java - 系统托盘上的空白图标

Question

我正在尝试向系统托盘添加一个图标，但是，当我运行该应用程序时，该图标为空白。

我的项目结构是这样的:

root/
  libs/
    ...
  src/
    com/
      projname/
        logic/
          ...
        ui/
          MyClass.java
          ...
  res/
    icon.png

我正在尝试在 MyClass.java 中添加图标，如下所示:

private void addToSystemTray() throws AWTException {

    if (!SystemTray.isSupported()) {
        return;
    }

    // get the SystemTray instance
    SystemTray tray = SystemTray.getSystemTray();

    // load an image
    Image image = Toolkit.getDefaultToolkit().getImage(getClass().getClassLoader().getResource("icon.png"));

    // construct tray icon
    TrayIcon trayIcon = new TrayIcon(image, "My Project");

    // add the tray image
    tray.add(trayIcon);
}

我在 IntelliJ 上将 res/文件夹标记为资源根，并且我还构建了 .jar 来检查图标是否已添加到其中 - 它是.

我做错了什么？

Answer 1

很可能您的图像大于托盘图标大小并被裁剪。这就是您看到图标为空白的原因。所以你必须设置，trayIcon.setImageAutoSize(true);

Java文档:

public void setImageAutoSize(boolean autosize)

Sets the auto-size property. Auto-size determines whether the tray image is automatically sized to fit the space allocated for the image on the tray. By default, the auto-size property is set to false.

If auto-size is false, and the image size doesn't match the tray icon space, the image is painted as-is inside that space — if larger than the allocated space, it will be cropped.

If auto-size is true, the image is stretched or shrunk to fit the tray icon space.