可:
第一句:new SetTrayIcon(this); //调用SetTrayIcon(JFrame)类,设置程序系统托盘功能
第二句:this.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE); //关键.设置窗口关闭处理,与关闭窗体事件搭配

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import java.awt.*;import java.awt.event.*;import javax.swing.*;public class MainFrame extends JFrame {//以下两标签为窗口界面图片JLabel l_img;JLabel l_img2;public MainFrame(){l_img=new JLabel(new ImageIcon(this.getClass().getClassLoader().getResource("images//netbean1.png")));l_img2=new JLabel(new ImageIcon(this.getClass().getClassLoader().getResource("images//netbean2.png")));l_img.setBounds(15,15,l_img.getIcon().getIconWidth(),l_img.getIcon().getIconHeight());l_img2.setBounds(15,15+l_img.getIcon().getIconHeight()+20,l_img2.getIcon().getIconWidth(),l_img2.getIcon().getIconHeight());add(l_img);add(l_img2);this.setTitle("Java托盘测试");this.setSize(500,350);this.setResizable(false);this.setLayout(null);center();//调用窗体于屏幕居中函数new SetTrayIcon(this);//调用SetTrayIcon(JFrame)类,设置程序系统托盘功能this.setVisible(true);this.setDefaultCloseOperation(JFrame.DO_NOTHING_ON_CLOSE);//关键.设置窗口关闭处理,与关闭窗体事件搭配}//设置窗体于屏幕居中函数private void center() { Dimension screenSize=Toolkit.getDefaultToolkit().getScreenSize(); //获得屏幕的尺寸 Dimension jframeSize=this.getSize();//获得程序尺寸 setLocation((screenSize.width-jframeSize.width)/2,(screenSize.height-jframeSize.height)/2);}public static void main(String[] args) {new MainFrame();}}

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import java.awt.*;import java.awt.event.*;import javax.swing.*;public class SetTrayIcon implements ActionListener{PopupMenu pop;MenuItem open,close;TrayIcon trayicon;//任务栏程序托盘图标JFrame jframe;public SetTrayIcon(JFrame jframe){this.jframe=jframe;initComponents();//初始化程序托盘组件}//设置编译阶段禁用警告提示@SuppressWarnings("unchecked")//初始化程序托盘组件private void initComponents(){pop=new PopupMenu();open=new MenuItem("打开");open.addActionListener(this);close=new MenuItem("退出");close.addActionListener(this);pop.add(open);pop.add(close);//检查平台是否受支持系统托盘if(SystemTray.isSupported()){SystemTray tray=SystemTray.getSystemTray();ImageIcon imageIcon=new ImageIcon("images/user_edit.png"); //获得托盘显示图标Image icon=imageIcon.getImage();//获得Image对象//Image icon=this.getToolkit().getImage(this.getClass().getClassLoader().getResource("images/user_edit.png"));trayicon=new TrayIcon(icon,"java系统托盘",pop);//为托盘添加鼠标事件,双击则打开程序界面trayicon.addMouseListener(new MouseAdapter(){public void mouseClicked(MouseEvent e){if(e.getClickCount()==2){openFrame();}}});try{tray.add(trayicon);}catch(AWTException e){e.printStackTrace();}}//为程序添加窗体事件jframe.addWindowListener(new WindowListener(){public void windowActivated(WindowEvent arg0) {// TODO Auto-generated method stub}//隐藏程序于系统托盘函数public void windowClosed(WindowEvent arg0) {// TODO Auto-generated method stubjframe.setVisible(false);jframe.dispose();}public void windowClosing(WindowEvent arg0) {// TODO Auto-generated method stubint a=JOptionPane.showConfirmDialog(jframe,"按 [是] 退出,[否] 隐藏?","提示",0); if(a==0){System.exit(0);}else if(a==1){jframe.setVisible(false);}}public void windowDeactivated(WindowEvent arg0) {// TODO Auto-generated method stub}public void windowDeiconified(WindowEvent arg0) {// TODO Auto-generated method stub}//窗口最小化public void windowIconified(WindowEvent arg0) {// TODO Auto-generated method stubjframe.setVisible(false);//jframe.dispose();}public void windowOpened(WindowEvent arg0) {// TODO Auto-generated method stub}});}//为右击托盘菜单添加事件public void actionPerformed(ActionEvent e){if(e.getSource()==open){openFrame();}if(e.getSource()==close){System.exit(-1);}}//显示程序界面函数public void openFrame(){jframe.setVisible(true);jframe.setAlwaysOnTop(true);}}

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