使用GridBagConstraints的怪异布局 [英] Weird layout using GridBagConstraints

问题描述

我有几种方法可以在JPanel中创建自己的组件JButton或JLabel.然后，我有一个单独的方法，将所有这些JPanels和JFrame相加.我还在JPanels上使用gridx和gridy来按我的意愿放置它们.这是:在左侧的lookreply，然后在标题的右上角，并在2X2表中的下方，退出，重新启动，拾取并打个招呼.但是我当前的代码在运行时显示了一个奇怪的，随机的布局.

I have several methods which create their own component, JButton or JLabel in a JPanel. Then I have a separate method which adds all these JPanels the the JFrame. I also use gridx and gridy on the JPanels to position them how I want. This is: lookreply on the left, then top right the title and below in a 2X2 table quit, restart, pickup and hello. However my current code when run displays a weird, random layout.

lookreply在左侧，但在右侧则退出，留一个空格，重新启动，然后全部垂直打招呼.看不到皮卡和标题.我不知道为什么会这样.

The lookreply is on the left, but then to the right is quit, a space, restart then hello all vertical. pickup and title aren't seen. I dont know why this is happening.

请在下面查看我的代码.

Please see my code below.:

public class GUI extends JPanel
{
/**
 * Creation of variables used throughout the GUI Class. 
 */
//JPanel panel = new JPanel(new GridBagLayout());

private static final long serialVersionUID = 1L;

public static void main(String[] args)
{
    GUI g = new GUI();

    g.create();
}

private void create()
{
    JFrame screen = new JFrame("Dungeon of Doom");
    screen.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    screen.setLayout(new GridBagLayout());
    GridBagConstraints c = new GridBagConstraints();

    //set size to full screen. 
    screen.setExtendedState(Frame.MAXIMIZED_BOTH);   

    //Add all JPanes to screen
    screen.add(lookReply(), c);
    c.gridy = 0;
    c.gridx = 0;

    screen.add(title(), c);
    c.gridy = 0;
    c.gridx = 1;
    c.gridwidth = 2;

    screen.add(quit(), c);
    c.gridy = 1;
    c.gridx = 1;

    screen.add(restart(), c);
    c.gridy = 1;
    c.gridx = 2;

    screen.add(pickup(), c);
    c.gridy = 2;
    c.gridx = 1;

    screen.add(hello(), c);
    c.gridy = 2;
    c.gridx = 2;

    screen.setVisible(true);
}

其中一种方法(退出)

private JPanel quit()
{
    JPanel quitPanel = new JPanel(new GridBagLayout());
    GridBagConstraints c = new GridBagConstraints();

    JButton quit = new JButton("QUIT");
    quitPanel.add(quit, c);


    return quitPanel;
}

除标题是一个JLabel之外，其他所有方法几乎都是相同的，并且该表会迭代以在其自己的JPanel中创建JLabel的5x5表.感谢您的帮助！

All the other methods are pretty much the same except the title is a a JLabel and the table iterates to create a 5x5 table of JLabel within its own JPanel. Any help is appreciated!

推荐答案

我已经找到了正在执行的操作. 如代码所示，我是在设置布局之前添加组件的.

I have found what was doing this. As seen in the code I was adding the component before setting the layout.

screen.add(lookReply(), c);
c.gridy = 0;
c.gridx = 0;

应该是

c.gridy = 0;
c.gridx = 0;
screen.add(lookReply(), c);

这篇关于使用GridBagConstraints的怪异布局的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！