java - 向 JTable 添加彩色行

Question

我有一个要填写的表单和 3 个 chekbox(黄橙红)，当我填写表单并选择一种颜色时，我单击一个按钮，该按钮会将所选颜色的行添加到 Jtable 中。我使用了 TableCellRenderer 它可以工作，但是当我执行该操作三到四次时，我将所有行都用选定的复选框着色。如何为每一行设置他的颜色？这是我的代码:

JTable  table = new JTable(
            new DefaultTableModel(new Object[][] {}, columnNames));

    TableColumn column1 = table.getColumnModel().getColumn(
            0);
    column1.setCellRenderer(getRenderer());
    TableColumn column3 = table.getColumnModel().getColumn(
            1);
    column3.setCellRenderer(getRenderer());
    TableColumn column2 = table.getColumnModel().getColumn(
            2);
    column2.setCellRenderer(getRenderer());
 String desc = display.getSelectedItem().toString();
 DefaultTableModel tm = (DefaultTableModel) table.getModel();

                    String numcam = num_cam;
                    String timeStamp = new SimpleDateFormat(
                            "yyyy-MM-dd--HH:mm:ss").format(Calendar
                            .getInstance().getTime());

                    tm.addRow(new Object[] { new String(timeStamp), new String(numcam),
                            new String(desc) });

                    table.setModel(tm);

                    // reinitialiser les boutons apres le click
                    buttonGroup.clearSelection();
                    buttonGroup2.clearSelection();

这是我的单元格渲染器代码

  private static TableCellRenderer getRenderer() {
    return new DefaultTableCellRenderer() {
        /**
         * 
         */
        private static final long serialVersionUID = 1L;

        @Override
        public Component getTableCellRendererComponent(JTable table,
                Object value, boolean isSelected, boolean hasFocus,
                int row, int column) {
            Component tableCellRendererComponent = super
                    .getTableCellRendererComponent(table, value,
                            isSelected, hasFocus, row, column);
            tableCellRendererComponent.setBackground(Color.black);
            setBorder(BorderFactory.createEmptyBorder(15, 15, 15, 15));
            // verification de l couleur du bouton clické
            if (yellow.isSelected()) {
                tableCellRendererComponent.setForeground(new Color(255,
                        255, 51));
            } else if (orange.isSelected()) {
                tableCellRendererComponent.setForeground(new Color(255,
                        153, 0));
            } else if (red.isSelected()) {
                tableCellRendererComponent.setForeground(Color.RED);
            }

            return tableCellRendererComponent;
        }
    };
}

Answer 1

How to make for every row his colour?

我不清楚这个问题:

1. 您是否想让每一行都具有相同的颜色？如果是，那么每当您选择新颜色时都需要调用 table.repaint() 。所有行都将使用新颜色重新渲染

2. 或者，您是否尝试根据添加行时选择的颜色为每一行设置不同的颜色？如果是，那么您需要向 TableModel 添加另一列来存储该行选定的颜色。然后在渲染器中，您需要从 TableModel 获取颜色。