似乎工作正常。
发布SSCCE以显示具体问题。
这是示例(我不建议getScaledInstance(..)
仅将其用于快速示例)
import java.awt.Image;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.net.URL;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JRadioButton;
import javax.swing.SwingUtilities;
public class Test {
private ImageIcon ii1;
private ImageIcon ii2;
private JRadioButton jrb = new JRadioButton("Click me :)");
private JFrame frame = new JFrame();
public Test() {
try {
ii1 = new ImageIcon(ImageIO.read(new URL("http://cdn.macrumors.com/article/2010/09/03/145454-itunes_10_icon.jpg")).getScaledInstance(48, 48, Image.SCALE_SMOOTH));
ii2 = new ImageIcon(ImageIO.read(new URL("http://www.quarktet.com/Icon-small.jpg")).getScaledInstance(48, 48, Image.SCALE_SMOOTH));
} catch (Exception ex) {
ex.printStackTrace();
}
initComponents();
}
public static void main(String args[]) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new Test();
}
});
}
private void initComponents() {
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jrb.setIcon(ii1);
jrb.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent ae) {
if (jrb.getIcon() == ii1) {
jrb.setIcon(ii2);
} else {
jrb.setIcon(ii1);
}
}
});
frame.add(jrb);
frame.pack();
frame.setVisible(true);
}
}