JInternalFrame中的JButton不会触发ActionListener

Question

我想检查InternalFrame下的ActionListener是否正常。 但是实现ActionListener的内部类不会读取注册的按钮。 有什么原因吗？

EmployeeFrameView

public class EmployeeFrameView extends JInternalFrame
{
   JButton button;

   public EmployeeFrameView()
   {
    super("AddEmployee",true,true,true,true);
    addComponentsToPane(getContentPane());
    pack();
    setVisible(true);
    setLocation(xOffset,yOffset);
   }

   private void addComponentsToPane(final Container pane)
   {
    final JPanel content = new JPanel();
    panelEmployee = new JPanel();

    //Add to content and set layout
    content.setLayout(new BorderLayout());
    content.add(addComponentsToEmployeePanel(panelEmployee),BorderLayout.NORTH);

    //Adding ScrollPane to Container.
    final JScrollPane scrollPane = new JScrollPane(content, JScrollPane.VERTICAL_SCROLLBAR_ALWAYS, JScrollPane.HORIZONTAL_SCROLLBAR_ALWAYS);
    pane.add(scrollPane);
   }

   private JPanel addComponentsToEmployeePanel(JPanel panelEmployee)
   {
     panelEmployee.setLayout(grid);
     gbc.gridx = 0;
     gbc.gridy = 1;
     button = new JButton("Button");
     panelEmployee.add(button, gbc);
   }

   public void addAction(ActionListener l )
   {
    button.addActionListener(l);
   }
}

EmployeeFrameController

public class EmployeeFrameController 
{
EmployeeFrameView theView;

public EmployeeFrameController(EmployeeFrameView theView)
{
    this.theView = theView;

    this.theView.addAction(new addAction());
}

class addAction implements ActionListener
{
    @Override
    public void actionPerformed(ActionEvent e) 
    {
        System.out.println("Working");
    }

}

}

主要

public class Main
{
public static void main(String[] args)
{
   EmployeeFrameView employeeFrameView = new EmployeeFrameView();

   EmployeeFrameController employeeFrameController = new EmployeeFrameController(employeeFrameView);
}
}

Answer 1

我看不到您发布的代码有任何问题。 可能您的问题在代码中未包含的位置（我敢打赌会弄乱引用，因为您未包含将按钮添加到屏幕中的代码）。