无法将3个JPanel添加到主面板 [英] Not able to add 3 JPanels to a main panel

问题描述

我有3个JPanels，我想将它们全部放在一个JPanel中。我使用GridBagLayout作为主面板。但是只添加了一个面板。为什么会这样？

I have 3 JPanels and I want to place them all in one JPanel. I used the GridBagLayout for the main panel. But only one panel is getting added. Why might this be?

    gblayout=new GridBagLayout();
    gbc=new GridBagConstraints();
    panel1Customizer();
    panel2customizer();
    panel3Customizer();
    setLayout(gblayout);
    gbc.fill=GridBagConstraints.HORIZONTAL;
    gbc.anchor=GridBagConstraints.NORTHWEST;
    gbc.weightx=1;
    gbc.weighty=1;
    gbc.gridheight=GridBagConstraints.REMAINDER;
    add(panel1, gbc);
    add(panel2, gbc);
    gbc.gridwidth=GridBagConstraints.REMAINDER;
    add(panel3, gbc);

自定义程序方法是将项目添加到这些面板中的方法。

The customizer methods are ones which add items into these panels.

推荐答案

我不确定，但我认为你需要在你的GridBagLayout中添加一个GridBagConstraints。试试看这个网站，了解如何使用GridBagLayout：
链接

I am not sure but I think you need to add a GridBagConstraints to your GridBagLayout. Try look at this site to get the idea on how to work with GridBagLayout: link

或者只是为您的JFrame使用另一个布局，可能是BorderLayout或GridLayout来正确排列您的面板

Or maybe just use another Layout for your JFrame, maybe BorderLayout or GridLayout to arrange your Panels correctly

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