所以基本上我正在尝试用GUI创建一个国际象棋/跳棋程序，该板是由8x8按钮矩阵组成的，我需要当我按下i按钮时按钮监听器会告诉我按下了哪个按钮。 我没有添加按钮列表器，但因为我希望你可能会更好的方式来做到这一点
PS：跳棋板被称为“棋盘” 代码：import java.awt.*;
import java.awt.image.BufferedImage;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.*;
import javax.swing.border.*;
public class BetterGui {
private final JPanel gui = new JPanel(new BorderLayout(3, 3));
public JButton[][] chessBoardSquares = new JButton[8][8];
private JPanel chessBoard;
private final JLabel message = new JLabel(
"Amos is the King");
private static final String COLS = "ABCDEFGH";
BetterGui(Board board) {
updateGui(board);
}
public final void updateGui(Board board) {
// set up the main GUI
gui.setBorder(new EmptyBorder(5, 5, 5, 5));
JToolBar tools = new JToolBar();
tools.setFloatable(false);
gui.add(tools, BorderLayout.PAGE_START);
tools.add(new JButton("New")); // TODO - add functionality!
tools.add(new JButton("Save")); // TODO - add functionality!
tools.add(new JButton("Restore")); // TODO - add functionality!
tools.addSeparator();
tools.add(new JButton("Resign")); // TODO - add functionality!
tools.addSeparator();
tools.add(message);
gui.add(new JLabel("?"), BorderLayout.LINE_START);
chessBoard = new JPanel(new GridLayout(0, 9));
chessBoard.setBorder(new LineBorder(Color.BLACK));
gui.add(chessBoard);
// create the chess board squares
Insets buttonMargin = new Insets(0, 0, 0, 0);
for (int ii = 0; ii < chessBoardSquares.length; ii++) {
for (int jj = 0; jj < chessBoardSquares[ii].length; jj++) {
JButton b = new JButton();
b.setMargin(buttonMargin);
// our chess pieces are 64x64 px in size, so we'll
// 'fill this in' using a transparent icon..
BufferedImage img = null;
try {
if (ii % 2 == jj % 2) {
if (board.GameBoard[ii][jj].ContainingChecker.CheckerType == "red") {
img = ImageIO.read(new File("C:\\Users\\Awesome\\Desktop\\large_blue_circle.png")); // eventually C:\\ImageTest\\pic2.jpg
} else if (board.GameBoard[ii][jj].ContainingChecker.CheckerType == "black") {
img = ImageIO.read(new File("C:\\Users\\Awesome\\Desktop\\chcekrplayer.png")); // eventually C:\\ImageTest\\pic2.jpg
} else {
img = ImageIO.read(new File("C:\\Users\\Awesome\\Desktop\\clearImage.png")); // eventually C:\\ImageTest\\pic2.jpg
}
} else {
img = ImageIO.read(new File("C:\\Users\\Awesome\\Desktop\\clearImage.png")); // eventually C:\\ImageTest\\pic2.jpg
}
} catch (IOException e) {
e.printStackTrace();
}
ImageIcon icon = new ImageIcon(img);
b.setIcon(icon);
if ((jj % 2 == 1 && ii % 2 == 1)
//) {
|| (jj % 2 == 0 && ii % 2 == 0)) {
b.setBackground(Color.WHITE);
} else {
b.setBackground(Color.BLACK);
}
chessBoardSquares[jj][ii] = b;
}
}
//fill the chess board
chessBoard.add(new JLabel(""));
// fill the top row
for (int ii = 0; ii < 8; ii++) {
chessBoard.add(
new JLabel(COLS.substring(ii, ii + 1), SwingConstants.CENTER));
}
// fill the black non-pawn piece row
for (int ii = 0; ii < 8; ii++) {
for (int jj = 0; jj < 8; jj++) {
switch (jj) {
case 0:
chessBoard.add(new JLabel("" + (ii + 1), SwingConstants.CENTER));
default:
chessBoard.add(chessBoardSquares[jj][ii]);
}
}
}
}
public final void initializeGui2() {
// set up the main GUI
gui.setBorder(new EmptyBorder(5, 5, 5, 5));
JToolBar tools = new JToolBar();
tools.setFloatable(false);
gui.add(tools, BorderLayout.PAGE_START);
tools.add(new JButton("New")); // TODO - add functionality!
tools.add(new JButton("Save")); // TODO - add functionality!
tools.add(new JButton("Restore")); // TODO - add functionality!
tools.addSeparator();
tools.add(new JButton("Resign")); // TODO - add functionality!
tools.addSeparator();
tools.add(message);
gui.add(new JLabel("?"), BorderLayout.LINE_START);
chessBoard = new JPanel(new GridLayout(0, 9));
chessBoard.setBorder(new LineBorder(Color.BLACK));
gui.add(chessBoard);
// create the chess board squares
Insets buttonMargin = new Insets(0, 0, 0, 0);
for (int ii = 0; ii < chessBoardSquares.length; ii++) {
for (int jj = 0; jj < chessBoardSquares[ii].length; jj++) {
JButton b = new JButton();
b.setMargin(buttonMargin);
// our chess pieces are 64x64 px in size, so we'll
// 'fill this in' using a transparent icon..
BufferedImage img = null;
try {
if (ii % 2 == jj % 2) {
if (ii < 2) {
img = ImageIO.read(new File("C:\\Users\\Awesome\\Desktop\\large_blue_circle.png")); // eventually C:\\ImageTest\\pic2.jpg
} else if (ii > 4) {
img = ImageIO.read(new File("C:\\Users\\Awesome\\Desktop\\chcekrplayer.png")); // eventually C:\\ImageTest\\pic2.jpg
} else {
img = ImageIO.read(new File("C:\\Users\\Awesome\\Desktop\\clearImage.png")); // eventually C:\\ImageTest\\pic2.jpg
}
} else {
img = ImageIO.read(new File("C:\\Users\\Awesome\\Desktop\\clearImage.png")); // eventually C:\\ImageTest\\pic2.jpg
}
} catch (IOException e) {
e.printStackTrace();
}
ImageIcon icon = new ImageIcon(img);
b.setIcon(icon);
if ((jj % 2 == 1 && ii % 2 == 1)
//) {
|| (jj % 2 == 0 && ii % 2 == 0)) {
b.setBackground(Color.WHITE);
} else {
b.setBackground(Color.BLACK);
}
chessBoardSquares[jj][ii] = b;
}
}
//fill the chess board
chessBoard.add(new JLabel(""));
// fill the top row
for (int ii = 0; ii < 8; ii++) {
chessBoard.add(
new JLabel(COLS.substring(ii, ii + 1), SwingConstants.CENTER));
}
}
public final JComponent getChessBoard() {
return chessBoard;
}
public final JComponent getGui() {
return gui;
}
}
答案 0 :(得分：2)
您只需通过侦听器ActionEvent参数的.getSource()方法获取按下的按钮即可。
如，
public class MyListener implements ActionListener {
@Override
public void actionPerformed(ActionEvent e) {
AbstractButton myBtn = (AbstractButton) e.getSource();
// call whatever methods needed on myBtn
}
}
上面的e是actionPerformed方法的ActionEvent方法参数。
然后调用你需要调用的对象上的任何方法。
支持问题：您将已发布的代码与==进行比较。不要这样做，因为这会比较 references ，而您想要比较String包含的实际文本。请改用.equals(...)方法。
例如，如果我们有一个持有JPanel网格的JPanel（看起来更清洁JButtons），我们可以为每个JPanel单元格添加一个MouseListener，就像动作监听器一样，我们可以得到被按下的组件。
在下面的代码中，我使用了Swing putClientProperty方法和getClientProperty让我的JPanel单元格“知道”它们所在的行和列。尝试一下：
编辑：现在使用可以容纳图标的JLabel：
import java.awt.Color;
import java.awt.Dimension;
import java.awt.Graphics2D;
import java.awt.GridLayout;
import java.awt.RenderingHints;
import java.awt.image.BufferedImage;
import javax.swing.*;
@SuppressWarnings("serial")
public class MyGrid extends JPanel {
public static final String ROW = "row";
public static final String COL = "col";
private static final int SIDES = 8;
private static final int CELL_SZ = 60;
private static final Dimension CELL_DIMENSION = new Dimension(CELL_SZ, CELL_SZ);
private static final Color DARK = Color.GRAY;
private static final int LT = 250;
private static final Color LIGHT = new Color(LT, LT, LT);
private JLabel[][] cells = new JLabel[SIDES][SIDES];
private Icon whiteIcon;
private Icon redIcon;
public MyGrid() {
whiteIcon = createIcon(LIGHT);
redIcon = createIcon(Color.RED);
MyMouse myMouse = new MyMouse();
setLayout(new GridLayout(SIDES, SIDES));
for (int row = 0; row < cells.length; row++) {
for (int col = 0; col < cells[row].length; col++) {
JLabel cell = new JLabel();
cell.setOpaque(true);
cell.setPreferredSize(CELL_DIMENSION);
cell.putClientProperty(ROW, row);
cell.putClientProperty(COL, col);
cell.addMouseListener(myMouse);
Color bg = row % 2 == col % 2 ? LIGHT : DARK;
if (bg.equals(DARK) && row < 3) {
cell.setIcon(redIcon);
} else if (bg.equals(DARK) && row > 4) {
cell.setIcon(whiteIcon);
}
cell.setBackground(bg);
cells[row][col] = cell;
add(cell);
}
}
}
private Icon createIcon(Color color) {
BufferedImage img = new BufferedImage(CELL_SZ, CELL_SZ, BufferedImage.TYPE_INT_ARGB);
Graphics2D g2 = img.createGraphics();
g2.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON);
int gap = 4;
g2.setColor(color);
g2.fillOval(gap, gap, CELL_SZ - 2 * gap, CELL_SZ - 2 * gap);
g2.dispose();
return new ImageIcon(img);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(() -> createAndShowGui());
}
private static void createAndShowGui() {
MyGrid mainPanel = new MyGrid();
JFrame frame = new JFrame("MyGrid");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(mainPanel);
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
}
import java.awt.event.MouseAdapter;
import java.awt.event.MouseEvent;
import javax.swing.JComponent;
public class MyMouse extends MouseAdapter {
@Override
public void mousePressed(MouseEvent e) {
JComponent cell = (JComponent) e.getSource();
if (cell != null) {
Integer row = (Integer) cell.getClientProperty(MyGrid.ROW);
Integer col = (Integer) cell.getClientProperty(MyGrid.COL);
System.out.printf("[%d, %d]%n", row, col);
}
}
}