Question

Hello Friends我正在使用Swing和awt创建桌面应用程序。我正在使用JTabbedPane来创建Tab（活动，公园，过滤轨迹，MyPark）但它在左边对齐我希望它在中心对齐。我使用一些自定义的UL（外观和感觉），但我没有得到任何解决方案和想法这里是我的代码。

private void initTabbedPane() {
        UIManager.put("TabbedPane.selected", Color.BLUE);
        tabbedPane = new JTabbedPane(){
            public Color getForegroundAt(int index){
                if(getSelectedIndex() == index) return Color.white;
                return Color.BLACK;
              }
            };
        tabbedPane.setUI(new CustomTabUI());
        tabbedPane.setBackground(Color.WHITE);
        tabbedPane.setTabPlacement(JTabbedPane.TOP);
        tabbedPane.addTab(getOutdoors.getActivities().getName(),
                new ActivityTab(getOutdoors.getActivities()));
        tabbedPane.addTab(getOutdoors.getParks().getName(), new ParkTab(getOutdoors.getParks()));
        tabbedPane.addTab("Filter Trails", new FilterTab(getOutdoors.getActivities(),
                getOutdoors.getTrailLists(), getOutdoors.getNumTrailLists()));


        for (int i = 0; i < getOutdoors.getNumTrailLists(); i++) {
            TrailList t = getOutdoors.getTrailList(i);
            if(t != null)
                tabbedPane.addTab(t.getParkName(), new TrailListTab(t, getOutdoors.getActivities()));
        }


        tabbedPane.setSelectedIndex(0);
        if (openFile) {
            getContentPane().removeAll();
            openFile = false;
        }
        tabbedPane.setTabPlacement(JTabbedPane.TOP);
        tabbedPane.setTabLayoutPolicy(JTabbedPane.WRAP_TAB_LAYOUT);

        getContentPane().add(tabbedPane, BorderLayout.CENTER);
        getContentPane().validate();
    }

自定义UI类： -

public class CustomTabUI extends BasicTabbedPaneUI {

    private final Insets borderInsets = new Insets(0, 0, 10, 0);
    @Override
    protected void paintContentBorder(Graphics g, int tabPlacement, int selectedIndex) {

    }
    @Override
    protected Insets getContentBorderInsets(int tabPlacement) {
        return borderInsets;
    }

}

Answer 1

好的我知道我要提出的是某种欺骗行为。不是一个合适的解决方案，但你可以使用它

所以我的代码如下

public class NewJFrame extends javax.swing.JFrame {

/**
 * Creates new form NewJFrame
 */
public NewJFrame() {
    initComponents();
    jTabbedPane1.addTab("                                                            ", null);
    jTabbedPane1.setBackgroundAt(0, new Color(0,102,102));



    jTabbedPane1.setEnabledAt(0, false);
    JPanel jPanel;
    jPanel = new JPanel();
    jPanel.setBackground(Color.yellow);
    jTabbedPane1.addTab("My tab 1", jPanel);
    jTabbedPane1.setSelectedIndex(1);
    jPanel = new JPanel();
    jPanel.setBackground(Color.PINK);
    jTabbedPane1.addTab("My tab 1", jPanel);
    jTabbedPane1.addTab("                                                            ", null);
    jTabbedPane1.setEnabledAt(3, false);
    jTabbedPane1.setBackgroundAt(3, new Color(0,102,102));


}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">                          
private void initComponents() {

    jPanel1 = new javax.swing.JPanel();
    jTabbedPane1 = new javax.swing.JTabbedPane();

    setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);

    jPanel1.setBackground(new java.awt.Color(0, 102, 102));

    javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
    jPanel1.setLayout(jPanel1Layout);
    jPanel1Layout.setHorizontalGroup(
        jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(jPanel1Layout.createSequentialGroup()
            .addContainerGap()
            .addComponent(jTabbedPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 920, Short.MAX_VALUE)
            .addContainerGap())
    );
    jPanel1Layout.setVerticalGroup(
        jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addGroup(jPanel1Layout.createSequentialGroup()
            .addContainerGap()
            .addComponent(jTabbedPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 478, Short.MAX_VALUE)
            .addContainerGap())
    );

    javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
    getContentPane().setLayout(layout);
    layout.setHorizontalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
    );
    layout.setVerticalGroup(
        layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
        .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
    );

    pack();
}// </editor-fold>                        

boolean state = false ;
public static void main(String args[]) {

    java.awt.EventQueue.invokeLater(new Runnable() {
        public void run() {
            new NewJFrame().setVisible(true);
        }
    });
}

// Variables declaration - do not modify                     
private javax.swing.JPanel jPanel1;
private javax.swing.JTabbedPane jTabbedPane1;
// End of variables declaration

}

结果如下

你必须删除灵气的外观和感觉，你可以改善这一点，并删除禁用标签的边框为绿色，这样它就不会寻找用户眼睛

这只是一个骗子

如何在屏幕中心的JTabbedPane中制作选项卡

1 个答案: