用SWT/JFace如何获取文件图标？

int dot = file_name.lastIndexOf('.');
if (dot != -1) {
  String extension = file_name.substring(dot);
  Program program = Program.findProgram(extension);
  if (program != null){
      String typeString = program.getName();
      ImageData imageData = program.getImageData();
      if (imageData != null){
Image iconImage = new Image(null, imageData, imageData.getTransparencyMask());
      }
   }
}
这么获取的图标只是系统识别程序和文件的，请问系统文件夹图标、系统不识别文件的图标如何获取？谢谢大侠！

5 个解决方案

#1

自己設置一個呗

#2

设置一个倒是可以，但我还是想知道如何获取系统提供的~

#3

Program 是什么类我在api里查不到

#4

给你写了一个提取图标的，你可以参考看看

用法如下，输入文件的扩展名（不加），然后点按钮就能看到效果

import java.io.File;
import java.io.IOException;
import java.awt.BorderLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.JLabel;
import javax.swing.BoxLayout;
import javax.swing.filechooser.FileSystemView;
import sun.awt.shell.ShellFolder;

public class FileIconExtractor extends JFrame implements ActionListener{
private JButton getIconBtn = new JButton("get Icon");
private JPanel iconPanel = new JPanel();
private JTextField extField = new JTextField();
private JLabel smallIconLabel = new JLabel("small Icon here");
private JLabel bigIconLabel = new JLabel("big Icon here");

public FileIconExtractor() {
this.setSize(200, 150);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setLayout(new BorderLayout());
getIconBtn.setActionCommand("GETICON");
getIconBtn.addActionListener(this);
iconPanel.setLayout(new BoxLayout(iconPanel, BoxLayout.Y_AXIS));
iconPanel.add(smallIconLabel);
iconPanel.add(bigIconLabel);
this.add(extField, BorderLayout.NORTH);
this.add(iconPanel, BorderLayout.CENTER);
this.add(getIconBtn, BorderLayout.SOUTH);
this.setVisible(true);
}

public void actionPerformed(ActionEvent e) {
if (e.getActionCommand().equals("GETICON")) {
String ext = extField.getText();
File file;
try
{
     file = File.createTempFile("icon", "." + ext);
     FileSystemView view = FileSystemView.getFileSystemView();
     Icon smallIcon = view.getSystemIcon(file);
     ShellFolder shellFolder = ShellFolder.getShellFolder(file);
     Icon bigIcon = new ImageIcon(shellFolder.getIcon(true));
     setIconLabel(smallIcon, bigIcon);
     file.delete();
}
catch (IOException ioe)
{
ioe.printStackTrace();
}
}
}

private void setIconLabel(Icon smallIcon, Icon bigIcon) {
smallIconLabel.setIcon(smallIcon);
bigIconLabel.setIcon(bigIcon);
}

public static void main(String[] args) {
FileIconExtractor fie = new FileIconExtractor();
}
}

#5

回复joejoe1991
org.eclipse.swt.program.Program

回复boby
谢谢你！不过这是从JSwing里边获取，我不想在SWT/JFace中掺上JSwing的东西~难道真的没有办法了？

#1