想要其中一个为combobox,其他为textfield
1,我发现用jtable 的 prepareEditor(), 没有效果, ???2,于是用方法二继承DefaultCellEditor,覆写getTableCellEditorComponent(), 结果取不到值???附上部分代码:
public class TestTableCellEditor extends DefaultCellEditor {
JComboBox comboBox = new JComboBox(new String[] {"a", "b"}); public TestTableCellEditor () {
super(new JTextField());
} public Component getTableCellEditorComponent(JTable table,
Object value,
boolean isSelected,
int row,
int column) {
if (row == 0 && column == 0) {
comboBox.setSelectedItem(value);
return comboBox;
} else {
return super.getComponent();
}
}
}
1,我发现用jtable 的 prepareEditor(), 没有效果, ???2,于是用方法二继承DefaultCellEditor,覆写getTableCellEditorComponent(), 结果取不到值???附上部分代码:
public class TestTableCellEditor extends DefaultCellEditor {
JComboBox comboBox = new JComboBox(new String[] {"a", "b"}); public TestTableCellEditor () {
super(new JTextField());
} public Component getTableCellEditorComponent(JTable table,
Object value,
boolean isSelected,
int row,
int column) {
if (row == 0 && column == 0) {
comboBox.setSelectedItem(value);
return comboBox;
} else {
return super.getComponent();
}
}
}
我一列中有一个combobox, 其他为textfield
那样的话
它会把 JComboBox 自动转化成字符串显示 很长的一串~~~~
方法一,仿照DefaultCellEditor写个editor
方法二,简单点,要的话留邮箱吧,懒得贴代码了
谢谢!!!
TableCellEditor
因我写的代码太长,而且还关系到其他的一些东西,就不在这里贴了,嘿嘿
给我发一下吧,急用,谢谢了
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.table.*;
import javax.swing.event.*;public class EachRowEditor implements TableCellEditor {
protected Hashtable editors; //哈希表
protected TableCellEditor editor, defaultEditor; //编辑器
JTable table; //这个变量似乎没用到 public EachRowEditor(JTable table) {
this.table = table;
editors = new Hashtable();
defaultEditor = new DefaultCellEditor(new JTextField()); //用JTextField构造编辑器
} public void setEditorAt(int row, TableCellEditor editor) { //关键
editors.put(new Integer(row),editor); //指定编辑器加入哈希表
} public Component getTableCellEditorComponent(JTable table,
Object value, boolean isSelected, int row, int column) { return editor.getTableCellEditorComponent(table,
value, isSelected, row, column);
} public Object getCellEditorValue() {
return editor.getCellEditorValue();
}
public boolean stopCellEditing() {
return editor.stopCellEditing();
}
public void cancelCellEditing() {
editor.cancelCellEditing();
}
public boolean isCellEditable(EventObject anEvent) {
selectEditor((MouseEvent)anEvent);
return editor.isCellEditable(anEvent);
}
public void addCellEditorListener(CellEditorListener l) {
editor.addCellEditorListener(l);
}
public void removeCellEditorListener(CellEditorListener l) {
editor.removeCellEditorListener(l);
}
public boolean shouldSelectCell(EventObject anEvent) {
selectEditor((MouseEvent)anEvent);
return editor.shouldSelectCell(anEvent);
} protected void selectEditor(MouseEvent e) { //这个没看明白
int row;
if (e == null) {
row = table.getSelectionModel().getAnchorSelectionIndex();
} else {
row = table.rowAtPoint(e.getPoint());
}
editor = (TableCellEditor)editors.get(new Integer(row));
if (editor == null) {
editor = defaultEditor;
}
}
}
设置用以下方法:
EachRowEditor rowEditor = new EachRowEditor(JTable); //JTable那个参数似乎没用,null应该也可以
rowEditor.setEditorAt(行号, new DefaultCellEditor(jComboBox1)); //用jComboBox1构造编辑器,并指定行
jTable1.getColumnModel().getColumn(列号).setCellEditor(rowEditor); //设置编辑器
上面的"行号","列号"为int型,两个int便指定了你想要的单元格