import java.awt.AWTException;
import java.awt.MenuItem;
import java.awt.PopupMenu;
import java.awt.SystemTray;
import java.awt.TrayIcon;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
public class TrayDemo extends JFrame {
private TrayIcon trayIcon = null; // 托盤圖標
private SystemTray tray = null; // 本操作系統托盤的實例
public static TrayDemo trayDemo = new TrayDemo();
private TrayDemo() {
init();
}
public void init() {
if (SystemTray.isSupported()) { // 如果操作系統支持托盤
this.tray();
}
this.setSize(300, 200);
this.setResizable(false);
// 窗口關閉時觸發事件
addWindowListener(new WindowAdapter() {
public void windowClosing(WindowEvent e) {
System.exit(0);
}
public void windowIconified(WindowEvent e) {
try {
tray.add(trayIcon); // 將托盤圖標添加到系統的托盤實例中
//setVisible(false); // 使窗口不可視
dispose();
} catch (AWTException ex) {
ex.printStackTrace();
}
}
});
}
private void tray() {
tray = SystemTray.getSystemTray(); // 獲得本操作系統托盤的實例
ImageIcon icon = new ImageIcon("images/30.gif"); // 將要顯示到托盤中的圖標
PopupMenu pop = new PopupMenu(); // 構造壹個右鍵彈出式菜單
MenuItem show = new MenuItem("打開程序(s)");
MenuItem exit = new MenuItem("退出程序(x)");
pop.add(show);
pop.add(exit);
trayIcon = new TrayIcon(icon.getImage(), "車輛管理系統", pop);
/**
* 添加鼠標監聽器，當鼠標在托盤圖標上雙擊時，默認顯示窗口
*/
trayIcon.addMouseListener(new MouseAdapter() {
public void mouseClicked(MouseEvent e) {
if (e.getClickCount() == 2) { // 鼠標雙擊
tray.remove(trayIcon); // 從系統的托盤實例中移除托盤圖標
setExtendedState(JFrame.NORMAL);
setVisible(true); // 顯示窗口
toFront();
}
}
});
show.addActionListener(new ActionListener() { // 點擊“顯示窗口”菜單後將窗口顯示出來
public void actionPerformed(ActionEvent e) {
tray.remove(trayIcon); // 從系統的托盤實例中移除托盤圖標
setExtendedState(JFrame.NORMAL);
setVisible(true); // 顯示窗口
toFront();
}
});
exit.addActionListener(new ActionListener() { // 點擊“退出演示”菜單後退出程序
public void actionPerformed(ActionEvent e) {
System.exit(0); // 退出程序
}
});
}
/**
* 顯示信息
*/
// 返回單壹的實例對象
public static TrayDemo getInstanceTrayDemo() {
return trayDemo;
}
// 處理窗口事件
}