因此,添加面板时,面板之间的间距(包含JTextAreas
)之间的间距发生了变化,请参阅picture。 :D
第一次按下按钮addTextArea()
时。图片中的状态1->状态2。问题是panel_buttons与新添加的WorkDescription
(JTextArea
)距离不太近。并且当多次按下按钮时,它们之间的间距会改变。
按钮以前有很大的跳跃,但是带有; c.weighty = 0.1 - 0.3
的跳跃较小。
// The panel is placed in the center of a JFrame (BorderLayout)
public CONSTRUCTOR {
JPanel panel = new JPanel(new GridBagLayout());
GridBagConstraints c = new GridBagConstraints();
// ...
c.anchor = GridBagConstraints.NORTHWEST;
c.gridx = 0;
c.gridy = 0;
c.weightx = 1;
c.weighty = 1;
c.gridwidth = 1;
c.gridheight = 1;
// this is how everything looks at (first pic) start.
panel.add(panel_buttons, c); // panel_buttons is at the right place
}
添加新的WorkDescription
,即JTextArea
的方法:
public void addTextArea() {
WorkDescription wd = new WorkDescription(); //WorkDescription extends JPanel
panel.remove(panel_buttons);
c.weighty = 0.25; // I've messed around with the weighty alot.
// 0.2-0.25 makes the panel_buttons do the least amout of 'down-jump'
panel.add(wd, c);
if(c.gridy < 3 ) {
c.gridy ++;
c.weighty = 1;
panel.add(panel_buttons, c);
}
panel.revalidate();
panel.repaint();
}
答案 0 :(得分:0)
我发现最好的解决方案是
从GridBagLayout
切换到GridLayout
。
private JPanel panel_Center = new JPanel(new GridLayout(5,1));
然后,当然,删除所有GridBagConstraints
public void addTextArea() {
WorkDescription wd = new WorkDescription();
panel.remove(panel_buttons);
panel.add(wd);
if(addedWorks < 4 ) {
addedWorks++;
panel.add(panel_buttons);
}
panel.revalidate();
panel.repaint();
}