Question

这是我正在使用的Yahtzee游戏的一部分。我试图将背景设置为项目文件夹中的yahtzee.png文件。我评论了我这样做的尝试，因为它不适合我。有没有更好的方法来设置它？ This is how it looks now. There should be a custom image instead of the grey background.

     ExFrame(int numPlayers)
  { 
      frame = new JFrame();
      frame.setSize(450+150*numPlayers,700);

        frame.setTitle("YAHTZEE!");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        this.numPlayers = numPlayers;
        this.numGridRows = 20;
        this.buttonWidth = 140;
        this.numCreateButLabCalls = 0;
        this.component = new DiceComponent(buttonWidth*2);
        this.cButtons = new JButton[numGridRows];
        this.cButtonsText = new String[numGridRows];
        this.cLabels = new JLabel[numPlayers][numGridRows];
        this.statusLabel = new JLabel("<html>New game has been started!<br>Please select the dice that you wish to hold or click on a scoring button</html>");
        this.score = new YahtzeeScore[numPlayers];

        //populate score array
        for(int k = 0; k < numPlayers; k++)
        {
            score[k] = new YahtzeeScore(cButtons,cLabels, statusLabel, component.getDieArray(), cButtonsText, numGridRows, k);
        }

        statusLabel.setPreferredSize(new Dimension(buttonWidth*2, 100));
        centerPanel = new JPanel(new GridLayout(numGridRows,numPlayers+1)); //columns based on numPlayers

        component.rollDice(true);
        popCenterPanel();
        for(int k = 0; k < numPlayers; k++)
            score[k].reset();
        addListeners();

        frame.setLayout(null);
        frame.add(component);
        frame.add(statusLabel);
        frame.add(centerPanel);
    //  frame.add(new JLabel(new ImageIcon("/YahtzeeAgain/yahtzee.png")));
        Insets insets = frame.getInsets();
        Dimension size = statusLabel.getPreferredSize();
        statusLabel.setBounds(100+ insets.left,insets.top,size.width,size.height);
        size = component.getPreferredSize();
        component.setBounds(insets.left, 150 + insets.top,
                 size.width, size.height);
        size = centerPanel.getPreferredSize();
        centerPanel.setBounds(290 + insets.left, 140 + insets.top,
                 size.width, size.height);
    centerPanel.setBackground(Color.gray);
    frame.add(this);
    frame.setVisible(true); 


    }

Answer 1

最佳方式：

将您的背景JLabel添加到Frame的contentpane（正如您所做），然后对其执行setLayout（null），并将所有其他组件添加到您的后台JLabel

Answer 2

怎么样

frame.setContentPane(new JLabel(new ImageIcon("/YahtzeeAgain/yahtzee.png")));

使用JFrame的背景图像

2 个答案: