对我的JTable单元使​​用JCheckBox作为DefaultCellEditor

Question

我正在使用此函数创建jTable，其中一些特殊的单元格有一个jComboBox作为编辑器：

void fillTable_(){
        final JComboBox myEditor = new JComboBox(new String[] {"yes", "no", "maybe"});
        String[][] data = new String[10][2];
            data[0][0] = "0,0";
            data[0][1] = "0,1";
            data[1][0] = "1,0";
            data[1][1] = "1,1";
            data[2][0] = "2,0";
            data[2][1] = "2,1";
            String[] columnNames = {"Nom", "Valeur"};
            DefaultTableModel model = new DefaultTableModel(data, columnNames);
            jTable1 = new JTable(model){
                DefaultCellEditor myCellEditor = new DefaultCellEditor(myEditor);
                @Override
                public TableCellEditor getCellEditor(int row, int column){
                    int modelColumn = convertColumnIndexToModel(column);
                    int modelRow = convertRowIndexToModel(row);
                    if(modelColumn == 1 && modelRow == 1){
                        return myCellEditor;
                    } else {
                        return super.getCellEditor(row, column);
                    }
                }
            };
    }

但是jTable保持空甚至不是纯文本显示。有什么不对吗？

Answer 1

  

但是JTable仍然是空的;甚至不显示纯文本。

您需要一个与您的编辑器对应的渲染器，正如此example中建议的那样，其中包含ValueRenderer 和 a ValueEditor。

  

我只需要在JComboBox

的某些单元格中添加JTable

如How to Use Tables: Concepts: Editors and Renderers中所述，“单个单元格渲染器通常用于绘制包含相同类型数据的所有单元格。”

  

我指定了行和列，但没有发生任何事情

当我将新JTable添加到容器时，您的代码似乎有用。

import java.awt.Dimension;
import java.awt.EventQueue;
import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellEditor;

/** @see http://stackoverflow.com/questions/7200500 */
public class TableTest extends JPanel {

    public TableTest() {
        this.setPreferredSize(new Dimension(320, 240));
        final JComboBox myEditor = new JComboBox(
            new String[]{"yes", "no", "maybe"});
        String[][] data = new String[10][4];
        data[0][0] = "0,0";
        data[0][5] = "0,1";
        data[1][0] = "1,0";
        data[1][6] = "1,1";
        data[2][0] = "2,0";
        data[2][7] = "2,1";
        String[] columnNames = {"Nom", "Valeur"};
        DefaultTableModel model = new DefaultTableModel(data, columnNames);
        JTable table = new JTable(model) {

            DefaultCellEditor myCellEditor = new DefaultCellEditor(myEditor);

            @Override
            public TableCellEditor getCellEditor(int row, int column) {
                int modelColumn = convertColumnIndexToModel(column);
                int modelRow = convertRowIndexToModel(row);
                if (modelColumn == 1 && modelRow == 1) {
                    return myCellEditor;
                } else {
                    return super.getCellEditor(row, column);
                }
            }
        };
        this.add(table);
    }

    private void display() {
        JFrame f = new JFrame("TableTest");
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        f.add(this);
        f.pack();
        f.setLocationRelativeTo(null);
        f.setVisible(true);
    }

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

            @Override
            public void run() {
                new TableTest().display();
            }
        });
    }
}

Answer 2

1）创建JTable，TableModel，JComboBox，然后将其与官方教程中的example放在一起

2）对于布尔组件，不需要创建自己的TableCellEditor，默认情况下为JTable 在TableCell中支持String，Integer，Double，Boolean，Date和Icon/ImageIcont

此论坛here，here和here

中的a.m .... here，here的另一个示例