Question

所以我已经成功地在我的小程序中实现了搜索功能，但是当我点击按钮进行排序时，它工作正常，但图像不显示。这是我为分拣机添加的代码，它工作正常，但每行的图像都没有显示。当我取出此代码时，图像会显示但排序不起作用。在排序时我可以将图像显示出来吗？

    // Sorter Code. Images show up when this code gets taken out.
    table = new JTable(model);
    final TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(model);
    table.setRowSorter(sorter);
    search_button.addActionListener(new ActionListener() {
        public void actionPerformed(ActionEvent e) {
          String text = search.getText();
          if (text.length() == 0) {
            sorter.setRowFilter(null);
          } else {
            sorter.setRowFilter(RowFilter.regexFilter(text));
          }
        }
      });
   // sorter code ends here.

Answer 1

必须将JTable视图与其模型
查看方法convertXxxIndexToXxx
将int modelRow = convertRowIndexToModel(row);添加到Renderer或prepareRenderer
example convertRowIndexToModel

修改

import java.awt.BorderLayout;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Font;
import java.util.regex.PatternSyntaxException;
import javax.swing.*;
import javax.swing.event.DocumentEvent;
import javax.swing.event.DocumentListener;
import javax.swing.table.*;

public class TableIcon extends JFrame implements Runnable {

    private static final long serialVersionUID = 1L;
    private JTable table;
    private JLabel myLabel = new JLabel("waiting");
    private int pHeight = 40;
    private boolean runProcess = true;
    private int count = 0;
    private JTextField filterText = new JTextField(15);

    public TableIcon() {
        ImageIcon errorIcon = (ImageIcon) UIManager.getIcon("OptionPane.errorIcon");
        ImageIcon infoIcon = (ImageIcon) UIManager.getIcon("OptionPane.informationIcon");
        ImageIcon warnIcon = (ImageIcon) UIManager.getIcon("OptionPane.warningIcon");
        String[] columnNames = {"Picture", "Description"};
        Object[][] data = {{errorIcon, "About"}, {infoIcon, "Add"}, {warnIcon, "Copy"},};
        DefaultTableModel model = new DefaultTableModel(data, columnNames) {

            private static final long serialVersionUID = 1L;
            //  Returning the Class of each column will allow different
            //  renderers to be used based on Class

            @Override
            public Class getColumnClass(int column) {
                return getValueAt(0, column).getClass();
            }
        };
        table = new JTable(model);
        table.setRowHeight(pHeight);
        table.setPreferredScrollableViewportSize(table.getPreferredSize());
        final TableRowSorter<TableModel> sorter = new TableRowSorter<TableModel>(model);
        table.setRowSorter(sorter);
        filterText.setMaximumSize(new Dimension(400, 30));
        filterText.setFont(new Font("Serif", Font.BOLD, 20));
        filterText.setForeground(Color.BLUE);
        filterText.getDocument().addDocumentListener(new DocumentListener() {

            private void searchFieldChangedUpdate(DocumentEvent evt) {
                String text = filterText.getText();
                if (text.length() == 0) {
                    sorter.setRowFilter(null);
                    table.clearSelection();
                } else {
                    try {
                        sorter.setRowFilter(RowFilter.regexFilter("(?i)" + text));
                    } catch (PatternSyntaxException pse) {
                        JOptionPane.showMessageDialog(null, "Bad regex pattern", "Bad regex pattern", JOptionPane.ERROR_MESSAGE);
                    }
                }
            }

            @Override
            public void insertUpdate(DocumentEvent evt) {
                searchFieldChangedUpdate(evt);
            }

            @Override
            public void removeUpdate(DocumentEvent evt) {
                searchFieldChangedUpdate(evt);
            }

            @Override
            public void changedUpdate(DocumentEvent evt) {
                searchFieldChangedUpdate(evt);
            }
        });
        add(filterText, BorderLayout.NORTH);
        JScrollPane scrollPane = new JScrollPane(table);
        add(scrollPane, BorderLayout.CENTER);
        myLabel.setPreferredSize(new Dimension(200, pHeight));
        myLabel.setHorizontalAlignment(SwingConstants.CENTER);
        add(myLabel, BorderLayout.SOUTH);
        new Thread(this).start();
    }

    public void run() {
        while (runProcess) {
            try {
                Thread.sleep(1250);
            } catch (Exception e) {
                e.printStackTrace();
            }
            SwingUtilities.invokeLater(new Runnable() {

                @Override
                public void run() {
                    ImageIcon myIcon = (ImageIcon) table.getModel().getValueAt(count, 0);
                    String lbl = "JTable Row at :  " + count;
                    myLabel.setIcon(myIcon);
                    myLabel.setText(lbl);
                    count++;
                    if (count > 2) {
                        count = 0;
                    }
                }
            });
        }
    }

    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {

            @Override
            public void run() {
                TableIcon frame = new TableIcon();
                frame.setDefaultCloseOperation(EXIT_ON_CLOSE);
                frame.setLocation(150, 150);
                frame.pack();
                frame.setVisible(true);
            }
        });
    }
}

JTable排序不显示图像

1 个答案: