使用gridbaglayout定位在javax swing中

I've been self teaching myself swing for a few days for a project and right now I'm trying to figure out how to position components with a grid bag layout. I got most of it except a few small issues. If anyone could help, it would be very appreciated. I've tried this so many different ways D:

我一直在自学为自己的项目摆动几天,现在我正在试图弄清楚如何用网格袋布局来定位组件。除了一些小问题,我得到了大部分内容。如果有人可以提供帮助,我们将非常感激。我尝试过这么多不同的方式D:

    ...
    titlePanel.setLayout(new GridBagLayout());
    titlePanel.setBackground(BLUE);

    header = new JLabel ("Gradebook");
    header.setLocation(200,400);
    header.setFont(new Font("Serif", Font.BOLD, 50));
    gbc.gridx = 0;
    gbc.gridy = 0;
    gbc.anchor = GridBagConstraints.CENTER;
    titlePanel.add(header,gbc);

    date = new Date();
    currentDate = new JLabel (fmt.format(date));
    currentDate.setFont(new Font("Serif", Font.PLAIN, 14));
    ActionListener updateTime = new ActionListener() {
        public void actionPerformed (ActionEvent e) {
            date = new Date();
            currentDate.setText(fmt.format(date));
        }
    };
    Timer timer = new Timer (1000, updateTime);
    timer.start();
    gbc.gridx = 0;
    gbc.gridy = 1;
    gbc.anchor = GridBagConstraints.CENTER;
    titlePanel.add(currentDate, gbc);

    JLabel userName = new JLabel ("Username:  ");
    gbc.gridx = 0;
    gbc.gridy = 2;
    gbc.anchor = GridBagConstraints.EAST;
    titlePanel.add(userName, gbc);

    JTextField username = new JTextField (10);
    gbc.gridx = 1;
    gbc.gridy = 2;
    gbc.anchor = GridBagConstraints.WEST;
    titlePanel.add(username, gbc);

    JLabel password = new JLabel ("Password:  ");
    gbc.gridx = 0;
    gbc.gridy = 3;
    gbc.anchor = GridBagConstraints.EAST;
    titlePanel.add(password, gbc);

    JPasswordField Password = new JPasswordField (10);
    gbc.gridx = 1;
    gbc.gridy = 3;
    gbc.anchor = GridBagConstraints.WEST;
    titlePanel.add(Password, gbc);
    JButton login = new JButton ("Login");
    gbc.gridx = 0;
    gbc.gridy = 4;
    gbc.anchor = GridBagConstraints.CENTER;
    titlePanel.add(login, gbc);

    JButton newAccount = new JButton ("Create New Account");
    gbc.gridx = 0;
    gbc.gridy = 5;
    gbc.anchor = GridBagConstraints.CENTER;
    titlePanel.add(newAccount, gbc);
    mainFrame.add(titlePanel);

So when I run the code for the login screen, it comes up with this

因此,当我运行登录屏幕的代码时,它就会出现这个问题

I need a way to center the username and password so they match up with everything else and also add some blank vertical space between the 2 buttons at the bottom. Sorry if this is a dumb question :|

我需要一种方法来使用户名和密码居中,以便它们与其他所有内容匹配,并在底部的2个按钮之间添加一些空白垂直空间。对不起,如果这是一个愚蠢的问题:|

1 个解决方案

#1

Your username/password contains two components in two different columns. So if you want all the components centered you have two options:

您的用户名/密码包含两个不同列中的两个组件。因此,如果您希望所有组件都居中,那么您有两个选择:

Create a separate panel for each of the label/text field components. Then you can add the panel as a single component which means it will be placed in the first column with all the other components.

为每个标签/文本字段组件创建单独的面板。然后,您可以将面板添加为单个组件,这意味着它将与所有其他组件一起放置在第一列中。
Have all the other component "span" two columns. So now they will take up the same width as the label/text field components. In this case you will need to specify the gridWidth constraint.

让所有其他组件“跨越”两列。所以现在它们将占用与标签/文本字段组件相同的宽度。在这种情况下,您需要指定gridWidth约束。

Read the section from the Swing tutorial on How to Use GridBagLayout for more information on the various constraints used by GridBagLayout.

阅读有关如何使用GridBagLayout的Swing教程中的部分,以获取有关GridBagLayout使用的各种约束的更多信息。

also add some blank vertical space between the 2 buttons at the bottom

还可以在底部的2个按钮之间添加一些空白垂直空间

Again, look at the constraints. You could use the insets constraint.

再看一下约束。您可以使用insets约束。

#1