我对此完全陌生。。。。。
事实上,我有一个JPanel,有两个面板(比如上面板和下面板)上部面板为JPanel下面的面板是JTabbedPane。。
在JtabbedPane中,我有两个选项卡。每个选项卡都包含一个JPanel(具有空布局),它有一个或多个组件,如jtextfield、jbutton、jscrollpane(带jtable)等…………
问题是,当我切换到任何选项卡时,我都无法获得正常的jpanel效果。按钮不能用鼠标点击(可以通过按下tab键来点击以选择按钮n,然后按下空格键),文本字段不能在鼠标点击时选择(只能通过按下tab按键来选择)等。
那么有什么解决办法吗??我希望jtabbedpane中的面板像普通的jpanel一样工作:)谢谢:)
如果没有任何MCVE,很难提供帮助,所以我制作了一个简单的示例应用程序,我希望它适合您的应用程序。
import java.awt.BorderLayout;
import java.awt.Dimension;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class MainFrame extends JFrame {
/**
*
*/
private static final long serialVersionUID = 1L;
private static MainFrame frame;
private MainFrame() {
this.setTitle("Focus on JTabbedPane");
this.setSize(new Dimension(800, 600));
this.getContentPane().add(initComponents());
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
private JPanel initComponents() {
JPanel panel = new JPanel(new BorderLayout(10, 10));
panel.add(new MyInfoPanel(), BorderLayout.NORTH);
panel.add(new MyTabPanel(), BorderLayout.CENTER);
return panel;
}
public static void createAndShowGui() {
frame = new MainFrame();
frame.setVisible(true);
}
}
第一个只有Infotext 的JPanel
import javax.swing.JLabel;
import javax.swing.JPanel;
public class MyInfoPanel extends JPanel {
/**
*
*/
private static final long serialVersionUID = 1L;
public MyInfoPanel() {
this.add(new JLabel("Some info text"));
}
}
MyTabbedPanel
import javax.swing.JTabbedPane;
public class MyTabPanel extends JTabbedPane {
/**
*
*/
private static final long serialVersionUID = 1L;
public MyTabPanel() {
this.addTab("Tab 1", new FirstTabPanel());
this.addTab("Tab 2", new SecondTabPanel());
}
}
两个选项卡
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JPanel;
import javax.swing.JTextField;
public class FirstTabPanel extends JPanel implements ActionListener {
/**
*
*/
private static final long serialVersionUID = 1L;
JButton button;
JTextField tf;
public FirstTabPanel() {
tf = new JTextField("Textfield");
this.add(tf);
button = new JButton("Button");
button.addActionListener(this);
this.add(button);
}
@Override
public void actionPerformed(ActionEvent e) {
if(e.getSource().equals(button)) {
tf.setText("Button on was clicked!");
}
}
}
SecondTabPanel
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.event.KeyEvent;
import java.awt.event.KeyListener;
import javax.swing.JPanel;
import javax.swing.JTextArea;
import javax.swing.JTextField;
public class SecondTabPanel extends JPanel {
/**
*
*/
private static final long serialVersionUID = 1L;
JTextArea area;
JTextField field;
public SecondTabPanel() {
this.setLayout(new BorderLayout(10, 10));
field = new JTextField();
this.add(field, BorderLayout.NORTH);
area = new JTextArea();
this.add(area, BorderLayout.CENTER);
field.addKeyListener(new KeyListener() {
@Override
public void keyTyped(KeyEvent e) {
}
@Override
public void keyReleased(KeyEvent e) {
// TODO Auto-generated method stub
}
@Override
public void keyPressed(KeyEvent e) {
area.setText(area.getText() + e.getKeyChar());
}
});
}
}
并启动
import javax.swing.SwingUtilities;
public class App {
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
MainFrame.createAndShowGui();
}
});
}
}
希望这个迷你应用程序能帮助你。