所以我用Java创建了一个游戏，我遇到了一个小问题。每当我运行应用程序时，GUI都不会显示在屏幕上，关闭应用程序的唯一方法是使用Windows任务管理器。在应用程序中，您选择一个用户名并单击一个输入按钮，该按钮将创建一个播放游戏的新窗口。但是在单击按钮后，没有任何GUI加载，您无法关闭应用程序。
基本上，当您单击按钮时，会调用一个方法来处理当前窗口并启动游戏窗口。该方法的代码如下：
public void login(String name) {
String[] args={};
dispose();
SingleplayerGUI.main(args);
}
这是SingleplayerGUI类的代码：
public SingleplayerGUI(String userName, Singleplayer sp) {
this.userName = userName;
setResizable(false);
setTitle("Console Clash Singleplayer");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(880, 550);
setLocationRelativeTo(null);
System.setIn(inPipe);
try {
System.setOut(new PrintStream(new PipedOutputStream(outPipe), true));
inWriter = new PrintWriter(new PipedOutputStream(inPipe), true);
} catch (IOException e1) {
e1.printStackTrace();
}
contentPane = new JPanel();
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
GridBagLayout gbl_contentPane = new GridBagLayout();
gbl_contentPane.columnWidths = new int[] { 28, 815, 30, 7 }; // SUM = 880
gbl_contentPane.rowHeights = new int[] { 25, 485, 40 }; // SUM = 550
contentPane.setLayout(gbl_contentPane);
history = new JTextPane();
history.setEditable(false);
JScrollPane scroll = new JScrollPane(history);
caret = (DefaultCaret) history.getCaret();
caret.setUpdatePolicy(DefaultCaret.ALWAYS_UPDATE);
GridBagConstraints scrollConstraints = new GridBagConstraints();
scrollConstraints.insets = new Insets(0, 0, 5, 5);
scrollConstraints.fill = GridBagConstraints.BOTH;
scrollConstraints.gridx = 0;
scrollConstraints.gridy = 0;
scrollConstraints.gridwidth = 2;
scrollConstraints.gridheight = 2;
scrollConstraints.weightx = 1;
scrollConstraints.weighty = 1;
scrollConstraints.insets = new Insets(0, 0, 5, -64);
contentPane.add(scroll, scrollConstraints);
txtMessage = new JTextField();
txtMessage.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
Color color = new Color(92, 219, 86);
String text = txtMessage.getText();
inWriter.println(text);
console(txtMessage.getText(), color);
command = txtMessage.getText();
}
}
});
GridBagConstraints gbc_txtMessage = new GridBagConstraints();
gbc_txtMessage.insets = new Insets(0, 0, 0, 25);
gbc_txtMessage.fill = GridBagConstraints.HORIZONTAL;
gbc_txtMessage.gridx = 0;
gbc_txtMessage.gridy = 2;
gbc_txtMessage.gridwidth = 2;
gbc_txtMessage.weightx = 1;
gbc_txtMessage.weighty = 0;
txtMessage.setColumns(5);
contentPane.add(txtMessage, gbc_txtMessage);
chat = new JTextPane();
chat.setEditable(false);
JScrollPane chatscroll = new JScrollPane(chat);
caret = (DefaultCaret) chat.getCaret();
caret.setUpdatePolicy(DefaultCaret.ALWAYS_UPDATE);
GridBagConstraints chatscrollConstraints = new GridBagConstraints();
chatscrollConstraints.insets = new Insets(0, 0, 5, 5);
chatscrollConstraints.fill = GridBagConstraints.BOTH;
chatscrollConstraints.gridx = 0;
chatscrollConstraints.gridy = 0;
chatscrollConstraints.gridwidth = 2;
chatscrollConstraints.gridheight = 2;
chatscrollConstraints.weightx = 1;
chatscrollConstraints.weighty = 1;
chatscrollConstraints.insets = new Insets(150, 600, 5, -330);
contentPane.add(chatscroll, chatscrollConstraints);
chatMessage = new JTextField();
final String name = this.userName;
chatMessage.addKeyListener(new KeyAdapter() {
public void keyPressed(KeyEvent e) {
if (e.getKeyCode() == KeyEvent.VK_ENTER) {
chatconsole(name + ": " + chatMessage.getText());
}
}
});
GridBagConstraints gbc_chatMessage = new GridBagConstraints();
gbc_txtMessage.insets = new Insets(000, 600, 000, -330);
gbc_txtMessage.fill = GridBagConstraints.HORIZONTAL;
gbc_txtMessage.gridx = 0;
gbc_txtMessage.gridy = 2;
gbc_txtMessage.gridwidth = 2;
gbc_txtMessage.weightx = 1;
gbc_txtMessage.weighty = 0;
txtMessage.setColumns(5);
contentPane.add(chatMessage, gbc_txtMessage);
JButton btnSend = new JButton("Send");
btnSend.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e) {
Color color = new Color(92, 219, 86);
String text = txtMessage.getText();
inWriter.println(text);
console(txtMessage.getText(), color);
command = txtMessage.getText();
}
});
GridBagConstraints gbc_btnSend = new GridBagConstraints();
gbc_btnSend.insets = new Insets(0, 0, 0, 275);
gbc_btnSend.gridx = 2;
gbc_btnSend.gridy = 2;
gbc_btnSend.weightx = 0;
gbc_btnSend.weighty = 0;
contentPane.add(btnSend, gbc_btnSend);
list = new JList();
GridBagConstraints gbc_list = new GridBagConstraints();
gbc_list.insets = new Insets(0, 600, 330, -330);
gbc_list.fill = GridBagConstraints.BOTH;
gbc_list.gridx = 0;
gbc_list.gridy = 0;
gbc_list.gridwidth = 2;
gbc_list.gridheight = 2;
JScrollPane p = new JScrollPane();
p.setViewportView(list);
contentPane.add(p, gbc_list);
list.setFont(new Font("Verdana", 0, 24));
System.out.println("HEY");
setVisible(true);
new SwingWorker<Void, String>() {
protected Void doInBackground() throws Exception {
Scanner s = new Scanner(outPipe);
while (s.hasNextLine()) {
String line = s.nextLine();
publish(line);
}
return null;
}
@Override protected void process(java.util.List<String> chunks) {
for (String line : chunks) {
try {
Document doc = history.getDocument();
doc.insertString(doc.getLength(), line + "\r\n", null);
} catch(BadLocationException exc) {
exc.printStackTrace();
}
}
}
}.execute();
Singleplayer spp = new Singleplayer();
Singleplayer.startOfGame();
setVisible(true);
}
public static void console(String message, Color color) {
txtMessage.setText("");
try {
StyledDocument doc = history.getStyledDocument();
Style style = history.addStyle("", null);
StyleConstants.setForeground(style, color);
doc.insertString(doc.getLength(), message + "\r\n", style);
} catch(BadLocationException exc) {
exc.printStackTrace();
}
}
public static void console(String message) {
txtMessage.setText("");
try {
Document doc = history.getDocument();
doc.insertString(doc.getLength(), message + "\r\n", null);
} catch(BadLocationException exc) {
exc.printStackTrace();
}
}
public void chatconsole(String message) {
chatMessage.setText("");
try {
Document doc = chat.getDocument();
doc.insertString(doc.getLength(), message + "\r\n", null);
} catch(BadLocationException exc) {
exc.printStackTrace();
}
}
public static void single() {
Singleplayer sp = new Singleplayer();
new SingleplayerGUI("", sp);
}
public static void main(String[] args) {
Singleplayer sp = new Singleplayer();
new SingleplayerGUI("", sp);
}
单人游戏课程：
public static void startOfGame(){
System.out.println("HEY");
SingleplayerGUI.console("Welcome to Console Clash Pre Alpha Version 1!");
SingleplayerGUI.console("Created by Drift");
SingleplayerGUI.console("Published by Boring Games");
SingleplayerGUI.console("");
SingleplayerGUI.console("");
menuScreen();
}
static void menuScreen() {
Scanner scan = new Scanner(System.in);
System.out.println("To play the game, type 'start'. To quit, type 'quit'.");
String menu = scan.nextLine();
if (menu.equals("start")) {
start();
} else if (menu.equals("quit")) {
quit();
} else {
menuScreen();
}
}
private static void quit() {
SingleplayerGUI.console("You quit the game.");
}
private static void start() {
SingleplayerGUI.console("You started the game.");
}
到目前为止，我已经发现将outPipe添加到控制台时会出现最常见的问题。我能解决这个问题，还是我不能在这个应用程序中使用outPipes？
提前感谢您的帮助。
答案 0 :(得分：0)
调用setVisible（）方法两次。在Singleplayer.startOfGame（）之后删除第二个setVisible（）调用; SingleplayerGUI构造函数中的行。