Java JDialog-“;换行“;在组件之间
我有一个JDialog,看起来像这样:Java JDialog-“;换行“;在组件之间,java,swing,layout,jpanel,jdialog,Java,Swing,Layout,Jpanel,Jdialog,我有一个JDialog,看起来像这样: JDialog myDialog = new JDialog(); myDialog.setLocationRelativeTo(parent); // parent is a JPanel. // I want the Dialog to appear in the middle of the parent JPanel. myDialog.setModal(true); myDialog.setLayout(new FlowLayout());
JDialog myDialog = new JDialog();
myDialog.setLocationRelativeTo(parent);
// parent is a JPanel.
// I want the Dialog to appear in the middle of the parent JPanel.
myDialog.setModal(true);
myDialog.setLayout(new FlowLayout());
myDialog.add(new JLabel("my text", SwingConstants.CENTER));
myDialog.add(new JButton("button 1"));
myDialog.add(new JButton("button 2"));
myDialog.pack();
myDialog.setVisible(true);
结果是一个对话框,其中JLabel和jbutton相邻显示
1) 在JLabel
之后进行“换行”最方便的方法是什么,以便JButton
显示在JLabel
下方,而不使用setSize()
?我希望自动确定尺寸,以便部件完全适合,就像pack()
所做的那样
2) 当我设置自定义大小时,对话框会出现在我想要的地方:parent
和myDialog
的中间部分匹配。但是,如果改用pack()
,则myDialog
的左上角位于父对话框的中间。什么是最好的方法,使中锋匹配呢
pack()
之后调用setLocationRelativeTo(父项)
。渲染后需要定位窗口import java.awt.Dimension;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.BorderLayout;
import java.awt.Dialog.ModalityType;
import java.awt.event.ActionEvent;
import javax.swing.*;
@SuppressWarnings("serial")
public class SimpleGuiPanel extends JPanel {
private static final String TITLE = "This is my Dialog Title";
public SimpleGuiPanel() {
JLabel titleLabel = new JLabel(TITLE, SwingConstants.CENTER);
titleLabel.setFont(titleLabel.getFont().deriveFont(Font.BOLD, 16f));
JPanel buttonPanel = new JPanel(new GridLayout(1, 0, 5, 5));
buttonPanel.add(new JButton("Button 1"));
buttonPanel.add(new JButton("Button 2"));
setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
setLayout(new BorderLayout(5, 5));
add(titleLabel, BorderLayout.PAGE_START);
add(buttonPanel, BorderLayout.CENTER);
}
private static void createAndShowGui() {
JPanel mainFramePanel = new JPanel();
mainFramePanel.setPreferredSize(new Dimension(500, 400));
final JFrame mainFrame = new JFrame("Main Frame");
mainFrame.add(mainFramePanel);
mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
SimpleGuiPanel simpleGuiPanel = new SimpleGuiPanel();
final JDialog myDialog = new JDialog(mainFrame, "Dialog", ModalityType.APPLICATION_MODAL);
myDialog.getContentPane().add(simpleGuiPanel);
myDialog.pack();
mainFramePanel.add(new JButton(new AbstractAction("Show Dialog") {
@Override
public void actionPerformed(ActionEvent e) {
myDialog.setLocationRelativeTo(mainFrame);
myDialog.setVisible(true);
}
}));
mainFrame.pack();
mainFrame.setLocationRelativeTo(null);
mainFrame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(() -> createAndShowGui());
}
}
pack()
之后调用setLocationRelativeTo(父项)
。渲染后需要定位窗口import java.awt.Dimension;
import java.awt.Font;
import java.awt.GridLayout;
import java.awt.BorderLayout;
import java.awt.Dialog.ModalityType;
import java.awt.event.ActionEvent;
import javax.swing.*;
@SuppressWarnings("serial")
public class SimpleGuiPanel extends JPanel {
private static final String TITLE = "This is my Dialog Title";
public SimpleGuiPanel() {
JLabel titleLabel = new JLabel(TITLE, SwingConstants.CENTER);
titleLabel.setFont(titleLabel.getFont().deriveFont(Font.BOLD, 16f));
JPanel buttonPanel = new JPanel(new GridLayout(1, 0, 5, 5));
buttonPanel.add(new JButton("Button 1"));
buttonPanel.add(new JButton("Button 2"));
setBorder(BorderFactory.createEmptyBorder(5, 5, 5, 5));
setLayout(new BorderLayout(5, 5));
add(titleLabel, BorderLayout.PAGE_START);
add(buttonPanel, BorderLayout.CENTER);
}
private static void createAndShowGui() {
JPanel mainFramePanel = new JPanel();
mainFramePanel.setPreferredSize(new Dimension(500, 400));
final JFrame mainFrame = new JFrame("Main Frame");
mainFrame.add(mainFramePanel);
mainFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
SimpleGuiPanel simpleGuiPanel = new SimpleGuiPanel();
final JDialog myDialog = new JDialog(mainFrame, "Dialog", ModalityType.APPLICATION_MODAL);
myDialog.getContentPane().add(simpleGuiPanel);
myDialog.pack();
mainFramePanel.add(new JButton(new AbstractAction("Show Dialog") {
@Override
public void actionPerformed(ActionEvent e) {
myDialog.setLocationRelativeTo(mainFrame);
myDialog.setVisible(true);
}
}));
mainFrame.pack();
mainFrame.setLocationRelativeTo(null);
mainFrame.setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(() -> createAndShowGui());
}
}
使用多个嵌套JPanel,每个都使用自己的布局管理器。调用
pack()
(有意义,否?)后调用setLocationRelativeTo(父项)
。使用多个嵌套JPanel,每个都使用自己的布局管理器。调用pack()
(有意义,否?)后调用setLocationRelativeTo(父项)
。非常感谢,这正是我所需要的:)因为我对这类东西还不熟悉,我需要仔细阅读你的代码,并确保我理解所有代码,再加上一点文档浏览/谷歌搜索。非常感谢,这正是我所需要的:)因为我对这类东西还不熟悉,我需要仔细阅读您的代码,并确保我理解所有代码,同时浏览/谷歌一些文档。