创建一个3行4列的jframe。我在尝试做一个记忆游戏，让它与字母匹配。到目前为止，代码是匹配的，字母是随机洗牌的。我想把匹配的两个单词的正方形的颜色改为蓝色。我在网上找不到任何相关信息。
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.GridLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import javax.swing.border.Border;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
import java.awt.Color;
import javax.swing.BorderFactory;
public class matchinggame implements ActionListener {
JPanel jp = new JPanel();
JFrame jf = new JFrame();
String[] matchList = { "dank", "dank", "memes", "memes", "360", "360", "headshot", "headshot", "doge", "doge",
"mlg", "mlg", "pro", "pro" };
String[] shuffledList;
JButton[][] buttons;
boolean flipping = true;
int i = 0;
int cardOne;
int secIndex;
public static void main(String[] args) {
// Schedule a job for the event-dispatching thread
// to create application and display its GUI
javax.swing.SwingUtilities.invokeLater(new Runnable() {
public void run() {
matchinggame app = new matchinggame();
app.makeGUI();
}
});
}
public void dealCards(JPanel panel) {
buttons = new JButton[3][]; // array of buttons used to represent cards
shuffleCards();
for (int i = 0; i < 3 * 4; i++) { // initialize 3 rows with 4 columns
// each
if (i % 4 == 0)
buttons[i / 4] = new JButton[4];
buttons[i / 4][i % 4] = new JButton("choose me"); // show face down
buttons[i / 4][i % 4].addActionListener(this);
panel.add(buttons[i / 4][i % 4]);
}
}
public void shuffleCards() {
List<String> list = Arrays.asList(matchList);
Collections.shuffle(list);
shuffledList = list.toArray(new String[list.size()]);
}
public void updateMatchList(String a, String b, boolean add) {
String[] courseList;
int oldLen = matchList.length;
if (add) { // add the new item to the list
courseList = new String[oldLen + 2];
courseList[0] = new String(a); // new first course
courseList[1] = new String(b); // new first course num
for (int item = 2; item <= oldLen; item += 2) {
courseList[item] = matchList[item - 2];
courseList[item + 1] = matchList[item - 1];
}
matchList = courseList;
} else { // delete matching item
courseList = new String[oldLen - 2];
int matchItem = 0;
for (int item = 0; item <= oldLen; item += 2) {
if (a != matchList[item]) { // no match so OK to copy over
courseList[item] = matchList[matchItem];
courseList[item + 1] = matchList[matchItem + 1];
matchItem += 2;
}
}
matchList = courseList;
}
}
/**
* Creates the JFrame and its UI components.
*/
public void makeGUI() {
JFrame frame = new JFrame("matchinggame");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
jp = new JPanel(new GridLayout(3, 4));
jp.setPreferredSize(new Dimension(500, 300));
dealCards(jp);
frame.getContentPane().setLayout(new BorderLayout());
frame.getContentPane().add(jp, BorderLayout.CENTER);
// Display the window.
frame.pack();
frame.setSize(500, 500);
frame.setVisible(true);
jp.setBorder(BorderFactory.createLineBorder(Color.RED,16));
}
public void actionPerformed(ActionEvent e) {
int r, c;
if (i < 2) { // find the card clicked on and flip it over
for (r = 0; r < 3; r++) {
for (c = 0; c < 4; c++) {
// if the card is not face down (showing "choose me") don't
// flip it
if ((e.getSource() == buttons[r][c])
&& buttons[r][c].getText().equals("choose me")) {
// flip the card face-up to show text from matchList
// looks up text based upon indexes
buttons[r][c].setText(shuffledList[(r * 4 + c)]);
i++; // increment number of cards flipped
if (i == 1)
cardOne = (r * 4 + c); // save which pattern was
// shown first
else
secIndex = (r * 4 + c); // save the pattern
// shown second
return;
}
}
}
} else { // 2 cards already flipped, put all cards face down
for (r = 0; r < 3; r++) {
for (c = 0; c < 4; c++) {
// first and second cards flipped
if (shuffledList[cardOne].equals(shuffledList[secIndex])) {
// match
// don't change the face down cards
if (!buttons[r][c].getText().equals("choose me"))
// once matched, show the removed pattern
buttons[r][c].setText("dankified");
} else if ((!buttons[r][c].getText().equals("dankified"))
&& (!buttons[r][c].getText().equals("choose me"))) {
// if 2 face up cards didn't match, flip face down again
buttons[r][c].setText("choose me");
}
}
i = 0; // new turn, no cards flipped face up
}
}
}
}
要更改匹配单元格的颜色，可以添加setBackground():
if (!buttons[r][c].getText().equals("choose me")){
buttons[r][c].setText("dankified");
buttons[r][c].setBackground(Color.BLUE); //added line!
}
在上面的情况下，它应该改变按钮的颜色为蓝色。在我看来，加上:
也是一个很好的解决办法。buttons[r][c].setEnabled(false);
下面的setBackground()语句。这样，已经匹配的单元格将被停用(您不能再单击它)。
更重要的是，你有12个单元格/按钮，和14个单词