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java - java Jtable JscrollPane 全屏显示的JTable

问题描述

我的 JTable 和滚动条有问题，我尝试了几件事，现在只有当框架处于全屏高度时才可以，请参见下面的屏幕截图：

在此处输入图像描述

全高

我试图实现这一目标：

 Dimension dim = new Dimension(400,350);
    tableProd.setSize(dim);
    tableProd.setPreferredSize(dim);
    tableProd.setMinimumSize(dim);
    tableProd.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
    tableProd.setModel(modeleDatas);
    tableProd.setPreferredScrollableViewportSize(dim);

    JScrollPane scrollTab=new JScrollPane(tableProd);    
    scrollTab.setPreferredSize(dim);

    panelProd.add(scrollTab, gbc);

甚至用这个 JSTable 扩展 JTable ：

public class JSTable extends JTable {

/**
 * Returns false to indicate that horizontal scrollbars are required
 * to display the table while honoring perferred column widths. Returns
 * true if the table can be displayed in viewport without horizontal
 * scrollbars.
 * 
 * @return true if an auto-resizing mode is enabled 
 *   and the viewport width is larger than the table's 
 *   preferred size, otherwise return false.
 * @see Scrollable#getScrollableTracksViewportWidth
 */
public boolean getScrollableTracksViewportWidth() {
if (autoResizeMode != AUTO_RESIZE_OFF) {
    if (getParent() instanceof JViewport) {
    return (((JViewport)getParent()).getWidth() > getPreferredSize().width);
    }
} 
return false;
}

}

用户界面代码：

 public class Fenetre extends JFrame {

私有 JPanel 面板 = new JPanel(new CardLayout()); 

    public Fenetre(){

    this.setTitle("Gestion Station Phone");
    this.setSize(900, 800);
    this.setLocationRelativeTo(null);
    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    initMenu();
    this.setJMenuBar(menuBar);

     GridBagConstraints gbcPage = new GridBagConstraints();
    cardBD.setLayout(new GridBagLayout());

    titrePage.setFont(new Font("Serif",Font.BOLD,22));
    gbcPage.gridx=0;
    gbcPage.gridy=0;
    gbcPage.gridwidth=3;

    cardBD.add(titrePage,gbcPage);


    GridBagConstraints gbc = new GridBagConstraints();

    panelActions.setLayout(new GridBagLayout());

    gbc.gridx = 0;
    gbc.gridy = 0;
    panelActions.add(buttonAdd,gbc);
    gbc.gridx = 0;
    gbc.gridy = 1;
    gbc.insets=new Insets(10,0,0,0);
    panelActions.add(buttonUpdate,gbc);
    gbc.gridx = 0;
    gbc.gridy = 2;
    gbc.insets=new Insets(10,0,0,0);
    panelActions.add(buttonDel,gbc);

    gbcPage.gridx=0;
    gbcPage.gridy=1;
    Border border = new LineBorder(Color.BLACK);
    Border margin = new EmptyBorder(10,10,10,10);
    panelActions.setBorder(new CompoundBorder(border,margin));
    panelActions.setBackground(Color.white);

    gbcPage.gridwidth=1;
    gbcPage.insets=new Insets(10,0,0,0);
    cardBD.add(panelActions,gbcPage);

    panelInfosRow.setLayout(new GridBagLayout());
    gbc.gridx = 0;
    gbc.gridy = 0;
    gbc.insets=new Insets(0,0,0,0);
    labelId.setText("ID");
    panelInfosRow.add(labelId,gbc);
    gbc.gridx = 0;
    gbc.gridy = 1;
    gbc.insets=new Insets(2,0,0,0);
    textId.setPreferredSize(new Dimension(80,20));
    panelInfosRow.add(textId,gbc);


    gbc.gridx = 0;
    gbc.gridy = 2;
    gbc.insets=new Insets(15,0,0,0);
    panelInfosRow.add(label1,gbc);
    gbc.gridx = 0;
    gbc.gridy = 3;
    gbc.insets=new Insets(2,0,0,0);
    text1.setPreferredSize(new Dimension(120,20));
    panelInfosRow.add(text1,gbc);

    gbc.gridx = 0;
    gbc.gridy = 3;
    gbc.insets=new Insets(2,0,0,0);
    combo.setVisible(false);
    panelInfosRow.add(combo,gbc);

    .....

    gbcPage.gridx=1;
    gbcPage.gridy=1;
    gbcPage.gridwidth=1;
    gbcPage.insets=new Insets(10,20,0,0);
    cardBD.add(panelInfosRow,gbcPage);

    panelProd.setLayout(new GridBagLayout());
    Dimension dim = new Dimension(400,350);
    tableProd.setSize(dim);
    tableProd.setPreferredSize(dim);
    tableProd.setMinimumSize(dim);
    tableProd.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
    tableProd.setModel(modeleDatas);
 tableProd.setPreferredScrollableViewportSize(dim);
    gbc.gridx = 0;
    gbc.gridy = 0;
    panelProd.add(labelProd, gbc);

    gbc.gridx = 0;
    gbc.gridy = 1;
    JScrollPane scrollTab=new JScrollPane(tableProd);    
    scrollTab.setPreferredSize(dim);

    panelProd.add(scrollTab, gbc);

    gbcPage.gridx=2;
    gbcPage.gridy=1;
    gbcPage.gridwidth=1;
    cardBD.add(panelProd,gbcPage);


    logo = new JLabel(new ImageIcon("images/logo_station_phone2.png"));

    cardHome.setLayout(new GridBagLayout());
    gbc.gridx = 0;
    gbc.gridy = 0;
    cardHome.add(logo,gbc);
    gbc.insets = new Insets(10,0,0,0);
    gbc.gridx = 0;
    gbc.gridy = 1;
    cardHome.add(new JLabel("Choix point de vente "),gbc);
    gbc.insets = new Insets(2,0,0,0);
    gbc.gridx = 0;
    gbc.gridy = 2;
     MagasinDAO magasinBDD = new MagasinDAO(daoFactory);
     Object[][] magasins = magasinBDD.trouverMagasins();


     choix_magasin.addItem(new ObjectIdValue(-1, ""));
     if(prefs.getLong("id_point",-1)==-1)
         choix_magasin.setSelectedIndex(0);

     for(int i= 0 ; i<magasins.length;i++){
         choix_magasin.addItem(new ObjectIdValue((long) magasins[i][0], (String) magasins[i][1]));
         if(prefs.getLong("id_point",-1)==(long) magasins[i][0])
             choix_magasin.setSelectedIndex(i+1);
     }



    choix_magasin.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
           prefs.putLong("id_point", ((ObjectIdValue)choix_magasin.getSelectedItem()).getId());
        }
    });
    cardHome.add(choix_magasin,gbc);

    cardVente.setLayout(new GridBagLayout());

    gbc.gridx = 0;
    gbc.gridy = 0;
    gbc.gridwidth=2;
    cardVente.add(labelVente, gbc);
    gbc.gridx = 0;
    gbc.gridy = 1;
    gbc.gridwidth=2;
    gbc.insets = new Insets(8,0,0,0);
    listModel = new DefaultTableModel();
    liste_prod_vente.setModel(listModel);
    cardVente.add(liste_prod_vente, gbc);


    gbc.gridx = 0;
    gbc.gridy = 2;
    gbc.insets = new Insets(8,0,0,0);
    gbc.gridwidth=2;
    cardVente.add(label_vente_client,gbc);

    gbc.gridx = 0;
    gbc.gridy = 3;
    gbc.insets = new Insets(2,0,0,0);
    gbc.gridwidth=2;
    cardVente.add(liste_client,gbc);





    panels.add(cardHome,BorderLayout.CENTER);
    panels.add(cardBD,BorderLayout.CENTER);
    panels.add(cardVente, BorderLayout.CENTER);

    cardHome.setVisible(true);
    cardBD.setVisible(false);
    cardBD.setVisible(false);

所以，我不知道是什么问题如此奇怪。我正在等待解决方案谢谢。

标签： javaswinglayout-managergridbaglayout

解决方案

您需要正确配置包含 （又包含您的 ）的父容器的布局管理器。从线JScrollPaneJTable

panelProd.add(scrollTab, gbc);

在您的第一个代码片段中，我猜父容器是panelProd并且它的布局管理器是GridBagLayout. 因此，您需要正确配置与滚动窗格关联的GridBagConstraints实例（我猜是）。gbc你可能需要类似的东西

gbc.fill = GridBagConstraint.BOTH;
gbc.weightx = 1;
gbc.weighty = 1;
panelProd.add(scrollTab, gbc);

在这种情况下，不要为滚动窗格和表格设置首选尺寸！！

但是，如果不知道填充的其余代码，panelProd则无法确定。

编辑以反映原始问题中的其他源代码：

替换行中的代码

panelProd.setLayout(new GridBagLayout());

到线

cardBD.add(panelProd,gbcPage);

和

JPanel panelProd = new JPanel(new BorderLayout());
tableProd.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
tableProd.setModel(modeleDatas);
panelProd.add(labelProd, BorderLayout.NORTH);

JScrollPane scrollTab=new JScrollPane(tableProd);    
panelProd.add(scrollTab, BorderLayout.CENTER);

int oldFill = gbcPage.fill;
double oldWeightX = gbcPage.weightx;
double oldWeightY = gbcPage.weighty;

gbcPage.fill = GridBagConstraints.BOTH;
gbcPage.gridx=2;
gbcPage.gridy=1;
gbcPage.gridwidth=1;
gbcPage.weightx=1;
gbcPage.weighty=1;
cardBD.add(panelProd,gbcPage);

gbc.fill = oldFill;
gbc.weightx = oldWeightX;
gbc.weighty = oldWeightY;

GridBagLayout对于像您这样的简单安排来说不是必需的prodPanel（BorderLayout在这种情况下使用起来就足够了并且更简单）。

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