我正在嘗試爲棋盤遊戲風險製作一個主菜單。有一個自定義背景圖像,理想情況下,我希望按鈕出現在圖像上。但是,當我運行我的代碼時,只會出現名爲「新遊戲」的按鈕,如果將鼠標懸停在其上,則會出現其他按鈕。我已經嘗試了幾乎所有東西(這裏有類似的問題),但似乎無法解決問題。也許它與我的代碼有關?我感謝任何幫助/建議!JButtons被圖像覆蓋
package View;
import java.awt.Color;
import java.awt.Dimension;
import java.awt.FlowLayout;
import java.awt.Graphics;
import java.awt.GridLayout;
import java.awt.Image;
import java.awt.event.ActionListener;
import java.awt.image.BufferedImage;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JButton;
import javax.swing.SpringLayout;
/**
* These classes set up the GUI of the Risk program.
* The main menu, dialog for setting player count, dialog for name/color settings for each
* player, the Risk game board, and a menu used during a Risk game session are included.
**/
public class Menu extends JFrame {
private JPanel mainPanel;
private JButton newGameButton;
private JButton loadGameButton;
private JButton quitButton;
private JButton ruleButton;
private String newGameButtonName = "newGameBtn";
private String loadGameButtonName = "loadGameBtn";
private String quitButtonName = "quitBtn";
private String ruleButtonName = "rulebtn";
//private SpringLayout mainLayout;
private static BufferedImage img;
/**
* Constructs the main menu.
**/
public Menu()
{
add(mainMenu());
//setTitle("Risk: UConn Edition");
setPreferredSize(new Dimension(640, 700));
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setLocationRelativeTo(null);
setResizable(false);
toFront();
pack();
setVisible(true);
}
/**
* creates the buttons for the jPanel
*
* @return
*/
private JPanel mainMenu()
{
// Creates the panel
mainPanel = new JPanel();
// Sets Layout
//mainLayout = new SpringLayout();
mainPanel.setLayout(null);
// Creates buttons
newGameButton = new JButton("New Game");
newGameButton.setBounds(20,300,150,50);
newGameButton.setOpaque(false);
newGameButton.setContentAreaFilled(false);
newGameButton.setForeground(Color.RED);
newGameButton.setBackground(Color.BLUE);
loadGameButton = new JButton("Load Game");
loadGameButton.setBounds(20,400,150,50);
//loadGameButton.setOpaque(false);
//loadGameButton.setContentAreaFilled(false);
loadGameButton.setForeground(Color.RED);
quitButton = new JButton("Quit");
quitButton.setBounds(490,400,150,50);
quitButton.setOpaque(false);
quitButton.setContentAreaFilled(false);
quitButton.setForeground(Color.RED);
ruleButton = new JButton("Rules");
ruleButton.setBounds(490,300,150,50);
ruleButton.setOpaque(false);
ruleButton.setContentAreaFilled(false);
ruleButton.setForeground(Color.RED);
// Sets button commands
newGameButton.setActionCommand(newGameButtonName);
loadGameButton.setActionCommand(loadGameButtonName);
quitButton.setActionCommand(quitButtonName);
// Adds buttons to mainPanel
mainPanel.add(newGameButton);
mainPanel.add(loadGameButton);
mainPanel.add(quitButton);
mainPanel.add(ruleButton);
// add(mainPanel);
return mainPanel;
}
private Image createImage(){
try {
img = ImageIO.read(
Menu.class.getResource("../resource/riskUconn.jpg"));
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return img;
}
/**
* paint method
*/
@Override
public void paint (Graphics g) {
Image img = createImage();
g.drawImage(img, 20,20,this);
super.paint(g);
}
// Action listeners for Menu
protected void riskViewActionListeners(ActionListener evt)
{
newGameButton.addActionListener(evt);
loadGameButton.addActionListener(evt);
quitButton.addActionListener(evt);
}
public static void main(String [] args){
Menu m = new Menu();
}
}
的OP使用'JFrame',雖然。 – johnchen902 2015-04-02 03:10:28
如果我嘗試使用paintComponent,它給了我錯誤「Menu類型的paintComponent(Graphics)方法必須覆蓋或實現一個超類型方法」,所以如果我做了super.paintComponent(g)給了我錯誤「方法paintComponent(圖形)未定義爲JFrame類型「,因爲我使用JFrame作爲@ johnchen902聲明。 – user2938241 2015-04-02 03:13:18
@ johnchen902更糟的是,檢查更新 – MadProgrammer 2015-04-02 03:13:20