在Java中动态更新SystemTray
作者:互联网
是否可以在Java中的SystemTray中将项目添加到PopUpMenu?我试图将项目添加到菜单,但这没用.都不会添加它并调用TrayIcon.setPopMenu(PopUpMenu)以及之后的SystemTray.add(TrayIcon)方法.有什么建议么?
解决方法:
当然可以.
看到我做的这个例子:
import java.awt.AWTException;
import java.awt.CheckboxMenuItem;
import java.awt.Image;
import java.awt.Menu;
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.ItemEvent;
import java.awt.event.ItemListener;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.JOptionPane;
import javax.swing.SwingUtilities;
public class Test {
public Test() throws Exception {
initComponents();
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
try {
new Test();
} catch (Exception ex) {
ex.printStackTrace();
}
}
});
}
private void initComponents() throws Exception {
createAndShowTray();
}
private void createAndShowTray() throws Exception {
//Check the SystemTray is supported
if (!SystemTray.isSupported()) {
System.out.println("SystemTray is not supported");
return;
}
PopupMenu popup = new PopupMenu();
//retieve icon form url and scale it to 32 x 32
final TrayIcon trayIcon = new TrayIcon(ImageIO.read(
new URL("http://www.optical-illusions.in/illusions/blue_rotation_optical_illusion.jpg"))
.getScaledInstance(32, 32, Image.SCALE_SMOOTH), null);
//get the system tray
final SystemTray tray = SystemTray.getSystemTray();
// Create a pop-up menu components
MenuItem aboutItem = new MenuItem("About");
aboutItem.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent ae) {
JOptionPane.showMessageDialog(null, "About");
}
});
final CheckboxMenuItem cb1 = new CheckboxMenuItem("Set tooltip");
cb1.addItemListener(new ItemListener() {
@Override
public void itemStateChanged(ItemEvent ie) {
if(cb1.getState()==true) {
trayIcon.setToolTip("Hello, world");
}else {
trayIcon.setToolTip("");
}
}
});
Menu displayMenu = new Menu("Display");
MenuItem infoItem = new MenuItem("Info");
MenuItem exitItem = new MenuItem("Exit");
//add actionlistner to exit menu item
exitItem.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent ae) {
System.exit(0);
}
});
//Add components to pop-up menu
popup.add(aboutItem);
popup.addSeparator();
popup.add(cb1);
popup.addSeparator();
popup.add(displayMenu);
displayMenu.add(infoItem);
popup.add(exitItem);
trayIcon.setPopupMenu(popup);
try {
tray.add(trayIcon);
} catch (AWTException e) {
System.out.println("TrayIcon could not be added.");
}
}
}
参考文献:
标签:system-tray,swing,jpopupmenu,java 来源: https://codeday.me/bug/20191031/1977666.html