我目前正在尝试编写记忆/配对游戏。我在尝试找出用户找到匹配的卡片后如何禁用按钮时遇到问题。我知道我需要存储第一次点击的值并将其与第二次点击进行比较，但是仍然不确定它是如何工作的……如果有人可以帮助，将不胜感激。谢谢。
考虑此代码，我重新创建了游戏的更简单版本，您可以在下面实际运行它：
主要：
public static void main(String[] args) {
start start = new start();
start.main();
}
}
框架类别：
class start {
JToggleButton DisplayCards[][] = new JToggleButton[4][4];
Shuffle shuffle = new Shuffle();
void main() {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(600, 600);
int y = 20;
int x = 60;
for (int i = 0; i < DisplayCards.length; ++i) {
for (int j = 0; j < DisplayCards[i].length; ++j) {
DisplayCards[i][j] = new JToggleButton("Click Me!");
DisplayCards[i][j].setBounds(x, y, 90, 126);
y = y + 135;
if (y >= 540) {
y = 20;
x = x + 120;
}
frame.add(DisplayCards[i][j]);
DisplayCards[i][j].addActionListener(new Clicked(i, j, shuffle));
}
}
frame.setLayout(null);
frame.setVisible(true);
}
}
洗牌数组的类：
class Shuffle {
String[][] cards = {
{"A", "B", "C", "D"},
{"E", "F", "G", "H"},
{"A", "B", "C", "D"},
{"E", "F", "G", "H"}
};
public void random() {
for (int i = 0; i < cards.length; i++) {
for (int j = 0; j < cards[i].length; j++) {
int i1 = (int) (Math.random() * cards.length);
int j1 = (int) (Math.random() * cards[i].length);
String temp = cards[i][j];
cards[i][j] = cards[i1][j1];
cards[i1][j1] = temp;
}
}
}
}
ActionListener的类：
class Clicked implements ActionListener {
String first;
start matching = new start();
boolean state = false;
Shuffle shuffle;
JToggleButton tBtn;
private int i;
private int j;
int posI;
int posJ;
public Clicked(int i, int j, Shuffle shuffle) {
this.i = i;
this.j = j;
this.shuffle = shuffle;
}
public void actionPerformed(ActionEvent e) {
tBtn = (JToggleButton) e.getSource();
if (tBtn.isSelected()) {
tBtn.setText(shuffle.cards[i][j]);
if (!state) {
first = shuffle.cards[i][j];
posI = i;
posJ = j;
System.out.println(first);
state = true;
} else {
if (first.equals(shuffle.cards[i][j])) {
tBtn.setEnabled(false);
System.out.println("Correct!");
} else if (!first.equals(shuffle.cards[i][j])) {
System.out.println("Not it");
tBtn.setText("Click Me!");
matching.DisplayCards[posI][posJ].setText("Click Me!");
first = null;
posI = 0;
posJ = 0;
state = false;
}
}
} else {
tBtn.setText("Click Me!");
}
}
}
以下是一个文件的文件（将整个代码复制粘贴到Start.java中并运行）。请注意以下注释：
import java.awt.Color;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JFrame;
import javax.swing.JToggleButton;
//Java Naming Conventions: https://www.geeksforgeeks.org/java-naming-conventions/
public class Start {
JToggleButton displayCards[][] = new JToggleButton[4][4];
Shuffle shuffle = new Shuffle();
private static final int NO_PREVIOUS = -1;
//static fileds for i,j of previous button clicked
private int previousI = NO_PREVIOUS, previousJ = NO_PREVIOUS;
void main() {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setSize(600, 600);
int y = 20, x = 60;
for (int i = 0; i < displayCards.length; ++i) {
for (int j = 0; j < displayCards[i].length; ++j) {
displayCards[i][j] = new JToggleButton("Click Me!");
displayCards[i][j].setBounds(x, y, 90, 126);
y = y + 135;
if (y >= 540) {
y = 20;
x = x + 120;
}
frame.add(displayCards[i][j]);
displayCards[i][j].addActionListener(new Clicked(i, j, shuffle));
}
}
frame.setLayout(null); //avoid null layout :https://docs.oracle.com/javase/tutorial/uiswing/layout/visual.html
frame.setVisible(true);
}
public static void main(String[] args) {
Start Start = new Start();
Start.main();
}
//to have easy access to Start members make the ActionListener an inner class
class Clicked implements ActionListener {
private static final String HIDE_TEXT = "Click Me!";
private final Shuffle shuffle;
private final int i, j;
public Clicked(int i, int j, Shuffle shuffle) {
this.i = i;
this.j = j;
this.shuffle = shuffle;
}
@Override
public void actionPerformed(ActionEvent e) {
JToggleButton tBtn = (JToggleButton) e.getSource();
showButtonText(tBtn, i, j);
if( previousI == NO_PREVIOUS || previousJ == NO_PREVIOUS){ //no previous selected btn
previousI = i;
previousJ = j;
return;
}
JToggleButton previous = displayCards[previousI][previousJ]; //reference to previous button clicked
if(match(tBtn, previous)){
matchFound(tBtn, previous);
}else{
matchNotFound(tBtn, previous);
}
}
private void showButtonText(JToggleButton btn, int i, int j) {
btn.setText(shuffle.cards[i][j]);
btn.setEnabled(false);
}
private void resetButton(JToggleButton btn) {
btn.setForeground(Color.BLACK);
btn.setText(HIDE_TEXT);
btn.setSelected(false);
btn.setEnabled(true);
}
private boolean match(JToggleButton btn1, JToggleButton btn2) {
return btn1.getText().equals(btn2.getText());
}
private void matchFound(JToggleButton btn1, JToggleButton btn2) {
System.out.println("Correct!");
btn1.setEnabled(false);
btn2.setEnabled(false);
previousI = NO_PREVIOUS ; previousJ = NO_PREVIOUS;
}
private void matchNotFound(JToggleButton tBtn, JToggleButton previous) {
System.out.println("No match");
resetButton(previous);
previousI = i ; previousJ = j;
}
}
}
class Shuffle {
String[][] cards = {
{"A", "B", "C", "D"},
{"E", "F", "G", "H"},
{"A", "B", "C", "D"},
{"E", "F", "G", "H"}
};
public void random() {
for (int i = 0; i < cards.length; i++) {
for (int j = 0; j < cards[i].length; j++) {
int i1 = (int) (Math.random() * cards.length);
int j1 = (int) (Math.random() * cards[i].length);
String temp = cards[i][j];
cards[i][j] = cards[i1][j1];
cards[i1][j1] = temp;
}
}
}
}