我正在尝试创建一个用于继承JPAMI的步步高游戏和JLayeredPane来为我的跳棋创建一个拖拽区域,但我甚至不能在面板上打印一个简单的矩形。它确实打印了图像,但没有打印JLabel。 这里是我的JPanel类无法看到JPanel中的JLayeredPane中的内容
public class BoardPanel extends JPanel{
private JLayeredPane lp;
private BufferedImage imageBoard;
private final int WIDTH = 1000;
private final int HEIGHT = 800;
private ArrayList<Slot> slotSet1;
private ArrayList<Slot> slotSet2;
private ArrayList<Slot> slotSet3;
private ArrayList<Slot> slotSet4;
private CheckerSet ch1;
public Checker chc;
public BoardPanel(){
initComponents();
}
private void initComponents(){
lp = new JLayeredPane();
setPreferredSize(new java.awt.Dimension(1500, 1000));
//lp.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0)));
lp.setBorder(javax.swing.BorderFactory.createTitledBorder("asdadsaddadsadasdadsa"));
lp.setMaximumSize(new java.awt.Dimension(1124, 904));
lp.setMinimumSize(new java.awt.Dimension(1124, 904));
try {
imageBoard = ImageIO.read(getClass().getResource("/images/board.jpg"));
} catch (IOException e) {
System.out.println("file error");
}
JLabel label = new JLabel();
label.setVerticalAlignment(JLabel.TOP);
label.setHorizontalAlignment(JLabel.CENTER);
label.setOpaque(true);
label.setBackground(Color.BLACK);
label.setForeground(Color.black);
label.setBorder(BorderFactory.createLineBorder(Color.black));
label.setBounds(0, 0, 50, 50);
lp.add(label,JLayeredPane.DEFAULT_LAYER);
}
public void paintComponent(Graphics g){
//g.drawImage(imageBoard,0,0,null);
}
}
而且有主要
public static void main(String[] args){
JFrame f = new JFrame();
//GamePanel gp = new GamePanel();
BoardPanel gp = new BoardPanel();
f.add(gp);
//f.getContentPane().add(gamePanel);
f.setSize(new Dimension(1500, 1000));
f.setVisible(true);
f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
}
我该怎么解决呢?谢谢你们
您的'JLayeredPane'永远不会被添加到任何东西。 – Berger
刚刚添加行添加(lp),我得到了一些东西。我想我需要为LP设置一个布局然后它会没事的。谢谢 –