我在用第一个ImageIcon替换ImageIcon时遇到麻烦，因此按下了Jbutton。到目前为止，我已经尝试过替换框架.setIcon（myNewImage）;和.remove（）;。不确定现在该怎么做...（我需要替换它们并调整大小。）这是我的代码。 （这应该像是日本的约会游戏之一……请忽略这些图片是本地的，我尚无网站来托管它们。
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import java.util.Scanner;
import javax.swing.ImageIcon;
import javax.swing.*;
import java.awt.*;
public class NestedPanels extends JPanel {
JPanel southBtnPanel = new JPanel(new GridLayout(3, 2, 1, 1)); //grid layout of buttons and declaration of panel SoutbtnPanel
JButton b = new JButton("Say Hello");//1
JButton c = new JButton("Say You Look Good");//1
JButton d = new JButton("Say Sorry I'm Late");//1
JButton e2 = new JButton("So where are we headed?");//2
JButton f = new JButton("Can we go to your place?");//2
JButton g = new JButton("I don't have any money for our date...");//2
public NestedPanels() { //implemeted class
//add action listener
b.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
button1Clicked(e);//when button clicked, invoke method
}
});
c.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
button2Clicked(e);//when button clicked, invoke method
}
});
d.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
button3Clicked(e);//when button clicked, invoke method
}
});
e2.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
button4Clicked(e);//when button clicked, invoke method
}
});
f.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
button5Clicked(e);//when button clicked, invoke method
}
});
g.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
button6Clicked(e);//when button clicked, invoke method
}
});
southBtnPanel.add(b);
southBtnPanel.add(c);
southBtnPanel.add(d);
setBorder(BorderFactory.createEmptyBorder(1, 1, 1, 1)); //layout of buttons "Button text"
setLayout(new BorderLayout());
add(Box.createRigidArea(new Dimension(600, 600))); //space size of text box webapp over all
add(southBtnPanel, BorderLayout.SOUTH);
}
private static void createAndShowGui() {//class to show gui
NestedPanels mainPanel = new NestedPanels(); //mainPanel new class of buttons instantiation
JFrame frame = new JFrame("Date Sim 1.0");//title of webapp on top
frame.getContentPane().add(mainPanel);
ImageIcon icon = new ImageIcon("C:/Users/wchri/Pictures/10346538_10203007241845278_2763831867139494749_n.jpg");
JLabel label = new JLabel(icon);
mainPanel.add(label);
frame.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
frame.pack();
frame.setVisible(true);
}
private void button1Clicked(ActionEvent e) {
southBtnPanel.removeAll();
southBtnPanel.add(e2);
southBtnPanel.add(f);
southBtnPanel.add(g);
southBtnPanel.revalidate();
southBtnPanel.repaint();
String msg = ((JButton)e.getSource()).getActionCommand() ;
JOptionPane.showMessageDialog(this, "Hey there! Ready to get started?", "Christian feels good!", JOptionPane.PLAIN_MESSAGE); //display button Action
}
private void button2Clicked(ActionEvent e) {
southBtnPanel.removeAll();
southBtnPanel.add(e2);
southBtnPanel.add(f);
southBtnPanel.add(g);
southBtnPanel.revalidate();
southBtnPanel.repaint();
String msg = ((JButton)e.getSource()).getActionCommand() ;
JOptionPane.showMessageDialog(this, "Ugh... thanks! You too ready?!", "Christian is a bit... Embarrased.", JOptionPane.PLAIN_MESSAGE); //display button Action
}
private void button3Clicked(ActionEvent e) {
southBtnPanel.removeAll();
southBtnPanel.add(e2);
southBtnPanel.add(f);
southBtnPanel.add(g);
southBtnPanel.revalidate();
southBtnPanel.repaint();
String msg = ((JButton)e.getSource()).getActionCommand() ;
JOptionPane.showMessageDialog(this, "It's ok! Just make sure it doesn't happen again!", "Christian is a bit angry!", JOptionPane.PLAIN_MESSAGE); //display button Action
}
private void button4Clicked(ActionEvent e) {
NestedPanels mainPanel = new NestedPanels(); //mainPanel new class of buttons instantiation
JFrame frame = new JFrame("Date Sim 1.0");//title of webapp on top
frame.getContentPane().add(mainPanel);
JLabel label = new JLabel();
ImageIcon imageTwo = new ImageIcon("C:/Users/wchri/Documents/chrisferry.jpg");
mainPanel.add(label);
label.setIcon(imageTwo);
frame.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
frame.pack();
frame.setVisible(true);
frame.getContentPane().add(mainPanel);
String msg = ((JButton)e.getSource()).getActionCommand() ;
JOptionPane.showMessageDialog(this, "Let's take the ferry to NYC!", "Christian feels good!", JOptionPane.PLAIN_MESSAGE); //display button Action
}
private void button5Clicked(ActionEvent e) {
NestedPanels mainPanel = new NestedPanels(); //mainPanel new class of buttons instantiation
JFrame frame = new JFrame("Date Sim 1.0");//title of webapp on top
frame.getContentPane().add(mainPanel);
JLabel label = new JLabel();
ImageIcon imageThree = new ImageIcon("C:/Users/wchri/Pictures/Screenshots/chrisart.jpg");
mainPanel.add(label);
label.setIcon(imageThree);
frame.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
frame.pack();
frame.setVisible(true);
frame.getContentPane().add(mainPanel);
String msg = ((JButton)e.getSource()).getActionCommand() ;
JOptionPane.showMessageDialog(this, "Don't you think it's a bit soon for that?", "Christian is embarrassed...", JOptionPane.PLAIN_MESSAGE); //display button Action
}
private void button6Clicked(ActionEvent e) {
NestedPanels mainPanel = new NestedPanels(); //mainPanel new class of buttons instantiation
JFrame frame = new JFrame("Date Sim 1.0");//title of webapp on top
frame.getContentPane().add(mainPanel);
JLabel label = new JLabel();
ImageIcon imageFour = new ImageIcon("C:/Users/wchri/Downloads/chrismoney.jpg");
mainPanel.add(label);
label.setIcon(imageFour);
frame.setDefaultCloseOperation(JFrame.HIDE_ON_CLOSE);
frame.pack();
frame.setVisible(true);
frame.getContentPane().add(mainPanel);
String msg = ((JButton)e.getSource()).getActionCommand() ;
JOptionPane.showMessageDialog(this, "I got money!", "Christian is ballin'", JOptionPane.PLAIN_MESSAGE); //display button Action
}
public static void main(String[] args) {
System.out.println("Welcome to Date Sim 1.0 with we1. Are you ready to play? Yes/No?");
Scanner in = new Scanner(System.in);
String confirm = in.nextLine();
if (confirm.equalsIgnoreCase("Yes")) {
System.out.println("Ok hot stuff... Let's start.");
NestedPanels mainPanel = new NestedPanels();
} else {
System.out.println("Maybe some other time!");
return;
}
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
createAndShowGui();
}
});
}
}
答案 0 :(得分：2)
以下是MCVE，它演示了单击Controller<MainView, Type, OptionalController>
时如何更改图标：
JButton我发现写MCVE是一项非常有用的技术。它不仅使帮助变得容易得多，而且
是功能强大的调试工具。很多情况下，在准备一个时，您很可能会发现问题。
它应该代表问题或提出的问题。 不是您的应用程序。