可以在監聽按鍵時使影像在視窗中來回移動。實現此功能需要 Swing 計時器和按鍵綁定的組合。
要實現此目的,您可以按照以下步驟操作:
例如,這是一個實現上述步驟的簡化Java 程式碼片段:
import java.awt.*; import java.awt.event.*; import javax.swing.*; public class MovingImage extends JPanel implements KeyListener { // Set the image's initial position private int x = 100; private int y = 100; public MovingImage() { // Add the KeyListener to the panel addKeyListener(this); // Set the size of the panel setPreferredSize(new Dimension(500, 500)); setBackground(Color.white); } @Override public void paintComponent(Graphics g) { super.paintComponent(g); // Draw the image at the current position g.drawImage(myImage, x, y, null); } @Override public void keyPressed(KeyEvent e) { // Handle keypress events for moving the image int key = e.getKeyCode(); if (key == KeyEvent.VK_LEFT) { x -= 10; } else if (key == KeyEvent.VK_RIGHT) { x += 10; } else if (key == KeyEvent.VK_UP) { y -= 10; } else if (key == KeyEvent.VK_DOWN) { y += 10; } // Repaint the panel to update the image's position repaint(); } // Implement other KeyListener methods (keyReleased and keyTyped) if needed public static void main(String[] args) { JFrame frame = new JFrame("Moving Image"); frame.add(new MovingImage()); frame.pack(); frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setVisible(true); } }
請記住調整按鍵程式碼和圖像根據您的具體要求繪製詳細資訊。透過使用按鍵綁定,您可以指定特定的按鍵來控制影像的移動,例如左、右、上、下。
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