[java]Inserire immagine in jlist

[lordkarolus]

ho una jlist e dovrei inserire un'immagine prima del testo come posso fare?

[andbin]

Originariamente inviato da lordkarolus
ho una jlist e dovrei inserire un'immagine prima del testo come posso fare?

Prova questo codice:

import java.awt.*;
import java.net.*;
import javax.swing.*;

public class TestFrame extends JFrame
{
    public TestFrame ()
    {
        super ("Test Frame");

        try {
            ImageIcon icon1 = new ImageIcon (new URL ("http://img517.imageshack.us/img517/2383/gattominirq3.jpg"));
            ImageIcon icon2 = new ImageIcon (new URL ("http://img517.imageshack.us/img517/7184/schedcanedr6.jpg"));

            JLabel[] labels = { new JLabel ("Un gatto", icon1, SwingConstants.LEFT),
                                new JLabel ("Un cane", icon2, SwingConstants.LEFT) };

            JList list = new JList (labels);

            list.setCellRenderer (new MyListCellRenderer ());

            JScrollPane scrollPane = new JScrollPane (list);
            add (scrollPane);
        } catch (MalformedURLException e) { }

        setDefaultCloseOperation (JFrame.EXIT_ON_CLOSE);
        setSize (300, 300);
    }

    public static void main (String[] args)
    {
        SwingUtilities.invokeLater (new Runnable()
        {
            public void run ()
            {
                TestFrame f = new TestFrame ();
                f.setVisible (true);
            }
        });
    }
}

class MyListCellRenderer implements ListCellRenderer
{
    public Component getListCellRendererComponent (JList list, Object value, int index, boolean isSelected, boolean cellHasFocus)
    {
        JLabel label = (JLabel) value;

        if (isSelected)
        {
            label.setBackground (list.getSelectionBackground ());
            label.setForeground (list.getSelectionForeground ());
        }
        else
        {
            label.setBackground (list.getBackground ());
            label.setForeground (list.getForeground ());
        }

        label.setEnabled (list.isEnabled ());
        label.setOpaque (true);
        return label;
    }
}