这显然是一个非常简单的问题。但是，我无法解决它。我正在制作一个简单的代码游戏，其中中间有五个按钮，对应于数字1到5.目标是回答顶部给出的数字问题。如果您通过给定的最大数字可以猜出一个问题的次数，我想改变您在屏幕上的生命数量。我有3节课。
我的主要方法包含类：
公共课LevelChanger {
protected static int buttoncount = 0;
protected static int buttonlimit = 20;
protected static int answer = 12;
protected static int level = 1;
protected static int lives = 10;
protected static String Hint = "";
protected static String Question = "default text";
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
CodeGui frame = new CodeGui();
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
checkbuttonlimitAndAnswer();
}
protected static void checkbuttonlimitAndAnswer() {
if (buttoncount > buttonlimit) {
lives--;
buttoncount = 0;
}
}
}
动作侦听器类
public class ActionListeners implements ActionListener {
public void actionPerformed(ActionEvent B) {
CodeGui Gui = new CodeGui();
if (Gui.num1.getName().equals(((Component) B.getSource()).getName())) {
LevelChanger.buttoncount++;
}
if (Gui.num2.getName().equals(((Component) B.getSource()).getName())) {
LevelChanger.buttoncount += 2;
}
if (Gui.num3.getName().equals(((Component) B.getSource()).getName())) {
LevelChanger.buttoncount += 3;
}
if (Gui.num4.getName().equals(((Component) B.getSource()).getName())) {
LevelChanger.buttoncount += 4;
}
if (Gui.num5.getName().equals(((Component) B.getSource()).getName())) {
LevelChanger.buttoncount += 5;
System.out.println(LevelChanger.buttoncount);
}
}
}
最后是gui班：
public class CodeGui extends JFrame {
private static final long serialVersionUID = 1L;
ActionListeners Al = new ActionListeners();
protected JPanel contentPane;
JTextArea questionArea, hintArea;
JLabel livesleft, lblLevel, Maxbutclick;
final JButton num1, num2, num3, num4, num5;
public CodeGui() {
setTitle("The Code Game");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 602, 411);
setResizable(false);
contentPane = new JPanel();
contentPane.setBackground(Color.BLACK);
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
livesleft = new JLabel("Lives Left : " + LevelChanger.lives);
livesleft.setFont(new Font("Stencil Std", Font.BOLD | Font.ITALIC, 14));
livesleft.setForeground(Color.WHITE);
livesleft.setBounds(10, 347, 126, 14);
contentPane.add(livesleft);
lblLevel = new JLabel("level : " + LevelChanger.level);
lblLevel.setFont(new Font("Stencil Std", Font.BOLD | Font.ITALIC, 14));
lblLevel.setForeground(Color.WHITE);
lblLevel.setBounds(468, 347, 108, 14);
contentPane.add(lblLevel);
ActionListeners buttonL = new ActionListeners();
num1 = new JButton("1");
num1.setBounds(10, 229, 89, 23);
num1.setName("button1");
num1.addActionListener(buttonL);
contentPane.add(num1);
num2 = new JButton("2");
num2.setBounds(128, 229, 89, 23);
num2.setName("button2");
num2.addActionListener(buttonL);
contentPane.add(num2);
num3 = new JButton("3");
num3.setBounds(248, 229, 89, 23);
num3.setName("button3");
num3.addActionListener(buttonL);
contentPane.add(num3);
num4 = new JButton("4");
num4.setBounds(374, 229, 89, 23);
num4.setName("button4");
num4.addActionListener(buttonL);
contentPane.add(num4);
num5 = new JButton("5");
num5.setBounds(487, 229, 89, 23);
num5.setName("button5");
num5.addActionListener(buttonL);
contentPane.add(num5);
questionArea = new JTextArea();
questionArea.setBackground(Color.BLACK);
questionArea.setForeground(Color.WHITE);
questionArea.setLineWrap(true);
questionArea.setFont(new Font("Myriad Web Pro Condensed", Font.PLAIN,
14));
questionArea.setWrapStyleWord(true);
questionArea.setText( LevelChanger.Question);
questionArea.setRows(10);
questionArea.setColumns(5);
questionArea.setBounds(68, 21, 461, 159);
contentPane.add(questionArea);
hintArea = new JTextArea();
hintArea.setForeground(Color.WHITE);
hintArea.setBackground(Color.BLACK);
hintArea.setText("Hint : " + LevelChanger.Hint);
hintArea.setBounds(95, 278, 397, 58);
contentPane.add(hintArea);
Maxbutclick = new JLabel("Max Button count for level : "+ LevelChanger.buttonlimit);
Maxbutclick.setFont(new Font("Stencil Std", Font.BOLD | Font.ITALIC, 11));
Maxbutclick.setBackground(Color.BLACK);
Maxbutclick.setForeground(Color.WHITE);
Maxbutclick.setBounds(321, 263, 255, 14);
contentPane.add(Maxbutclick);
}
}
我正在尝试检查buttoncount是否超过buttonlimit。然后，递减lives。其中，转向，应出现在框架中。它没有。
答案 0 :(得分：2)
您的问题是，当您启动应用时，checkbuttonlimitAndAnswer只会被调用一次。因此，您调用它，检入失败（即为假），然后您不再调用它。每次增加buttoncount时都应该调用它。
以下是您的代码的固定版本。
将它与您的版本进行比较，看看我发生了什么变化。
import java.awt.Component;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
public class ActionListeners implements ActionListener {
public void actionPerformed(ActionEvent B) {
CodeGui Gui = new CodeGui();
if (Gui.num1.getName().equals(((Component) B.getSource()).getName())) {
// LevelChanger.buttoncount++;
LevelChanger.incButtonCount(1);
}
if (Gui.num2.getName().equals(((Component) B.getSource()).getName())) {
// LevelChanger.buttoncount += 2;
LevelChanger.incButtonCount(2);
}
if (Gui.num3.getName().equals(((Component) B.getSource()).getName())) {
// LevelChanger.buttoncount += 3;
LevelChanger.incButtonCount(3);
}
if (Gui.num4.getName().equals(((Component) B.getSource()).getName())) {
// LevelChanger.buttoncount += 4;
LevelChanger.incButtonCount(4);
}
if (Gui.num5.getName().equals(((Component) B.getSource()).getName())) {
// LevelChanger.buttoncount += 5;
LevelChanger.incButtonCount(5);
// System.out.println(LevelChanger.buttoncount);
}
}
}
// ===== //
import java.awt.Color;
import java.awt.Font;
import javax.swing.*;
import javax.swing.border.EmptyBorder;
public class CodeGui extends JFrame {
private static final long serialVersionUID = 1L;
ActionListeners Al = new ActionListeners();
protected JPanel contentPane;
JTextArea questionArea, hintArea;
JLabel livesleft, lblLevel, Maxbutclick;
final JButton num1, num2, num3, num4, num5;
public CodeGui() {
setTitle("The Code Game");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setBounds(100, 100, 602, 411);
setResizable(false);
contentPane = new JPanel();
contentPane.setBackground(Color.BLACK);
contentPane.setBorder(new EmptyBorder(5, 5, 5, 5));
setContentPane(contentPane);
contentPane.setLayout(null);
livesleft = new JLabel("Lives Left : " + LevelChanger.lives);
livesleft.setFont(new Font("Stencil Std", Font.BOLD | Font.ITALIC, 14));
livesleft.setForeground(Color.WHITE);
livesleft.setBounds(10, 347, 126, 14);
contentPane.add(livesleft);
lblLevel = new JLabel("level : " + LevelChanger.level);
lblLevel.setFont(new Font("Stencil Std", Font.BOLD | Font.ITALIC, 14));
lblLevel.setForeground(Color.WHITE);
lblLevel.setBounds(468, 347, 108, 14);
contentPane.add(lblLevel);
ActionListeners buttonL = new ActionListeners();
num1 = new JButton("1");
num1.setBounds(10, 229, 89, 23);
num1.setName("button1");
num1.addActionListener(buttonL);
contentPane.add(num1);
num2 = new JButton("2");
num2.setBounds(128, 229, 89, 23);
num2.setName("button2");
num2.addActionListener(buttonL);
contentPane.add(num2);
num3 = new JButton("3");
num3.setBounds(248, 229, 89, 23);
num3.setName("button3");
num3.addActionListener(buttonL);
contentPane.add(num3);
num4 = new JButton("4");
num4.setBounds(374, 229, 89, 23);
num4.setName("button4");
num4.addActionListener(buttonL);
contentPane.add(num4);
num5 = new JButton("5");
num5.setBounds(487, 229, 89, 23);
num5.setName("button5");
num5.addActionListener(buttonL);
contentPane.add(num5);
questionArea = new JTextArea();
questionArea.setBackground(Color.BLACK);
questionArea.setForeground(Color.WHITE);
questionArea.setLineWrap(true);
questionArea.setFont(new Font("Myriad Web Pro Condensed", Font.PLAIN,
14));
questionArea.setWrapStyleWord(true);
questionArea.setText(LevelChanger.Question);
questionArea.setRows(10);
questionArea.setColumns(5);
questionArea.setBounds(68, 21, 461, 159);
contentPane.add(questionArea);
hintArea = new JTextArea();
hintArea.setForeground(Color.WHITE);
hintArea.setBackground(Color.BLACK);
hintArea.setText("Hint : " + LevelChanger.Hint);
hintArea.setBounds(95, 278, 397, 58);
contentPane.add(hintArea);
Maxbutclick = new JLabel("Max Button count for level : "
+ LevelChanger.buttonlimit);
Maxbutclick
.setFont(new Font("Stencil Std", Font.BOLD | Font.ITALIC, 11));
Maxbutclick.setBackground(Color.BLACK);
Maxbutclick.setForeground(Color.WHITE);
Maxbutclick.setBounds(321, 263, 255, 14);
contentPane.add(Maxbutclick);
}
public void update() {
livesleft.setText("Lives Left : " + LevelChanger.lives);
livesleft.repaint();
}
}
// ===== //
import java.awt.EventQueue;
public class LevelChanger {
private static int buttoncount = 0;
private static CodeGui frame = null;
protected static int buttonlimit = 20;
protected static int answer = 12;
protected static int level = 1;
protected static int lives = 10;
protected static String Hint = "";
protected static String Question = "default text";
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
public void run() {
try {
CodeGui frame = new CodeGui();
LevelChanger.frame = frame;
frame.setVisible(true);
} catch (Exception e) {
e.printStackTrace();
}
}
});
checkbuttonlimitAndAnswer();
}
protected static void checkbuttonlimitAndAnswer() {
System.out.println("1) buttoncount = " + buttoncount + " // lives = " + lives + " // buttonlimit = " + buttonlimit);
if (buttoncount > buttonlimit) {
lives--;
buttoncount = 0;
}
System.out.println("2) buttoncount = " + buttoncount + " // lives = " + lives + " // buttonlimit = " + buttonlimit);
if (frame != null) {
frame.update();
}
}
protected static void incButtonCount(int val) {
buttoncount += val;
checkbuttonlimitAndAnswer();
}
}
// ===== //