将一个网格布局分成两部分

Question

我想将填充了按钮的网格布局分成两部分，其中前5个按钮可以进入BorderLayout的北部，最后5个按钮可以进入南部。

    myPanel = new JPanel(new GridLayout(10, 1, 5, 10));
    final JPanel mainPanel = new JPanel(new BorderLayout());

Answer 1

有许多选项，只使用一个面板，您可以更改GridLayout属性以允许5列和2行...

JPanel panel = new JPanel(new GridLayout(2, 10));
for (int index = 0; index < 10; index++) {
    panel.add(new JButton(Integer.toString(index)));
}

或者，你可以使用三个面板，一个用作外部容器，定义行，其他面板定义行

JPanel outer = new JPanel(new GridLayout(2, 1));

JPanel topRow = new JPanel(new GridLayout(1, 5));
for (int index = 0; index < 5; index++) {
    topRow.add(new JButton(Integer.toString(index)));
}
JPanel bottomRow = new JPanel(new GridLayout(1, 5));
for (int index = 5; index < 10; index++) {
    bottomRow.add(new JButton(Integer.toString(index)));
}

outer.add(topRow);
outer.add(bottomRow);

Answer 2

以下代码可以帮助您;）您需要将动作侦听器添加到按钮中。

  final JPanel mainPanel = new JPanel(new BorderLayout());

  JPanel northPanel = new JPanel(new GridLayout(1, 5));

  JButton b1 = new Button("Button 1");
  northPanel.add(b1);

  (...) (Add the other 4 buttons)

  mainPanel.add(southPanel, BorderLayout.NORTH);

  JPanel southPanel = new JPanel(new GridLayout(1, 5));

  JButton b6 = new Button("Button 6");
  southPanel .add(b6);

  (...) (Add the other 4 buttons)

  mainPanel.add(southPanel, BorderLayout.SOUTH);

Answer 3

试试这个：

myPanelNorth = new JPanel(new GridLayout(5, 1, 5, 10));
myPanelSouth = new JPanel(new GridLayout(5, 1, 5, 10));

BorderLayout b = new BorderLayout()
final JPanel mainPanel = new JPanel();

mainPanel.add(myPanelNorth , b.NORTH);
mainPanel.add(myPanelSouth , b.SOUTH);

然后分别将你的按钮添加到北方和南方