java - 我的数组中的位置 [1] 无法注册

Question

我正在尝试使用空格键和 输出字母表。使用循环创建按钮到虚拟键盘中。但是，“w”按钮不会显示，我不知道为什么。所有其他按钮都会显示。

我的代码摘录如下所示。

String[] chars =
{"q","w","e","r","t","y","u","i","o","p","a","s","d","f","g","h","j","k","l",".","z","x","c","v","b","n","m"," "};

while (x<28)
            {
                JButton button = new JButton(chars[z]);
                pane.add(button, gBC);
                button.addActionListener(this);
                button.setActionCommand(chars[z]);
                gBC.gridx = z%10;
                gBC.gridy = z/10;
                x ++;
                z ++;
            }

            JButton space = new JButton();
            gBC.gridx = 0;
            gBC.gridy = 4;
            gBC.gridwidth = 10;
            pane.add(space, gBC);

提前非常感谢!

Answer 1

根据我在本地所做的测试，你应该移动。

gBC.gridx = z%10;
gBC.gridy = z/10;

到循环的开始。这给了我想要的结果。 你总是能一次性掌握定位。 您基本上可以使用前一个元素的值来计算下一个元素的位置。

while (x < 28) {
    gBC.gridx = z % 10;
    gBC.gridy = z / 10;
    JButton button = new JButton(chars[z]);
    pane.add(button, gBC);
    button.addActionListener(this);
    button.setActionCommand(chars[z]);
    x++;
    z++;
}