我正在尝试使用jtable来包含其中一个列的组合框,但它不起作用,它只是作为普通的表格单元格显示。目前我正在关注oracle的例子:http://docs.oracle.com/javase/tutorial/displayCode.html?code=http://docs.oracle.com/javase/tutorial/uiswing/examples/components/TableRenderDemoProject/src/components/TableRenderDemo.java
我尝试了这里发布的关于这个和各种方法的所有主题,我让它工作一次,但在我尝试了不同的方法后丢失了它。 我究竟做错了什么? 我没有包括所有代码,它太长了,只是相关部分。 之前已将clientsTable声明为jTable。
// Define Table model for clients table
class ClientsTableModel extends DefaultTableModel {
public ClientsTableModel(Vector<Vector<String>> clientsDataVector,
Vector<String> clientColumNamesVector) {
super(clientsDataVector, clientColumNamesVector);
}
@Override
public int getColumnCount() {
return clientColumNames.length;
}
@Override
public int getRowCount() {
return clientsDataVector.size();
}
@Override
public String getValueAt(int row, int column) {
return clientsDataVector.get(row).get(column);
}
@Override
public void setValueAt(Object aValue, int row, int column) {
clientsDataVector.get(row).set(column, (String) aValue);
}
@Override
public Class<?> getColumnClass(int c) {
return getValueAt(0, c).getClass();
}
}
// create table model and add to clients table
clientColumNames = new String[] { "ID", "Name", "Type", "Address",
"Email", "Phone", "Comment" };
clientColumNamesVector = new Vector<String>(
Arrays.asList(clientColumNames));
clientsDataVector = new Vector<Vector<String>>(1, 1);
clientsTableModel = new ClientsTableModel(clientsDataVector,
clientColumNamesVector);
clientsTableModelEvent = new TableModelEvent(clientsTableModel);
clientsTableModel.addTableModelListener(new TableModelListener() {
@Override
public void tableChanged(TableModelEvent arg0) {
}
});
// create clients table and set type column to be combo box
String[] clientTypes = { "REGULAR", "GOLD", "PLATINUM" };
clientsTable = new JTable(clientsTableModel);
clientsTable.setAutoCreateRowSorter(true);
clientsTable.setFillsViewportHeight(true);
JComboBox clientsTypeComboBox = new JComboBox(clientTypes);
TableColumn clientsTypeColumn = clientsTable.getColumnModel().getColumn(2);
clientsTypeColumn.setCellEditor(new DefaultCellEditor(clientsTypeComboBox));
DefaultTableCellRenderer cellRenderer = new DefaultTableCellRenderer();
// create client scroll pane
JScrollPane clientsScrollPane = new JScrollPane(clientsTable);
GridBagConstraints gbc_clientsScrollPane = new GridBagConstraints();
gbc_clientsScrollPane.insets = new Insets(0, 0, 5, 0);
gbc_clientsScrollPane.fill = GridBagConstraints.BOTH;
gbc_clientsScrollPane.gridx = 0;
gbc_clientsScrollPane.gridy = 0;
viewClientsPanel.add(clientsScrollPane, gbc_clientsScrollPane);
答案 0 :(得分:0)
它只是作为普通的表格单元格出现。
它会发生,因为您的列具有默认渲染器。当您开始编辑时,列显示为JComboBox
,因为您将DefaultCellEditor
设置为JComboBox
。如果您希望始终将单元格渲染为JComboBox
,则可以为单元格的自定义视图实现TableCellRenderer
,为此读取tutorial。这是一个简单的例子:
import java.awt.Component;
import javax.swing.DefaultCellEditor;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableCellRenderer;
public class Example extends JFrame {
public Example() {
DefaultTableModel m = new DefaultTableModel(new Object[][]{{"2",2,3},{"1",4,5}},new Object[]{1,2,3});
JTable t = new JTable(m);
t.getColumnModel().getColumn(0).setCellEditor(new DefaultCellEditor(new JComboBox(new Object[]{"1","2"})));
t.getColumnModel().getColumn(0).setCellRenderer(getCellRenderer());
t.setRowHeight(25);
getContentPane().add(new JScrollPane(t));
pack();
}
private TableCellRenderer getCellRenderer() {
return new TableCellRenderer() {
JComboBox box = new JComboBox(new Object[]{"1","2"});
@Override
public Component getTableCellRendererComponent(JTable arg0, Object arg1,boolean arg2, boolean arg3, int arg4, int arg5) {
box.setSelectedItem(arg1);
return box;
}
};
}
public static void main(String[] args) throws InterruptedException {
Example ex = new Example();
ex.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
ex.setVisible(true);
}
}
看起来像下一个:
答案 1 :(得分:0)
@Override
public TableCellEditor getCellEditor(int row, int col) {
if (col==2) return clientsTypeCellEditor;
return super.getCellEditor(row, col);
}
@Override
public TableCellRenderer getCellRenderer(int arg0, int arg1) {
// TODO Auto-generated method stub
return super.getCellRenderer(arg0, arg1);
}
};