如果可以解决问题，我可以提供所有代码，但是我相信，由于这只会影响一个类，因此可以在此处解决，以简化问题。
我有一个纸牌项目（请注意程序包/类的名称，这是反复试验的，我没有删除旧项目），拒绝接受我拥有的GameArea类，该类扩展了JPanel。 GameArea在其自己的单独实例中运行良好，其中tester类仅在JFrame上运行JPanel。该测试人员类使用setContentPane（newGame）将其添加到JFrame中。
在下面的类中，getContentPane（）。add（newGame）或setContentPane（newGame）均未成功将游戏添加到框架。此类设置了带有两个按钮的主菜单。第一个将其带入“开始新游戏”屏幕，然后应该开始游戏的按钮将是：
1）如果使用getContentPane（）。add（newGame）仅显示绿色屏幕
2）显示按下的“开始新游戏”，如果使用setContentPane（newGame），则在“开始新游戏”屏幕上冻结。这令人沮丧，因为在此之前调用了getContentPane（）。removeAll（）...但是，使用菜单，我可以返回主菜单，并且仍然在冻结和修复的无限循环中运行。
我怀疑是因为我对挥杆课程的了解不足，但我缺少一些东西。非常感谢您的帮助，因为我需要在2天内完成此操作。
package guitestersolitairenew;
/**
*
* @author Josh
* @version 1.00 2015/3/28
*/
import java.awt.BorderLayout;
import java.awt.Component;
import java.awt.Container;
import java.awt.event.ActionEvent;
import java.awt.event.KeyEvent;
import javax.swing.AbstractAction;
import static javax.swing.Action.MNEMONIC_KEY;
import static javax.swing.Action.SHORT_DESCRIPTION;
import javax.swing.ImageIcon;
import javax.swing.JLabel;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JMenu;
import javax.swing.JMenuBar;
import javax.swing.JMenuItem;
import javax.swing.JScrollPane;
import javax.swing.JTextArea;
import javax.swing.GroupLayout;
import javax.swing.JTextField;
import javax.swing.WindowConstants;
public class GUITesterSolitaireNew extends JFrame
{
public GUITesterSolitaireNew()
{
initComponents();
setMainMenu();
}
private void initComponents()
{
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
setBackground(new java.awt.Color(80, 135, 40));
setTitle("Klondike Solitaire");
getContentPane().setBackground(new java.awt.Color(85,130,40));
setSize(1200,700);
setLocationRelativeTo(null);
setResizable(false);
JMenuBar menubar = new JMenuBar();
menubar.add(new JMenu("File"));
class MainMenu extends AbstractAction
{
public MainMenu(String text, ImageIcon icon, String desc, Integer mnemonic)
{
super(text,icon);
putValue(SHORT_DESCRIPTION, desc);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent e)
{
setMainMenu();
}
}
menubar.getMenu(0).add(new JMenuItem(new MainMenu("Main Menu", null, "Return to the main menu.", KeyEvent.VK_M)));
class NewGame extends AbstractAction
{
public NewGame(String text, ImageIcon icon, String desc, Integer mnemonic)
{
super(text,icon);
putValue(SHORT_DESCRIPTION, desc);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent e)
{
newGame(e);
}
}
menubar.getMenu(0).add(new JMenuItem(new NewGame("New Game", null, "Start a new game.", KeyEvent.VK_N)));
class RestartGame extends AbstractAction
{
public RestartGame(String text, ImageIcon icon, String desc, Integer mnemonic)
{
super(text,icon);
putValue(SHORT_DESCRIPTION, desc);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent e)
{
//Fix to restart game.
}
}
menubar.getMenu(0)
.add(new JMenuItem(new RestartGame("Restart Game", null, "Restart the current game.", KeyEvent.VK_R)));
class LoadGame extends AbstractAction
{
public LoadGame(String text, ImageIcon icon, String desc, Integer mnemonic)
{
super(text,icon);
putValue(SHORT_DESCRIPTION, desc);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent e)
{
//Fix to load game.
}
}
menubar.getMenu(0).add(new JMenuItem(new LoadGame("Load Game", null, "Load a saved game.", KeyEvent.VK_L)));
class SaveGame extends AbstractAction
{
public SaveGame(String text, ImageIcon icon, String desc, Integer mnemonic)
{
super(text,icon);
putValue(SHORT_DESCRIPTION, desc);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent e)
{
//Fix to save game
}
}
menubar.getMenu(0).add(new JMenuItem(new SaveGame("Save Game", null, "Create a save file.", KeyEvent.VK_S)));
class ExitAction extends AbstractAction
{
public ExitAction (String text, ImageIcon icon, String desc, Integer mnemonic)
{
super(text, icon);
putValue(SHORT_DESCRIPTION, desc);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent e)
{
System.exit(0);
}
}
menubar.getMenu(0).add(new JMenuItem(new ExitAction("Exit", null, "Exit from the program.", KeyEvent.VK_E)));
menubar.add(new JMenu("Help"));
class Rules extends AbstractAction
{
public Rules (String text, ImageIcon icon, String desc, Integer mnemonic)
{
super(text, icon);
putValue(SHORT_DESCRIPTION, desc);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent e)
{
JFrame rules = new JFrame("Klondike Solitaire Rules");
rules.setSize(400,430);
rules.setLocationRelativeTo(null);
rules.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE);
JTextArea jta = new JTextArea();
jta.setEditable(false);
Component add = rules.add(jta);
JScrollPane jsp = new JScrollPane();
jsp.setViewportView(jta);
rules.getContentPane().add(jsp, java.awt.BorderLayout.CENTER);
jta.setCaretPosition(jta.getText().length());
jta.append("Klondike Solitaire Rules:\n\n");
jta.setCaretPosition(jta.getText().length());
jta.append("The game starts with a standard 52 card deck.\n");
jta.setCaretPosition(jta.getText().length());
jta.append("The cards are first dealt into 7 'tableaus' where the cards\n");
jta.setCaretPosition(jta.getText().length());
jta.append("are all turned face down and one card laid onto each tableau.\n");
jta.setCaretPosition(jta.getText().length());
jta.append("The left one is turned up, and the process is repeated for the\n");
jta.setCaretPosition(jta.getText().length());
jta.append("2nd to 7th tableaus. The 2nd card in the 2nd tableau is turned up.\n");
jta.setCaretPosition(jta.getText().length());
jta.append("Each tableau receives as many cards as the column position. The\n");
jta.setCaretPosition(jta.getText().length());
jta.append("last card in each tableau will be face up. The deck is placed\n");
jta.setCaretPosition(jta.getText().length());
jta.append("off to the side.\n\n");
jta.setCaretPosition(jta.getText().length());
jta.append("The cards are drawn one at a time from deck. Valid moves are: \n");
jta.setCaretPosition(jta.getText().length());
jta.append("-Move card from deck to tableau\n");
jta.setCaretPosition(jta.getText().length());
jta.append("-Move card from deck to foundation <stacks by suit>\n");
jta.setCaretPosition(jta.getText().length());
jta.append("-Click deck again for another card.\n");
jta.setCaretPosition(jta.getText().length());
jta.append("The deck is cycled if cards are remaining. The cards, after\n");
jta.setCaretPosition(jta.getText().length());
jta.append("being face up, will sort in descent of value and opposing\n");
jta.setCaretPosition(jta.getText().length());
jta.append("face color: i.e. a black 6 can only go on top of a red 7.\n\n");
jta.setCaretPosition(jta.getText().length());
jta.append("The player wins by moving all cards from the deck and tableaus\n");
jta.setCaretPosition(jta.getText().length());
jta.append("to the 4 foundations. The foundations sort by suit in ascending\n");
jta.setCaretPosition(jta.getText().length());
jta.append("order of value, starting with the ace. All aces are low.");
rules.setResizable(false);
rules.setVisible(true);
}
}
menubar.getMenu(1)
.add(new JMenuItem(new Rules("Rules", null, "Show a popup aid for the rules of the game.", KeyEvent.VK_R)));
class Info extends AbstractAction
{
public Info (String text, ImageIcon icon, String desc, Integer mnemonic)
{
super(text, icon);
putValue(SHORT_DESCRIPTION, desc);
putValue(MNEMONIC_KEY, mnemonic);
}
@Override
public void actionPerformed(ActionEvent e)
{
JFrame info = new JFrame("Development Info");
info.setSize(450,225);
info.setLocationRelativeTo(null); //sends it to center of screen
info.setDefaultCloseOperation(WindowConstants.DISPOSE_ON_CLOSE); //does not close application, but actually kills the window when closed
JTextArea jta = new JTextArea();
jta.setEditable(false); //The user can't type on the text box.
Component add = info.add(jta); //abstraction that adds the component jta to window info
JScrollPane jsp = new JScrollPane();
jsp.setViewportView(jta); //puts the text area in the scroll pane
info.getContentPane().add(jsp, java.awt.BorderLayout.CENTER); //centers the text area and scroll pane to be the main subject of the frame
jta.setCaretPosition(jta.getText().length()); //sets the cursor to the end of the text typed so far
//edited out
info.setResizable(false);
info.setVisible(true);
}
}
menubar.getMenu(1)
.add(new JMenuItem(new Info("Info", null, "Information about Klondike Solitaire.", KeyEvent.VK_I)));
setJMenuBar(menubar);
}
private void newGame(java.awt.event.ActionEvent evt)
{
getContentPane().removeAll();
getContentPane().repaint();
setBackground(new java.awt.Color(80, 135, 40));
JLabel jLabel1 = new JLabel();
JButton jButton1 = new JButton();
jLabel1.setBackground(new java.awt.Color(80, 135, 40));
jLabel1.setFont(new java.awt.Font("Kunstler Script", 1, 120)); // NOI18N
jLabel1.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
jLabel1.setText("Klondike Solitaire");
jLabel1.setVerticalAlignment(javax.swing.SwingConstants.CENTER);
jLabel1.setMaximumSize(new java.awt.Dimension(800, 100));
jLabel1.setMinimumSize(new java.awt.Dimension(800, 100));
jLabel1.setPreferredSize(new java.awt.Dimension(800, 100));
jLabel1.setRequestFocusEnabled(true);
jButton1.setText("Start New Game");
jButton1.setFont(new java.awt.Font("Times New Roman", 1, 20));
jButton1.setMaximumSize(new java.awt.Dimension(200, 50));
jButton1.setMinimumSize(new java.awt.Dimension(200, 50));
jButton1.setPreferredSize(new java.awt.Dimension(200, 50));
jButton1.addActionListener(new java.awt.event.ActionListener()
{
@Override
public void actionPerformed(java.awt.event.ActionEvent evt)
{
startNewGame();
}
});
JLabel replay = new JLabel("Replay game from seed:");
replay.setBackground(new java.awt.Color(80,135,40));
replay.setFont(new java.awt.Font("Times New Roman", 1, 20));
replay.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
replay.setVerticalAlignment(javax.swing.SwingConstants.CENTER);
replay.setMaximumSize(new java.awt.Dimension(220, 50));
replay.setMinimumSize(new java.awt.Dimension(220, 50));
replay.setPreferredSize(new java.awt.Dimension(220, 50));
JTextField getSeed = new JTextField();
getSeed.setCaretPosition(getSeed.getText().length());
getSeed.setFont(new java.awt.Font("Times New Roman", 1, 18));
getSeed.setMaximumSize(new java.awt.Dimension(150, 24));
getSeed.setMinimumSize(new java.awt.Dimension(150, 24));
getSeed.setPreferredSize(new java.awt.Dimension(150, 24));
JButton startSeed = new JButton("Start Game");
startSeed.setFont(new java.awt.Font("Times New Roman", 1, 20));
startSeed.setMaximumSize(new java.awt.Dimension(130, 30));
startSeed.setMinimumSize(new java.awt.Dimension(130, 30));
startSeed.setPreferredSize(new java.awt.Dimension(130, 30));
startSeed.addActionListener(new java.awt.event.ActionListener()
{
@Override
public void actionPerformed(java.awt.event.ActionEvent evt)
{
startNewGame(Integer.parseInt(getSeed.getText()));
}
});
JButton back = new JButton("Back to Main Menu");
back.setFont(new java.awt.Font("Times New Roman", 1, 20));
back.setMaximumSize(new java.awt.Dimension(200, 50));
back.setMinimumSize(new java.awt.Dimension(200, 50));
back.setPreferredSize(new java.awt.Dimension(200, 50));
back.addActionListener(new java.awt.event.ActionListener()
{
@Override
public void actionPerformed(java.awt.event.ActionEvent evt)
{
setMainMenu();
}
});
GroupLayout layout = new GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(GroupLayout.Alignment.CENTER)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.CENTER)
.addGroup(layout.createSequentialGroup()
.addGap(200, 200, 200)
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.CENTER, false)
.addComponent(back, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(layout.createSequentialGroup()
.addComponent(replay, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(getSeed, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(startSeed, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addComponent(jButton1, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addGroup(layout.createSequentialGroup()
.addGap(200, 200, 200)
.addComponent(jLabel1, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)))
.addContainerGap(90, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(150, 150, 150)
.addComponent(jLabel1, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
.addGap(10, 10, 10)
.addComponent(jButton1, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
.addGap(35, 35, 35)
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.CENTER)
.addComponent(replay, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
.addComponent(getSeed, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
.addComponent(startSeed, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
.addGap(180, 180, 180)
.addComponent(back, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE))
);
}
private void startNewGame()
{
getContentPane().removeAll();
getContentPane().repaint();
newGame.newGame();
Container pane = getContentPane();
pane.add(newGame);
setContentPane(pane);
getContentPane().revalidate();
getContentPane().repaint();
}
public void startNewGame(int seed)
{
getContentPane().removeAll();
getContentPane().repaint();
newGame.newGame();
add(newGame);
}
private void setMainMenu()
{
getContentPane().removeAll();
getContentPane().repaint();
setBackground(new java.awt.Color(80, 135, 40));
JLabel jLabel1 = new javax.swing.JLabel();
JButton jButton1 = new javax.swing.JButton();
JButton jButton2 = new javax.swing.JButton();
jLabel1.setBackground(new java.awt.Color(80, 135, 40));
jLabel1.setFont(new java.awt.Font("Kunstler Script", 1, 120)); // NOI18N
jLabel1.setHorizontalAlignment(javax.swing.SwingConstants.CENTER);
jLabel1.setText("Klondike Solitaire");
jLabel1.setVerticalAlignment(javax.swing.SwingConstants.CENTER);
jLabel1.setMaximumSize(new java.awt.Dimension(800, 100));
jLabel1.setMinimumSize(new java.awt.Dimension(800, 100));
jLabel1.setPreferredSize(new java.awt.Dimension(800, 100));
jLabel1.setRequestFocusEnabled(true);
jButton1.setText("New Game");
jButton1.setFont(new java.awt.Font("Times New Roman", 1, 20));
jButton1.setMaximumSize(new java.awt.Dimension(200, 50));
jButton1.setMinimumSize(new java.awt.Dimension(200, 50));
jButton1.setPreferredSize(new java.awt.Dimension(200, 50));
jButton1.addActionListener(new java.awt.event.ActionListener()
{
@Override
public void actionPerformed(java.awt.event.ActionEvent evt)
{
newGame(evt);
}
});
jButton2.setText("Load Game");
jButton2.setFont(new java.awt.Font("Times New Roman", 1, 20));
jButton2.setMaximumSize(new java.awt.Dimension(200, 50));
jButton2.setMinimumSize(new java.awt.Dimension(200, 50));
jButton2.setPreferredSize(new java.awt.Dimension(200, 50));
GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(GroupLayout.Alignment.CENTER)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.CENTER)
.addGroup(layout.createSequentialGroup()
.addGap(200, 200, 200)
.addGroup(layout.createParallelGroup(GroupLayout.Alignment.CENTER, false)
.addComponent(jButton2, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton1, GroupLayout.DEFAULT_SIZE, GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)))
.addGroup(layout.createSequentialGroup()
.addGap(200, 200, 200)
.addComponent(jLabel1, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)))
.addContainerGap(90, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(150, 150, 150)
.addComponent(jLabel1, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
.addGap(10, 10, 10)
.addComponent(jButton1, GroupLayout.PREFERRED_SIZE, GroupLayout.DEFAULT_SIZE, GroupLayout.PREFERRED_SIZE)
.addGap(5, 5, 5)
.addComponent(jButton2)
.addContainerGap(120, Short.MAX_VALUE))
);
}
/**
* @param args the command line arguments
*/
public static void main(String args[])
{
/* Set the Nimbus look and feel */
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try
{
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels())
{
System.out.println("Main.main(): 492");
if ("Nimbus".equals(info.getName()))
{
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
}
catch (ClassNotFoundException | InstantiationException | IllegalAccessException | javax.swing.UnsupportedLookAndFeelException ex)
{
java.util.logging.Logger.getLogger(GUITesterSolitaireNew.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable()
{
@Override
public void run()
{
new GUITesterSolitaireNew().setVisible(true);
}
});
}
private javax.swing.JInternalFrame jInternalFrame1;
private GameArea newGame = new GameArea();
}
最佳答案
不要使用setContentPane切换视图，而是使用CardLayout，这就是它的设计目的。有关更多详细信息，请参见How to Use CardLayout
而且，这样做没有什么意义。
setContentPane(pane);
getContentPane().revalidate();
getContentPane().repaint();
在这种情况下，不是
contentPane需要重新验证，而是contentPane的父级...