我正在使用Java swing LayoutManager GridBagLayout,并且遇到了这个问题.我想要这样的布局
行政协调会
BB
但是得到这样的布局
行政协调会
乙
尽管B的网格宽度为2,其中A的网格宽度为1,但A和B占用的列数相同.我不认为A,B和C之间的列会消失得很小,因为C从第1列开始.如果C的gridwidth是1而不是2,则不会发生.我对输出感到困惑.
为什么会这样/我该如何解决?
JFrame test = new JFrame();
test.setSize(800,800);
test.setLayout(new GridBagLayout());
test.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
GridBagConstraints c;
c = new GridBagConstraints();
c.gridx=0;
c.gridy=0;
c.fill = GridBagConstraints.BOTH;
c.weightx = 1;
c.weighty = 1;
test.add(new JButton("A"), c);
c = new GridBagConstraints();
c.gridx=0;
c.gridy=2;
c.gridwidth=2;
c.fill = GridBagConstraints.BOTH;
c.weightx = 1;
c.weighty = 1;
test.add(new JButton("B"), c);
c = new GridBagConstraints();
c.gridx=1;
c.gridy=0;
c.gridwidth=2;
c.gridheight=2;
c.fill = GridBagConstraints.BOTH;
c.weightx = 2;
c.weighty = 2;
test.add(new JButton("C"), c);
test.setVisible(true);
解决方法:
我知道您的感觉…似乎GridBagLayout在未由1×1组件填充时将列的宽度减小为0.我不知道以下方法是否是最有效的解决方案,但是它可以工作(通过向“第1列和第2列”添加两个虚拟JPanel):
JFrame test = new JFrame();
test.setSize(800,800);
test.setLayout(new GridBagLayout());
test.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
GridBagConstraints c;
c = new GridBagConstraints();
c.gridx=0;
c.gridy=0;
c.fill = GridBagConstraints.BOTH;
c.weightx = 1;
c.weighty = 1;
test.add(new JButton("A"), c);
c = new GridBagConstraints();
c.gridx=0;
c.gridy=1;
c.gridwidth=2;
c.fill = GridBagConstraints.BOTH;
c.weightx = 1;
c.weighty = 1;
test.add(new JButton("B"), c);
c = new GridBagConstraints();
c.gridx=1;
c.gridy=0;
c.gridwidth=2;
c.gridheight=1;
c.fill = GridBagConstraints.BOTH;
c.weightx = 2;
c.weighty = 2;
test.add(new JButton("C"), c);
c = new GridBagConstraints();
c.gridx=1;
c.gridy=2;
c.gridwidth=1;
c.gridheight=0;
c.fill = GridBagConstraints.HORIZONTAL;
c.weightx = 1;
c.weighty = 0;
test.add(new JPanel(), c);
c = new GridBagConstraints();
c.gridx=2;
c.gridy=3;
c.gridwidth=1;
c.gridheight=0;
c.fill = GridBagConstraints.HORIZONTAL;
c.weightx = 1;
c.weighty = 0;
test.add(new JPanel(), c);
test.setVisible(true);
标签:gridbaglayout,swing,java 来源: https://codeday.me/bug/20191119/2039290.html
本站声明: 1. iCode9 技术分享网(下文简称本站)提供的所有内容,仅供技术学习、探讨和分享; 2. 关于本站的所有留言、评论、转载及引用,纯属内容发起人的个人观点,与本站观点和立场无关; 3. 关于本站的所有言论和文字,纯属内容发起人的个人观点,与本站观点和立场无关; 4. 本站文章均是网友提供,不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属;如您发现该文章侵犯了您的权益,可联系我们第一时间进行删除; 5. 本站为非盈利性的个人网站,所有内容不会用来进行牟利,也不会利用任何形式的广告来间接获益,纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。