java - JTable 中的单选按钮无法正常工作

Question

我对以下代码有疑问。我的任务是，我必须在第一列中有单选按钮，当用户选择该单选按钮时，该行将被选中并发送以供处理。但我的问题是，我可以选择第一列中的单选按钮，但之后当用户单击表格的任何部分时，我单击的单选按钮将被取消选中。我不是能够弄清楚，为什么会发生。我真的被这个问题困住了。需要帮助。以下代码显示了我的问题。

import java.awt.Component;
import java.awt.event.ItemEvent;
import java.awt.event.ItemListener;
import java.util.ArrayList;
import java.util.List;

import javax.swing.ButtonGroup;
import javax.swing.DefaultCellEditor;
import javax.swing.JCheckBox;
import javax.swing.JDialog;
import javax.swing.JPanel;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableCellRenderer;

public class DisplayTable extends JDialog {
public void initialize() {
    SourceTableModel stm = new SourceTableModel();
    JTable sourceTable = new JTable(stm);

    sourceTable.getColumnModel().getColumn(0).setCellRenderer(new RadioButtonRenderer());
    sourceTable.getColumnModel().getColumn(0).setCellEditor(new RadioButtonEditor(new JCheckBox ()));

    JPanel panel = new JPanel();
    panel.add(new JScrollPane(sourceTable));
    add(panel);

    setModal(true);
    pack();
    setVisible(true);
}

public static void main(String[] args) {
    SwingUtilities.invokeLater(new Runnable() {
        public void run() {
            new DisplayTable().initialize();
        }
    });
}
}


class SourceTableModel extends AbstractTableModel{

private static final long serialVersionUID = 1L;

private List<SourceModel> sourceList = new ArrayList<SourceModel>(); 
private String[] columnNamesList = {"Select", "Group", "Work"};

public SourceTableModel() {
    this.sourceList = getSourceDOList();
}

public String getColumnName(int column) {
    return columnNamesList[column];
}

public int getRowCount() {
    return sourceList.size();
}

public int getColumnCount() {
    return columnNamesList.length;
}

public Class<?> getColumnClass(int columnIndex) {
    return (columnIndex == 0 ? Boolean.class : String.class);
}

public boolean isCellEditable(int rowIndex, int columnIndex) {
    return (columnIndex == 0 ? true : false);
}

public void setValueAt(Object aValue, int rowIndex, int columnIndex) {
    SourceModel model = (SourceModel) sourceList.get(rowIndex);
    switch (columnIndex) {
    case 0: 
        model.setSelect((Boolean)aValue);
        break;
    case 1: 
        model.setFactory((String) aValue);
        break;
    case 2: 
        model.setSupplier((String) aValue);
        break;
    }
    fireTableCellUpdated(rowIndex, columnIndex);
}


public Object getValueAt(int rowIndex, int columnIndex) {
    SourceModel source = sourceList.get(rowIndex);
    switch(columnIndex){
    case 0:
        return source.isSelect();
    case 1:
        return source.getFactory();
    case 2:
        return source.getSupplier();
    default:
        return null;
    }
}

private List<SourceModel> getSourceDOList() {
    List<SourceModel> tempSourceList=new ArrayList<SourceModel>();
    for (int index = 0; index < 5; index++) {

        SourceModel source = new SourceModel();
        source.setSelect(false);
        source.setFactory("group");
        source.setSupplier("Work");

        tempSourceList.add(source);
    }
    return tempSourceList;
}
}


class SourceModel {

private boolean select;
private String factory;
private String supplier;

public SourceModel() {
    // No Code;
}

public SourceModel(boolean select, String factory, String supplier) {
    super();
    this.select = select;
    this.factory = factory;
    this.supplier = supplier;
}

public boolean isSelect() {
    return select;
}

public void setSelect(boolean select) {
    this.select = select;
}

public String getFactory() {
    return factory;
}

public void setFactory(String factory) {
    this.factory = factory;
}

public String getSupplier() {
    return supplier;
}

public void setSupplier(String supplier) {
    this.supplier = supplier;
}
}

class RadioButtonEditor extends DefaultCellEditor implements ItemListener {

public JRadioButton btn = new JRadioButton();

public RadioButtonEditor(JCheckBox checkBox) {
    super(checkBox);
}

public Component getTableCellEditorComponent(JTable table, Object 
value, boolean isSelected, int row, int column) {

if (value==null) 
          return null;
btn.addItemListener(this);
if (( (Boolean) value).booleanValue())
    btn.setSelected(true);
else
    btn.setSelected(false);

    return btn;
}

public Object getCellEditorValue() {
    if(btn.isSelected() == true)
        return new Boolean(true);
    else 
        return new Boolean(false);
}

public void itemStateChanged(ItemEvent e) {
    super.fireEditingStopped();
}
}

class RadioButtonRenderer implements TableCellRenderer {
  public JRadioButton btn = new JRadioButton();
  public Component getTableCellRendererComponent(JTable table, Object value,
      boolean isSelected, boolean hasFocus, int row, int column) {
      if (value==null) return null;

      if(((Boolean)value).booleanValue())
      btn.setSelected(true);
      else
      btn.setSelected(false);

      if (isSelected) {
      btn.setForeground(table.getSelectionForeground());
      btn.setBackground(table.getSelectionBackground());
      } else {
      btn.setForeground(table.getForeground());
      btn.setBackground(table.getBackground());
      } 
      return btn;

  }
}

编辑: 我已经更新了我的代码，并且在第一列中使用了 Boolean 类。 我面临的问题是，如果我删除 super.fireEditingStopped();从 RadioButtonEditor 类然后我可以检查然后如果我单击表格的任何部分然后检查一个我未选中。如果我保留 super.fireEditingStopped();那么我什至无法检查单选按钮。

我知道 super.fireEditingStopped();将停止编辑。但我的问题是如何检查它？

P.S:抱歉，我已经发布了我的全部代码。我认为对于某些人来说，看问题会很容易。

这是程序的屏幕截图。

Answer 1

从您的插图来看，您似乎想要在 JTable 的行之间强制执行互斥，其中每一行都有一个 JRadioButton。由于 ButtonGroup 不合适，这 example由于@Guillaume Polet 使用自定义管理器。