将jRadioButton添加到jTable中 [英] Adding jRadioButton into jTable
本文介绍了将jRadioButton添加到jTable中的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试将 jRadioButton 添加到 jTable 中。我使用了给定的代码
I am trying to add jRadioButton into jTable. I used the given code
private class CustomCellRenderer extends DefaultTableCellRenderer {
/* (non-Javadoc)
* @see javax.swing.table.DefaultTableCellRenderer#getTableCellRendererComponent(javax.swing.JTable, java.lang.Object, boolean, boolean, int, int)
*/
@Override
public Component getTableCellRendererComponent(JTable table, Object value,boolean isSelected, boolean hasFocus, int row, int column) {
return new javax.swing.JRadioButton();
}
}
但是当我运行这个时我就是以不同的颜色获取 jTable 列，当我点击单选按钮时没有任何反应。我正在使用netbeans。如果我尝试自定义 jTable ，则 jTable 中不会出现任何内容。给我一个正确的指导。
But when I run this I am getting jTable column in a different color and when I click on radio Button nothing happens. I am using netbeans. If I try to Customize the jTable then nothing will appear in jTable. Give me a proper guidance.
推荐答案
- 如果你想编辑表格单元格的值，你必须设置
TableCellEditor。 - 你应该创建一个
JRadioButton你的渲染器并在任何地方重复使用，这就是TableCellRenderer的目的。 - 如果你没有调用
super.getTableCellRendererComponent，它不是需要扩展DefaultTableCellRenderer，只需实现TableCellRenderer。
- If you want to edit the value of a table cell, you must set a
TableCellEditor. - You should create a single
JRadioButtonin your renderer and reuse it everywhere, that is the purpose of TableCellRenderer. - If you are not calling
super.getTableCellRendererComponent, it is not need to extendDefaultTableCellRenderer, simply implementTableCellRenderer.
考虑阅读 JTable教程更好地理解渲染器和编辑器的概念。
Consider reading the JTable tutorial to understand better the concepts of renderers and editors.
编辑：
这是一个如何做的例子做这个工作。当然，你必须适应你的模型，但你应该得到要点：
Here is an example on how you can make this work. Of course, you'll have to adapt to your model but you should get the gist:
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.beans.PropertyChangeEvent;
import java.beans.PropertyChangeListener;
import java.beans.PropertyChangeSupport;
import java.util.ArrayList;
import java.util.List;
import javax.swing.AbstractCellEditor;
import javax.swing.JFrame;
import javax.swing.JRadioButton;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.SwingUtilities;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.table.AbstractTableModel;
import javax.swing.table.TableCellEditor;
import javax.swing.table.TableCellRenderer;
import javax.swing.table.TableColumn;
public class TestTable {
public class RadioButtonCellEditorRenderer extends AbstractCellEditor implements TableCellRenderer, TableCellEditor, ActionListener {
private JRadioButton radioButton;
public RadioButtonCellEditorRenderer() {
this.radioButton = new JRadioButton();
radioButton.addActionListener(this);
radioButton.setOpaque(false);
}
@Override
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column) {
radioButton.setSelected(Boolean.TRUE.equals(value));
return radioButton;
}
@Override
public Component getTableCellEditorComponent(JTable table, Object value, boolean isSelected, int row, int column) {
radioButton.setSelected(Boolean.TRUE.equals(value));
return radioButton;
}
@Override
public void actionPerformed(ActionEvent e) {
stopCellEditing();
}
@Override
public Object getCellEditorValue() {
return radioButton.isSelected();
}
}
private JFrame f;
private JTable table;
private class MyObjectManager {
private PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(this);
private List<MyObject> objects = new ArrayList<TestTable.MyObject>();
public void addObject(MyObject object) {
objects.add(object);
object.setManager(this);
propertyChangeSupport.firePropertyChange("objects", null, object);
}
public List<MyObject> getObjects() {
return objects;
}
public void setAsSelected(MyObject myObject) {
for (MyObject o : objects) {
o.setSelected(myObject == o);
}
}
}
private class MyObject {
private PropertyChangeSupport propertyChangeSupport = new PropertyChangeSupport(this);
private MyObjectManager manager;
private String value;
private boolean selected;
public MyObject(String value) {
this.value = value;
}
public PropertyChangeSupport getPropertyChangeSupport() {
return propertyChangeSupport;
}
public String getValue() {
return value;
}
public void setValue(String value) {
this.value = value;
propertyChangeSupport.firePropertyChange("value", null, value);
}
public MyObjectManager getManager() {
return manager;
}
public void setManager(MyObjectManager manager) {
this.manager = manager;
propertyChangeSupport.firePropertyChange("manager", null, manager);
}
public boolean isSelected() {
return selected;
}
public void setSelected(boolean selected) {
if (this.selected != selected) {
this.selected = selected;
if (selected) {
manager.setAsSelected(this);
}
propertyChangeSupport.firePropertyChange("selected", !selected, selected);
}
}
}
protected void initUI() {
MyObjectManager manager = new MyObjectManager();
for (int i = 0; i < 200; i++) {
MyObject object = new MyObject("Row " + (i + 1));
manager.addObject(object);
}
table = new JTable(new MyTableModel(manager));
table.setRowHeight(20);
TableColumn column = table.getColumnModel().getColumn(1);
column.setCellEditor(new RadioButtonCellEditorRenderer());
column.setCellRenderer(new RadioButtonCellEditorRenderer());
f = new JFrame();
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
f.add(new JScrollPane(table), BorderLayout.CENTER);
f.pack();
f.setVisible(true);
}
public class MyTableModel extends AbstractTableModel implements PropertyChangeListener {
private final MyObjectManager manager;
public MyTableModel(MyObjectManager manager) {
super();
this.manager = manager;
manager.propertyChangeSupport.addPropertyChangeListener(this);
for (MyObject object : manager.getObjects()) {
object.getPropertyChangeSupport().addPropertyChangeListener(this);
}
}
@Override
public void propertyChange(PropertyChangeEvent evt) {
if (evt.getSource() == manager) {
// OK, not the cleanest thing, just to get the gist of it.
if (evt.getPropertyName().equals("objects")) {
((MyObject) evt.getNewValue()).getPropertyChangeSupport().addPropertyChangeListener(this);
}
fireTableDataChanged();
} else if (evt.getSource() instanceof MyObject) {
int index = manager.getObjects().indexOf(evt.getSource());
fireTableRowsUpdated(index, index);
}
}
@Override
public int getColumnCount() {
return 2;
}
@Override
public int getRowCount() {
return manager.getObjects().size();
}
public MyObject getValueAt(int row) {
return manager.getObjects().get(row);
}
@Override
public Object getValueAt(int rowIndex, int columnIndex) {
switch (columnIndex) {
case 0:
return getValueAt(rowIndex).getValue();
case 1:
return getValueAt(rowIndex).isSelected();
}
return null;
}
@Override
public void setValueAt(Object value, int rowIndex, int columnIndex) {
if (columnIndex == 1) {
getValueAt(rowIndex).setSelected(Boolean.TRUE.equals(value));
}
}
@Override
public boolean isCellEditable(int rowIndex, int columnIndex) {
return columnIndex == 1;
}
@Override
public Class<?> getColumnClass(int column) {
switch (column) {
case 0:
return String.class;
case 1:
return Boolean.class;
}
return Object.class;
}
@Override
public String getColumnName(int column) {
switch (column) {
case 0:
return "Value";
case 1:
return "Selected";
}
return null;
}
}
public static void main(String[] args) throws ClassNotFoundException, InstantiationException, IllegalAccessException,
UnsupportedLookAndFeelException {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new TestTable().initUI();
}
});
}
}
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