我无法让按键事件正常工作，它无法识别按键输入，有人可以帮忙吗？
我有三类播放器，exe和board
这是板级
import java.awt.Color;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Toolkit;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyListener;
import java.awt.event.KeyEvent;
import javax.swing.JPanel;
import javax.swing.Timer;
import java.applet.*;
import java.awt.*;
import java.awt.event.*;
public class Board extends JPanel implements ActionListener{
private Timer timer;
private Player player;
//private Floor
public Board() {
addKeyListener( new TAdapter() );
setFocusable(true);
setBackground(Color.WHITE);
setDoubleBuffered(true);
player = new Player();
//floor = new Floor();
timer = new Timer(5, this);
timer.start();
}
public void paint(Graphics g) {
super.paint(g);
Graphics2D g2d = (Graphics2D)g;
g2d.drawImage(player.getImage(), player.getX(), player.getY(), this);
// g2d.drawImage(floor.getImage(), floor.getX(), floor.getY(), this);
//System.out.println(player.getX() + ", " + player.getY());
Toolkit.getDefaultToolkit().sync();
g.dispose();
}
public void actionPerformed(ActionEvent e) {
// checkPlayerOnGround();
player.move();
repaint();
}
private class TAdapter extends KeyAdapter implements KeyListener{
public void keyTyped(KeyEvent e) {
player.keyReleased(e);
System.out.println("Released");
}
public void keyPressed(KeyEvent e) {
player.keyPressed(e);
System.out.println("Pressed");
}
}
}
这是播放器类
import java.awt.Image;
import java.awt.event.KeyEvent;
import javax.swing.ImageIcon;
import javax.swing.Timer;
import java.util.TimerTask;
public class Player{
private String player = "player.jpg";
private int moveX;
private int moveY;
private int x;
private int y;
private Image image;
private boolean canFall = false;
//private Timer jumpTimer = new Timer();
boolean canJump = true;
public Player() {
ImageIcon playeriImage = new ImageIcon(this.getClass().getResource(player));
image = playeriImage.getImage();
x = 40;
y = 60;
}
public void checkFall() {
if(canFall) {
moveY = -4;
}
}
public void move() {
//checkFall();
x = moveX + x;
y = moveY + y;
}
public int getX() {
return x;
}
public int getY() {
return y;
}
public Image getImage() {
return image;
}
public void keyPressed(KeyEvent e) {
int key = e.getKeyCode();
if (key == KeyEvent.VK_A) {
moveX = -4;
}
if (key == KeyEvent.VK_D) {
moveX = 4;
}
if (key == KeyEvent.VK_W) {
if(canJump)
this.jump();
}
}
public void keyReleased(KeyEvent e) {
int key = e.getKeyCode();
if (key == KeyEvent.VK_A) {
moveX = 0;
}
if (key == KeyEvent.VK_D) {
moveX = 0;
}
}
这是exe类
import javax.swing.JFrame;
public class Exe extends JFrame {
public Exe() {
add(new Board());
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(500, 500);
setLocationRelativeTo(null);
setTitle("TSA Video Game");
setResizable(false);
setVisible(true);
}
public static void main(String[] args) {
new Exe();
}
}
提前致谢