[英]GUI Layout with swing components JAVA
这就是我想要实现的
我使用了网格布局,这就是
我的代码就行了(如果需要,不是完整的代码可以提供一个)。
components.setLayout(new GridLayout(4,0));
components.setBorder(BorderFactory.createTitledBorder("Personal Data"));
//Lable to display
name.setText("Resident Name");
roomNo.setText("Room Number");
age.setText("Age");
gender.setText("Gender");
careLvl.setText("Care Level");
components.add(name);
components.add(textFieldForName);
components.add(roomNo);
components.add(textFieldForAge);
components.add(age);
components.add(coForAge);
components.add(gender);
components.add(coForGender);
components.add(careLvl);
components.add(coForCareLvl);
任何注意将不胜感激。
GridLayout
就是这样做的,它将组件布置在一个网格中,其中每个单元格都是基于需求(即宽度/列和高度/行)的可用空间的百分比。
查看基本版式管理器及其功能的示例的《版式管理器视觉指南》 。
我建议您改为查看GridBagLayout
。 它是默认库中可用的最灵活(也是最复杂)的布局管理器。
例如
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class TestLayout31 {
public static void main(String[] args) {
new TestLayout31();
}
public TestLayout31() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public TestPane() {
JLabel lblRes = new JLabel("Resident Name");
JLabel lblRoomNo = new JLabel("RoomNo");
JLabel lblAge = new JLabel("Age");
JLabel lblGender = new JLabel("Gender");
JLabel lblCare = new JLabel("Care level");
JTextField fldRes = new JTextField("john smith", 20);
JTextField fldRoomNo = new JTextField(10);
JComboBox cmbAge = new JComboBox(new Object[]{51});
JComboBox cmbGener = new JComboBox(new Object[]{"M", "F"});
JComboBox cmbCare = new JComboBox(new Object[]{"Low"});
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.anchor = GridBagConstraints.WEST;
gbc.insets = new Insets(1, 1, 1, 1);
add(lblRes, gbc);
gbc.gridx++;
gbc.gridwidth = 4;
gbc.fill = GridBagConstraints.HORIZONTAL;
add(fldRes, gbc);
gbc.gridx = 7;
gbc.gridwidth = 1;
gbc.fill = GridBagConstraints.NONE;
add(lblRoomNo, gbc);
gbc.gridx++;
add(fldRoomNo, gbc);
gbc.gridy++;
gbc.gridx = 1;
add(lblAge, gbc);
gbc.gridx++;
add(cmbAge, gbc);
gbc.gridx++;
add(lblGender, gbc);
gbc.gridx++;
add(cmbGener, gbc);
gbc.gridx++;
gbc.gridwidth = 2;
add(lblCare, gbc);
gbc.gridx += 2;
gbc.gridwidth = GridBagConstraints.REMAINDER;
add(cmbCare, gbc);
}
}
}
复合布局示例
另一种选择是使用复合布局。 就是说,您将UI的每个部分划分为单独的容器,着重于它们各自的布局要求。
例如,您有两排字段,每行之间并没有真正的联系,因此您可以尝试分别关注每一行,而不是试图弄清楚如何使这些字段排成一行。
import java.awt.BorderLayout;
import java.awt.Dimension;
import java.awt.EventQueue;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import javax.swing.JComboBox;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import javax.swing.UIManager;
import javax.swing.UnsupportedLookAndFeelException;
public class TestLayout31 {
public static void main(String[] args) {
new TestLayout31();
}
public TestLayout31() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
JFrame frame = new JFrame("Testing");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new TestPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class TestPane extends JPanel {
public TestPane() {
JPanel topPane = new JPanel(new GridBagLayout());
JLabel lblRes = new JLabel("Resident Name");
JLabel lblRoomNo = new JLabel("RoomNo");
JLabel lblAge = new JLabel("Age");
JLabel lblGender = new JLabel("Gender");
JLabel lblCare = new JLabel("Care level");
JTextField fldRes = new JTextField("john smith", 20);
JTextField fldRoomNo = new JTextField(10);
JComboBox cmbAge = new JComboBox(new Object[]{51});
JComboBox cmbGener = new JComboBox(new Object[]{"M", "F"});
JComboBox cmbCare = new JComboBox(new Object[]{"Low"});
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.anchor = GridBagConstraints.WEST;
gbc.insets = new Insets(1, 1, 1, 1);
topPane.add(lblRes, gbc);
gbc.gridx++;
gbc.fill = GridBagConstraints.HORIZONTAL;
topPane.add(fldRes, gbc);
gbc.gridx++;
topPane.add(lblRoomNo, gbc);
gbc.gridx++;
topPane.add(fldRoomNo, gbc);
JPanel bottomPane = new JPanel(new GridBagLayout());
gbc.gridx = 0;
bottomPane.add(lblAge, gbc);
gbc.gridx++;
bottomPane.add(cmbAge, gbc);
gbc.gridx++;
bottomPane.add(lblGender, gbc);
gbc.gridx++;
bottomPane.add(cmbGener, gbc);
gbc.gridx++;
bottomPane.add(lblCare, gbc);
gbc.gridx++;
bottomPane.add(cmbCare, gbc);
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 1;
gbc.fill = GridBagConstraints.HORIZONTAL;
add(topPane, gbc);
gbc.gridy++;
add(bottomPane, gbc);
}
}
}
如果需要,这将使以后更容易修改UI。
JFrame frame = new JFrame();
JPanel contentPane = new JPanel();
JPanel northPane = new JPanel();
JPanel centerPane = new JPanel();
JPanel southPane = new JPanel();
contentPane.setLayout(new BorderLayout());
northPane.setLayout( new GridLayout(1, 6));
southPane.setLayout( new GridLayout(1, 7));
contentPane.add(northPane, BorderLayout.NORTH );
contentPane.add(centerPane, BorderLayout.CENTER);
contentPane.add(southPane, BorderLayout.SOUTH );
frame.setContentPane(contentPane);
JLabel residentNameLabel = new JLabel("Resident name ");
JTextField residentNameText = new JTextField();
JLabel roomNoLabel = new JLabel("RoomNo ");
JTextField roomNoText = new JTextField();
JLabel emptyLabel0 = new JLabel(" ");
JLabel emptyLabel1 = new JLabel(" ");
JLabel emptyLabel2 = new JLabel(" ");
JLabel emptyLabel3 = new JLabel(" ");
JLabel ageLabel = new JLabel("Age ");
JComboBox<String> ageComboBox = new JComboBox<String>();
ageComboBox.addItem("50");
ageComboBox.addItem("51");
ageComboBox.addItem("52");
ageComboBox.addItem("53");
ageComboBox.addItem("54");
ageComboBox.addItem("55");
JLabel genderLabel = new JLabel("Gender ");
JComboBox<String> genderComboBox = new JComboBox<String>();
genderComboBox.addItem("M");
genderComboBox.addItem("F");
JLabel careLevelLabel = new JLabel("Care Level ");
JComboBox<String> careLevelComboBox = new JComboBox<String>();
genderComboBox.addItem("low");;
genderComboBox.addItem("medium");
genderComboBox.addItem("high");
residentNameLabel.setHorizontalAlignment(JLabel.RIGHT);
roomNoLabel.setHorizontalAlignment(JLabel.RIGHT);
ageLabel.setHorizontalAlignment(JLabel.RIGHT);
genderLabel.setHorizontalAlignment(JLabel.RIGHT);
careLevelLabel.setHorizontalAlignment(JLabel.RIGHT);
northPane.add(emptyLabel0 );
northPane.add(residentNameLabel);
northPane.add(residentNameText );
northPane.add(roomNoLabel );
northPane.add(roomNoText );
northPane.add(emptyLabel1 );
centerPane.add(emptyLabel2 );
southPane.add(ageLabel );
southPane.add(ageComboBox );
southPane.add(genderLabel );
southPane.add(genderComboBox );
southPane.add(careLevelLabel );
southPane.add(careLevelComboBox);
southPane.add(emptyLabel3 );
contentPane.setBorder(BorderFactory.createTitledBorder("Personal Data"));
frame.addWindowListener(new WindowAdapter() {
@Override
public void windowClosing(WindowEvent evt) {
System.exit(0);
}
});
frame.setVisible(true);
frame.pack();
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