我正在编写此swing应用程序,并且正在使用BoxLayout格式的多个面板,但是似乎面板之间的空白正在它们之间进行划分,而且看起来确实很丑陋。您如何调整和自定义面板之间有多少空间?抱歉,如果这是转贴;我找不到较旧的帖子。
import java.awt.*;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.StringSelection;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.*;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
class gui extends JFrame implements ActionListener{
JFrame frame = new JFrame("Ark Admin Spawn Commands");
JPanel panel = new JPanel();
JComboBox dinos;
JComboBox corruptedDinos;
public JSlider dinoLevel;
JLabel input;
JLabel dino;
JLabel title;
gui(){
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel mainPanel = new JPanel();
mainPanel.setLayout(new BoxLayout(mainPanel, BoxLayout.Y_AXIS));
JPanel panelOne = new JPanel();
JPanel panelTwo = new JPanel();
JPanel panelThree = new JPanel();
mainPanel.add(panelOne);
mainPanel.add(panelTwo);
mainPanel.add(panelThree);
title = new JLabel("Spawning Dinos");
String[] dinoNames= {"The Island:"};
String[] corruptedDinoNames = {"Extinction:"};
dinos = new JComboBox(dinoNames);
corruptedDinos = new JComboBox(corruptedDinoNames);
dinoLevel = new JSlider(JSlider.HORIZONTAL, 1, 600, 400);
dinoLevel.setMajorTickSpacing(20);
dinoLevel.setPaintTicks(true);
input = new JLabel("Select Level: ");
event e = new event();
dinoLevel.addChangeListener(e);
dinos.addActionListener(this);
corruptedDinos.addActionListener(this);
panelOne.add(title);
panelTwo.add(input);
panelTwo.add(dinoLevel);
panelThree.add(dinos);
panelThree.add(corruptedDinos);
this.getContentPane().add(mainPanel);
this.setTitle("Ark Admin Spawn Commands");
this.setSize(600, 600);
this.setVisible(true);
}
public static void main (String args[]) {
new gui();
}
public class event implements ChangeListener{
@Override
public void stateChanged(ChangeEvent e) {
int value = dinoLevel.getValue();
input.setText("Level: " + value);
}
}
@Override
public void actionPerformed(ActionEvent arg0) {
}
}
但似乎是面板之间的空白被分割了
正确。ABoxLayout
将尝试为所有组件分配额外的空间。
但是,它将尊重每个面板的最大尺寸。
因此,为防止面板高度增加,可以使用如下代码:
JPanel panelOne = new JPanel()
{
@Override
public dimension getMaximumSize()
{
Dimension d = getPreferredSize()
d.width = Integer.MAX_VALUE;
return d;
}
};
或者因为框架的默认布局管理器是BorderLayout
,您可以使用:
//this.getContentPane().add(mainPanel);
add(mainPanel, BorderLayout.PAGE_START); // getContentPane() is not needed
BorderLayout的PAGE_START尊重组件的首选高度。
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