1

我有一组 30 个按钮 []。我有一个变量 buttonClicked。当我按下按钮时，如何获取索引并将索引号存储在 buttonClicked 中？

谢谢 ：）

JButton [] buttons = new JButton[30]; 


        for(int i = 1; i <= 30; i++)
        {       
            int btnNumber = (i > 10 && i <= 20) ? (31 - i) : i;

            System.out.printf("i = %d, btnNumber = %d%n", i, btnNumber);
            buttons[btnNumber - 1] = new JButton("label " + btnNumber);
            //buttons[btnNumber - 1].setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
            buttons[btnNumber - 1].setBorder(BorderFactory.createEtchedBorder());
            buttons[btnNumber - 1].setOpaque(true);
            buttons[btnNumber - 1].setBackground(Color.white);

            //Puts the player 1 piece on button 1,3,5,7,9 and player 2 piece on button 2,4,6,8,10 
            if ((btnNumber - 1) < 10) 
            { 
                if (((btnNumber - 1) % 2) == 0) 
                { 
                    buttons[btnNumber - 1].setIcon(piece1); 
                } 
                else 
                { 
                    buttons[btnNumber - 1].setIcon(piece2); 
                } 
            } 
            centerPanel.add(buttons[btnNumber - 1]); 
        }

//以下是我正在尝试做的事情，我知道这是不正确的。

public void move()
{
Move = dice.getDiceResult();
int buttonClicked = 0;

if(playerOneTurn =true)
{
buttonclicked + diceResult();
}

//修改

public class MyActionListener implements ActionListener {
Dice dice;
private boolean playerOneTurn = true;
private boolean playerTwoTurn = false;
    @Override
    public void actionPerformed(ActionEvent e) 
{
    String num = e.getActionCommand();
    int index = Integer.parseInt(num);
    int move = dice.getDiceResult();
    int positionLanding = 0;

    if(playerOneTurn = true)
    {
        positionLanding = index + move;
        positionLanding.setIcon("piece1");//how can I set the image Icon to this position?
    }

}
}
4

4 回答 4

5

1)放置客户端属性

buttons[i][j].putClientProperty("column", i);
buttons[i][j].putClientProperty("row", j);
buttons[i][j].addActionListener(new MyActionListener());

和getClientProperty

public class MyActionListener implements ActionListener {

@Override
public void actionPerformed(ActionEvent e) {
    JButton btn = (JButton) e.getSource();
    System.out.println("clicked column " + btn.getClientProperty("column")
            + ", row " + btn.getClientProperty("row"));
}

2)动作命令

于 2012-05-02T14:55:05.933 回答
2

最漂亮的方法是使用 Component.setName。然后你甚至不需要用你的组件维护变量 - 你可以直接使用名称

于 2012-05-02T14:48:08.430 回答
2

您可以在 中找到该按钮ActionEvent.getSource()。要找到索引，只需遍历数组，寻找那个特定的按钮。

于 2012-05-02T14:46:28.840 回答
2

我更喜欢 aioobe 建议的策略，但这是另一种方式。

buttons[btnNumber - 1] = new JButton("label " + btnNumber);
buttons[btnNumber - 1].setActionCommand("" + btnNumber);
// ...

// ...later.. in the actionPerformed() method
String num = actionEvent.getActionCommand();
int index = Integer.parseInt(num);
// ..proceed..
于 2012-05-02T14:55:52.000 回答