JTable排序不显示图像 [英] JTable Sorting not Displaying Images

问题描述

所以我已经成功地在我的小程序中实现了搜索功能，但是当我单击按钮进行排序时，它可以正常工作，但是图像不显示.这是我为分拣器添加的代码，可以正常工作，但没有显示每一行的图像.当我取出此代码时，会显示图像，但排序不起作用.排序时是否可以显示图像?

So I have successfully implemented a search feature into my tiny program but when I click the button to sort, it works fine but the images don't display. This is the code that I added for the sorter which works fine but the images for each row don't show up. When I take out this code, the images show up but the sorting doesn't work. Is there away that I can make the images show when sorting?

    // 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.

推荐答案

• 必须将JTable的视图与其模型

  • have to synchronize JTables view with its model,

    已经看过方法convertXxxIndexToXxx

    将int modelRow = convertRowIndexToModel(row);添加到您的Renderer或prepareRenderer

    示例convertRowIndexToModel

    编辑

    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);
                }
            });
        }
    }
    

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