将Jbutton添加到Jtable的每一行 [英] Add Jbutton to each row of a Jtable
问题描述
我需要你的帮助，我想在Jtable的每一行添加一个Jbutton（删除按钮）。直到现在，我已将按钮添加到每一行，但我对该操作有疑问。我尝试过这个，但它不起作用。当我点击按钮时没有任何反应。任何人都可以帮助我，我真的是堆栈。
这是我的代码：
I need ur help, I want to add a Jbutton ( delete button) to each row of a Jtable. Till now, I added the button to each row, but I've a problem with the action. I tried this, but it's not working. When I click the button nothing happens. Can anyone help me please, i'm really stack. This is my code :
`public class Fenetre extends JFrame {
Statement stmt;
Map<Integer,Integer> row_table = new HashMap<Integer,Integer>();
JButton addUser;
public Fenetre(){
this.setLocationRelativeTo(null);
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
this.setTitle("JTable");
this.setSize(600, 140);
String requeteListeUser=" SELECT * FROM COMPTE_UTILISATEUR";
try{
stmt= (Statement) new Connexion().getConnection().createStatement();
ResultSet resultat= stmt.executeQuery(requeteListeUser);
resultat.last();
String title[] = {"Nom","Prenom","Matricule","Action"};
int rowCount = resultat.getRow();
Object[][] data = new Object[rowCount][4];
final JTable tableau = new JTable(data,title);
JButton jButton2= new JButton("Supprimer");
// this.tableau = new JTable(model);
tableau.getColumn("Action").setCellRenderer(new ButtonRenderer());
this.getContentPane().add(new JScrollPane(tableau), BorderLayout.CENTER);
int i=0;
resultat.beforeFirst(); // on repositionne le curseur avant la première ligne
while(resultat.next()) //tant qu'on a quelque chose à lire
{
//Remplire le tableau à deux dimensions Data[][]
for(int j=1;j<=4;j++)
{
if(j != 4)data[i][j-1]=resultat.getObject(j)+"";
else { data[i][j-1] = jButton2;
jButton2.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
((DefaultTableModel)tableau.getModel()).removeRow(tableau.getSelectedRow());
}
});
}
}
i++;
row_table.put(i, resultat.getInt("id_utilisateur"));
}
}
catch(SQLException ex){
System.out.println(ex);
}
addUser = new JButton("Ajouter un utilisateur");
addUser.setPreferredSize(new Dimension(60,30));
addUser.addActionListener(new ActionListener(){
@Override
public void actionPerformed(ActionEvent arg0) {
new AjouterUtilisateur().setVisible(true);
}
});
this.getContentPane().add(addUser,BorderLayout.SOUTH);
}
//Classe modèle personnalisée
class ZModel extends AbstractTableModel{
private Object[][] data;
private String[] title;
//Constructeur
public ZModel(Object[][] data, String[] title){
this.data = data;
this.title = title;
}
//Retourne le nombre de colonnes
public int getColumnCount() {
return this.title.length;
}
//Retourne le nombre de lignes
public int getRowCount() {
return this.data.length;
}
//Retourne la valeur à l'emplacement spécifié
public Object getValueAt(int row, int col) {
return this.data[row][col];
}
}
public class ButtonRenderer extends JButton implements TableCellRenderer{
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean isFocus, int row, int col) {
//On écrit dans le bouton ce que contient la cellule
setText("Suuprimer");
//On retourne notre bouton
return this;
}
}
public static void main(String[] args){
//Fenetre fen = new Fenetre();
new Menu().setVisible(true);
}
}`
推荐答案
在 JTable 的列中添加一个按钮来执行操作是......个人......限制性和一点点，好吧，80年代的网络......
Adding a button to a JTable's column to perform an action is...personally...restrictive and a little, well, 80's web...
考虑一种不同的问题解决方法，而不是在列中放置按钮，这会占用屏幕空间，如果配置正确可能会出现在屏幕外并将用户限制为单个，重复，处理多行时的操作（即，他们想一次删除多行），你可以使用 JToolBar 和/或 JMenu 提供对删除功能的访问，允许用户选择一行或多行并一键删除...
Consider a different approach to the problem, instead of placing buttons in the columns, which take up screen real estate, which, if configured correctly could appear off screen and limit the user to a single, repetitive, action when dealing with multiple rows (ie, they want to delete multiple rows in one go), you could use a JToolBar and/or JMenu to provide access to the delete function, which would allow the user to select one or more rows and delete them in a single click...
另外考虑一下，你提供的动作可以通过键盘上的 Delete 键来触发，以执行相同的动作，让用户不必从键盘上抬起手......
Consider also, you provide a action which can be triggered by the Delete key on the keyboard to perform the same action, freeing the user from having to lift their hands from the keyboard...
你可以前夕n还将 JPopupMenu 附加到表中...
You could even attach a JPopupMenu to the table as well...
这实际上是一个非常常见的用例，如果设计得当，非常可重复使用...
This is, actually, a very common use case, and if designed properly, very re-usable...
例如......
import java.awt.BorderLayout;
import java.awt.EventQueue;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import java.util.ArrayList;
import java.util.List;
import java.util.Vector;
import javax.swing.AbstractAction;
import javax.swing.ActionMap;
import javax.swing.InputMap;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.JToolBar;
import javax.swing.KeyStroke;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
import javax.swing.event.ListSelectionEvent;
import javax.swing.event.ListSelectionListener;
import javax.swing.table.DefaultTableModel;
import javax.swing.table.TableModel;
public class EditRows {
public static void main(String[] args) {
new EditRows();
}
public EditRows() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
DefaultTableModel model = new DefaultTableModel();
for (int index = 0; index < 13; index++) {
model.addColumn(Character.toString((char) (index + 65)));
}
for (int row = 0; row < 100; row++) {
Vector<String> rowData = new Vector<>(13);
for (int col = 0; col < 13; col++) {
rowData.add(row + "x" + col);
}
model.addRow(rowData);
}
JTable table = new JTable(model);
DeleteRowFromTableAction deleteAction = new DeleteRowFromTableAction(table, model);
JToolBar tb = new JToolBar();
tb.add(deleteAction);
InputMap im = table.getInputMap(JTable.WHEN_ANCESTOR_OF_FOCUSED_COMPONENT);
ActionMap am = table.getActionMap();
im.put(KeyStroke.getKeyStroke(KeyEvent.VK_DELETE, 0), "deleteRow");
am.put("deleteRow", deleteAction);
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(tb, BorderLayout.NORTH);
frame.add(new JScrollPane(table));
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public abstract class AbstractTableAction<T extends JTable, M extends TableModel> extends AbstractAction {
private T table;
private M model;
public AbstractTableAction(T table, M model) {
this.table = table;
this.model = model;
}
public T getTable() {
return table;
}
public M getModel() {
return model;
}
}
public class DeleteRowFromTableAction extends AbstractTableAction<JTable, DefaultTableModel> {
public DeleteRowFromTableAction(JTable table, DefaultTableModel model) {
super(table, model);
putValue(NAME, "Delete selected rows");
putValue(SHORT_DESCRIPTION, "Delete selected rows");
table.getSelectionModel().addListSelectionListener(new ListSelectionListener() {
@Override
public void valueChanged(ListSelectionEvent e) {
setEnabled(getTable().getSelectedRowCount() > 0);
}
});
setEnabled(getTable().getSelectedRowCount() > 0);
}
@Override
public void actionPerformed(ActionEvent e) {
System.out.println("...");
JTable table = getTable();
if (table.getSelectedRowCount() > 0) {
List<Vector> selectedRows = new ArrayList<>(25);
DefaultTableModel model = getModel();
Vector rowData = model.getDataVector();
for (int row : table.getSelectedRows()) {
int modelRow = table.convertRowIndexToModel(row);
Vector rowValue = (Vector) rowData.get(modelRow);
selectedRows.add(rowValue);
}
for (Vector rowValue : selectedRows) {
int rowIndex = rowData.indexOf(rowValue);
model.removeRow(rowIndex);
}
}
}
}
}
看看：
- How to Use Actions
- How to Use Key Bindings
- How to Use Tool Bars
- How to Use Menus
详细信息。
如果您仍然决定在表格列中放置一个按钮，那么看看表格栏栏
If you're still determined to place a button in the table column, then take a look at Table Button Column
这篇关于将Jbutton添加到Jtable的每一行的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
