一個按鈕

Question

擺動轉換圖像我有2類定義是這樣的：

public class Cartes extends JPanel 
{ 
    private BufferedImage image; 
    protected int tabC[] = new int[9]; 
    public int randomC ; 

    public Cartes() 
    { 

    .......... 

    BufferedImage myPicture = null; 

    try { 
     myPicture = ImageIO.read(new File("images/"+randomC+".png")); 
    } 
    catch (IOException e) 
    { 
     // TODO Auto-generated catch block 
     e.printStackTrace(); 
    } 

    JLabel picLabel = new JLabel(new ImageIcon(myPicture)); 
    add(picLabel); 
    } 

    public void paintComponent(Graphics g) 
    { 
    super.paintComponent(g); 
    g.drawImage(image, 0, 0, null); // 
    } 
} 

注：randomC是在構造函數中讓我在隨機圖像選擇生成一個整數。

和

public class VueGeo extends JFrame 
{ 
    public Cartes pan = new Cartes(); 
    private JButton bouton = new JButton("Change"); 

    public VueGeo() 
    { 

    ... 

    container.add(pan, BorderLayout.CENTER); 

    bouton.addActionListener(new BoutonListener()); 

    ... 

    this.setContentPane(container); 

    this.setVisible(true); 

    } 

    class BoutonListener implements ActionListener 
    { 
    public void actionPerformed(ActionEvent arg0) { 
     ???????? 
    } 
    } 
} 

的問題是我不知道要放什麼actionPerformed爲了讓我改變形象每當我上的更改單擊。有人有想法嗎？

Answer 1

請setter方法中的Cartes：

public void setImage(BufferedImage i) 
{ image = i; } 

然後，在的actionPerformed，

cartes.setImage((whatever image you would like)); 
cartes.repaint();