Question

我创建了一个带有JButton（图像）和普通图像的程序，现在如果单击图像将显示的普通按钮，现在我有程序，如果单击普通按钮，JButton（图像）将隐藏但我不工作，我得到一个错误代码

package View;

import java.awt.Color;
import java.awt.Container;
import java.awt.Cursor;
import java.awt.Dimension;
import java.awt.Font;
import java.awt.Image;
import java.awt.event.ActionListener;

import javax.swing.BorderFactory;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JPanel;


import Controller.HideController;
import Controller.HomeController;
import Controller.SelectieController;

public class Selectie extends JFrame{

private static String Vermeer = "Vermeer";

private JLabel label, label1, label2;
    private JButton keeper, kruis;
    private JPanel panel;
    private Container window = getContentPane();

 public Selectie()
    {
        initGUI();

    }

    public void initGUI()
    {
        setLayout(null);
        setTitle("Jari");
        setSize(800,600);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);


        label = new JLabel();       
        label.setBounds(0, 0, 266, 800);
        label.setBackground(Color.RED);
        label.setOpaque(true);
        window.add(label);

        label1 = new JLabel();
        label1.setBounds(266, 0, 266, 800);
        label1.setBackground(Color.BLACK);
        label1.setOpaque(true);
        window.add(label1);

        label2 = new JLabel();
        label2.setBounds(532, 0, 266, 800);
        label2.setBackground(Color.RED);
        label2.setOpaque(true);
        window.add(label2);

        JLabel foto = new JLabel();
        label1.add(foto);

        kruis = new JButton(new ImageIcon("../Ajax/src/img/logotje.gif"));
        kruis.setBorderPainted(false);
        kruis.setBounds(40, 150, 188, 188);
        label1.add(kruis);

        keeper = new JButton("1. "+""+" Kenneth Vermeer");
        Cursor cur = keeper.getCursor();
        keeper.setCursor(Cursor.getPredefinedCursor(Cursor.HAND_CURSOR));
        keeper.setBounds(20, 50, 186, 12);
        keeper.setFocusable(false);
        keeper.setBorderPainted(false);
        keeper.setContentAreaFilled(false);
        keeper.setFont(new Font("Arial",Font.PLAIN,17));
        keeper.setForeground(Color.WHITE);
        keeper.setActionCommand(Vermeer);
        label.add(keeper);

SelectieController s1 = new SelectieController(keeper);

        keeper.addActionListener(s1);

}

    HideController h1 = new HideController(keeper, kruis);
        {
        keeper.addActionListener(h1);
        }

}

动作监听器类：

package Controller;

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.SwingUtilities;

public class HideController implements ActionListener {

    private JButton keeper, logo;
    private static String Vermeer = "Vermeer";

    public HideController(JButton vermeer, JButton kruis)
    {
        keeper = vermeer;
        logo = kruis;
  //Kenneth Vermeer
     try
    {
        keeper.setVisible(true);

    }
    catch(Exception e)
    {
        e.printStackTrace();
    }
     logo.setVisible(false);
    }

    public void actionPerformed(ActionEvent event)
    {
        String actionCommand = event.getActionCommand();
        // Kenneth Vermeer
        if (Vermeer.equals(actionCommand)) 
        {
            SwingUtilities.invokeLater(new Runnable()
            {
                public void run()
                {                       
                    logo.setVisible(false);
                }
            });
    }



    }}

我希望有人可以帮助我，谢谢

Answer 1

如果您希望按钮消失，可以使用window.remove(keeper)。如果您不想要图片但仍希望按钮在那里，您可以尝试logo = null，这会将徽标上的图标设置为空，留下一个白色框。如果您在Windows上进行编码，则可以添加keeper.setBackgroundColor(Color.Blue)的背景颜色或背景颜色，但Mac OS的外观因某些原因不允许这样做。（你可以改变外观，但这相当复杂）如果你有一个更复杂的背景我会建议从正确的点用一个截图（在代码中注释掉按钮）和设置标志来取样那个形象。

单击后隐藏JButton（图像）

1 个答案: