Question

我有关于我的pokerodds计算器的布局问题。我JFrame存在一个带有网格布局的顶部面板和一个带有边框布局的中心面板。此中心面板添加了JLabel BorderLayout.CENTER中的图片和JPanel中的BorderLayout.NORTH。 BorderLayout.NORTH中的面板有两个JButton。现在我想把一个JButton放在JLabel（可以推送）之上，但我不能centerPanel.add(boardCard1.BorderLayout.CENTER);，因为我已经为JLabel做了这个。如何解决这个问题并将Cards放在桌子的中央？我只在代码段中包含了aceClubs卡，以提供更好的可读性。

public class OddsCalculator extends JFrame{

JPanel topPanel;
JLabel tablePicture;
JPanel centerPanel;
//ImagePanel panel = new ImagePanel(new ImageIcon(this.getClass().getResource("/images/pokertable.png")).getImage());
JPanel centerPanelNorth;

Card aceClubs;

Card playerOneCardOne;
Card playerOneCardTwo;
Card playerTwoCardOne;
Card playerTwoCardTwo;
Card playerCardSpotTarget;
Card playerCardSpotSender;

Player player1=new Player();
Player player2=new Player();

Card boardCard1=new Card();
Card boardCard2=new Card();
Card boardCard3=new Card();
Card boardCard4=new Card();

Board board=new Board();



public OddsCalculator(){
    initUI();
}


public void initUI() {
   //cardsPanel=new JPanel(new GridLayout(4,13,0,0));
   setLayout(new BorderLayout());
   topPanel = new JPanel(new GridLayout(4,13,0,0)); 
   centerPanel=new JPanel(new BorderLayout()); 
   tablePicture = new JLabel(new ImageIcon(this.getClass().getResource(Constants.POKERTABLE_ICON)));
   centerPanelNorth=new JPanel();

   aceClubs=new Card();

   playerOneCardOne=new Card();
   playerOneCardTwo=new Card();
   playerTwoCardOne=new Card();
   playerTwoCardTwo=new Card();

   boardCard1=new Card();
   boardCard2=new Card();
   boardCard3=new Card();

   board=new Board();

   //setLayout(new FlowLayout(FlowLayout.LEFT));

   topPanel.setPreferredSize(new Dimension(1200,450));//was 1000/600

   getContentPane().add(topPanel,BorderLayout.NORTH);

   //setSize(1000,1600);
   setDefaultCloseOperation(EXIT_ON_CLOSE);


   aceClubs.suit=Constants.CARD_SUIT_CLUBS;
   aceClubs.kind=Constants.CARD_KIND_ACE;
   aceClubs.iconPath=Constants.ACE_CLUBS_ICON;

   aceClubs.setIcon(new javax.swing.ImageIcon(this.getClass().getResource(aceClubs.iconPath)));
   aceClubs.setBorder(null);
   aceClubs.setContentAreaFilled(false);
   aceClubs.addMouseListener(new java.awt.event.MouseAdapter() {
        public void mouseClicked(java.awt.event.MouseEvent evt) {
            MouseClicked(evt);
        }
    });
   topPanel.add(aceClubs,BorderLayout.PAGE_START);


   getContentPane().add(centerPanel,BorderLayout.CENTER); //was centerpanel


     //PLAYER 1 CARD SPOTS
   playerOneCardOne.iconPath=Constants.CARD_BACKSIDE;
   playerOneCardOne.setIcon(new javax.swing.ImageIcon(this.getClass().getResource(playerOneCardOne.iconPath)));
   playerOneCardOne.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0), 5));
   playerOneCardOne.setBorderPainted(false);
   playerOneCardOne.setContentAreaFilled(false);
   playerOneCardOne.addMouseListener(new java.awt.event.MouseAdapter() {
        public void mouseClicked(java.awt.event.MouseEvent evt) {
            PlayerOneMouseClicked(evt);
        }
    });
   //centerPanel.add(playerOneCardOne,BorderLayout.WEST); //was centerpanel

   playerOneCardTwo.iconPath=Constants.CARD_BACKSIDE;
   playerOneCardTwo.setIcon(new javax.swing.ImageIcon(this.getClass().getResource(playerOneCardTwo.iconPath)));
   playerOneCardTwo.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0), 5));
   playerOneCardTwo.setBorderPainted(false);
   playerOneCardTwo.setContentAreaFilled(false);
   playerOneCardTwo.addMouseListener(new java.awt.event.MouseAdapter() {
        public void mouseClicked(java.awt.event.MouseEvent evt) {
            PlayerOneMouseClicked(evt);
        }
    });
   //centerPanel.add(playerOneCardTwo,BorderLayout.EAST);


   //BOARD CARD SPOTS
   boardCard1.iconPath=Constants.CARD_BACKSIDE;
   boardCard1.setIcon(new javax.swing.ImageIcon(this.getClass().getResource(boardCard1.iconPath)));
   boardCard1.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0), 5));
   boardCard1.setBorderPainted(false);
   boardCard1.setContentAreaFilled(false);
   boardCard1.addMouseListener(new java.awt.event.MouseAdapter() {
        public void mouseClicked(java.awt.event.MouseEvent evt) {
            PlayerOneMouseClicked(evt);
        }
    });
   boardCard1.boardPosition=1;
  // centerPanel.add(boardCard1);

   boardCard2.iconPath=Constants.CARD_BACKSIDE;
   boardCard2.setIcon(new javax.swing.ImageIcon(this.getClass().getResource(boardCard2.iconPath)));
   boardCard2.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0), 5));
   boardCard2.setBorderPainted(false);
   boardCard2.setContentAreaFilled(false);
   boardCard2.addMouseListener(new java.awt.event.MouseAdapter() {
        public void mouseClicked(java.awt.event.MouseEvent evt) {
            PlayerOneMouseClicked(evt);
        }
    });
   //centerPanel.add(boardCard1,SwingConstants.CENTER);
   boardCard2.boardPosition=2;
   //centerPanel.add(boardCard2);

   boardCard3.iconPath=Constants.CARD_BACKSIDE;
   boardCard3.setIcon(new javax.swing.ImageIcon(this.getClass().getResource(boardCard3.iconPath)));
   boardCard3.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0), 5));
   boardCard3.setBorderPainted(false);
   boardCard3.setContentAreaFilled(false);
   boardCard3.addMouseListener(new java.awt.event.MouseAdapter() {
        public void mouseClicked(java.awt.event.MouseEvent evt) {
            PlayerOneMouseClicked(evt);
        }
    });
   //centerPanel.add(boardCard1);
   boardCard3.boardPosition=3;
   //centerPanel.add(boardCard3);

   boardCard4.iconPath=Constants.CARD_BACKSIDE;
   boardCard4.setIcon(new javax.swing.ImageIcon(this.getClass().getResource(boardCard4.iconPath)));
   boardCard4.setBorder(javax.swing.BorderFactory.createLineBorder(new java.awt.Color(0, 0, 0), 5));
   boardCard4.setBorderPainted(false);
   boardCard4.setContentAreaFilled(false);
   boardCard4.addMouseListener(new java.awt.event.MouseAdapter() {
        public void mouseClicked(java.awt.event.MouseEvent evt) {
            PlayerOneMouseClicked(evt);
        }
    });
   //centerPanel.add(boardCard1,SwingConstants.CENTER);
   //boardCard4.boardPosition=4      
   //centerPanel.add(boardCard4);

   centerPanel.add(tablePicture,BorderLayout.CENTER); //TABLE
   centerPanel.add(centerPanelNorth,BorderLayout.NORTH);
   centerPanelNorth.add(playerOneCardOne);
   centerPanelNorth.add(playerOneCardTwo);
   //How to add for example boardCard1 on top of the table?

}

 private void MouseClicked(java.awt.event.MouseEvent evt)    {                              

     //JButton b=(JButton)evt.getSource();
     playerCardSpotSender=(Card)evt.getSource();
     System.out.println(playerCardSpotSender.suit+" "+playerCardSpotSender.kind);

     if (playerCardSpotTarget != null && playerCardSpotTarget.isBorderPainted()) {
         playerCardSpotSender.setLocation(playerCardSpotTarget.getLocation());
         System.out.println(playerCardSpotTarget.getLocation());

     }

}   

private void PlayerOneMouseClicked(java.awt.event.MouseEvent evt){
     //JButton b=(JButton)evt.getSource();
     playerCardSpotTarget=(Card)evt.getSource();

    if(playerCardSpotTarget.isBorderPainted()){
        playerCardSpotTarget.setBorderPainted(false);
    }
    else{
        playerCardSpotTarget.setBorderPainted(true);
    }

}

public static void main(String[] args) {
  OddsCalculator oc=new OddsCalculator();
  oc.setVisible(true);
  oc.pack();

  }
}

Card.java

public class Card extends JButton{
int suit;
int kind;
boolean known;
String iconPath;
Integer boardPosition;
}

目前的布局：

enter image description here

**编辑：** 如何使用OverlayLayout将按钮置于中心位置？

Answer 1

首先，你的问题太复杂，代码太多了。您的问题是在图像顶部显示一个按钮。因此，创建一个带有图像的框架，并为图像添加一个按钮。它应该需要大约20行代码来创建一个执行此操作的简单程序。然后，一旦您了解了如何执行此操作的基本概念，您就可以将更改添加到实际程序中。

您发布的所有其他代码与问题无关，完全没必要。当您提出问题时，请学习简化您的问题。

现在我想把一个JButton放在JLabel（可扩展的）之上，但是我不能做中心事件（boardCard1.BorderLayout.CENTER）;因为我已经为JLabel做了这个。

所以你将按钮添加到标签：

label.setLayout( new GridBagLayout() );
label.add(button, new GridBagConstraints());

只要您要显示的组件小于标签上图像的大小，组件就会在图像中居中。

JButton在JLabel之上

1 个答案: