更改Java按钮GridBayLayout的大小
你好，我有个大问题。我想使=按钮2*高度和0按钮2*宽度其他按钮应该只是正常大小，这就是我尝试了许多组合，但我得到奇怪的大小 我明白了吗 我想得到类似的东西，我发现在webonly按钮布局更改Java按钮GridBayLayout的大小,java,swing,gridbaglayout,Java,Swing,Gridbaglayout,你好，我有个大问题。我想使=按钮2*高度和0按钮2*宽度其他按钮应该只是正常大小，这就是我尝试了许多组合，但我得到奇怪的大小 我明白了吗 我想得到类似的东西，我发现在webonly按钮布局 public void someMethod() Container cp = getContentPane(); cp.setLayout(new BorderLayout()); JPanel wyswietlacz = new JPanel(); JTextField t
public void someMethod()
Container cp = getContentPane();
cp.setLayout(new BorderLayout());
JPanel wyswietlacz = new JPanel();
JTextField txt = new JTextField("123");
txt.setPreferredSize(new Dimension(getWidth() - 10, 35));
txt.setAlignmentX(JTextField.RIGHT_ALIGNMENT);
wyswietlacz.add(txt);
JPanel opcje = new JPanel();
String[] etykiety = { "C", ".", "/", "*", "7", "8", "9", "-", "4", "5",
"6", "+", "1", "2", "3", "=", "0", "+/-" };
JButton[] przyciski = new JButton[18];
for (int i = 0; i < przyciski.length; i++)
przyciski[i] = new JButton(etykiety[i]);
GridBagLayout gridbag = new GridBagLayout();
GridBagConstraints c = new GridBagConstraints();
c.fill = GridBagConstraints.BOTH;
opcje.setLayout(gridbag);
for (int i = 0; i < przyciski.length; i++) {
if (((i + 1) % 4) == 0) {
c.gridwidth = GridBagConstraints.REMAINDER;
} else {
c.gridwidth = GridBagConstraints.RELATIVE;
}
if (i == 15) {
c.gridheight = 2;
c.fill = GridBagConstraints.HORIZONTAL;
}
if (i == 16)
c.gridy = GridBagConstraints.SOUTH;
if (i == 16) {
c.gridwidth = 2;
c.fill = GridBagConstraints.HORIZONTAL;
}
makebutton(przyciski[i], gridbag, c, opcje);
}
add(wyswietlacz, BorderLayout.NORTH);
add(opcje, BorderLayout.CENTER);
}
protected void makebutton(JButton button, GridBagLayout gridbag,
GridBagConstraints c, JPanel jp) {
gridbag.setConstraints(button, c);
jp.add(button);
}
public static void main(String[] args) {
new Kalkulator();
}
我看不出有什么问题，请阅读 然后 源代码
import java.awt.*;
import javax.swing.*;
public class GridBagButtons {
private static final Insets insets = new Insets(0, 0, 0, 0);
public static void main(final String args[]) {
final JFrame frame = new JFrame("GridBagLayout");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new GridBagLayout());
JButton button;
// Row One - Three Buttons
button = new JButton("One");
addComponent(frame, button, 0, 0, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.BOTH);
button = new JButton("Two");
addComponent(frame, button, 1, 0, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.BOTH);
button = new JButton("Three");
addComponent(frame, button, 2, 0, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.BOTH);
// Row Two - Two Buttons
button = new JButton("Four");
addComponent(frame, button, 0, 1, 2, 1, GridBagConstraints.CENTER, GridBagConstraints.BOTH);
button = new JButton("Five");
addComponent(frame, button, 2, 1, 1, 2, GridBagConstraints.CENTER, GridBagConstraints.BOTH);
// Row Three - Two Buttons
button = new JButton("Six");
addComponent(frame, button, 0, 2, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.BOTH);
button = new JButton("Seven");
addComponent(frame, button, 1, 2, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.BOTH);
frame.setSize(500, 200);
frame.setVisible(true);
}
private static void addComponent(Container container, Component component, int gridx, int gridy,
int gridwidth, int gridheight, int anchor, int fill) {
GridBagConstraints gbc = new GridBagConstraints(gridx, gridy, gridwidth, gridheight, 1.0, 1.0,
anchor, fill, insets, 0, 0);
container.add(component, gbc);
}
private GridBagButtons() {
}
}
我看不出有什么问题，请阅读 然后 源代码
import java.awt.*;
import javax.swing.*;
public class GridBagButtons {
private static final Insets insets = new Insets(0, 0, 0, 0);
public static void main(final String args[]) {
final JFrame frame = new JFrame("GridBagLayout");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new GridBagLayout());
JButton button;
// Row One - Three Buttons
button = new JButton("One");
addComponent(frame, button, 0, 0, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.BOTH);
button = new JButton("Two");
addComponent(frame, button, 1, 0, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.BOTH);
button = new JButton("Three");
addComponent(frame, button, 2, 0, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.BOTH);
// Row Two - Two Buttons
button = new JButton("Four");
addComponent(frame, button, 0, 1, 2, 1, GridBagConstraints.CENTER, GridBagConstraints.BOTH);
button = new JButton("Five");
addComponent(frame, button, 2, 1, 1, 2, GridBagConstraints.CENTER, GridBagConstraints.BOTH);
// Row Three - Two Buttons
button = new JButton("Six");
addComponent(frame, button, 0, 2, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.BOTH);
button = new JButton("Seven");
addComponent(frame, button, 1, 2, 1, 1, GridBagConstraints.CENTER, GridBagConstraints.BOTH);
frame.setSize(500, 200);
frame.setVisible(true);
}
private static void addComponent(Container container, Component component, int gridx, int gridy,
int gridwidth, int gridheight, int anchor, int fill) {
GridBagConstraints gbc = new GridBagConstraints(gridx, gridy, gridwidth, gridheight, 1.0, 1.0,
anchor, fill, insets, 0, 0);
container.add(component, gbc);
}
private GridBagButtons() {
}
}
问题是您没有在GridBagConstraints上设置weightx和weighty。将它们设置为1.0将为每个组件平均分配水平/垂直额外空间。问题在于您没有在GridBagConstraints上设置weightx和weighty。将它们设置为1.0将为每个组件平均分配水平/垂直额外空间。尝试使用此代码示例，并询问可能出现的任何问题：
import java.awt.*;
import javax.swing.*;
public class GridBagTest
{
private String[] buttonText = { "C", ".", "/", "*", "7", "8", "9", "-", "4", "5",
"6", "+", "1", "2", "3", "=", "0", "+/-" };
private JButton[] button = new JButton[18];
private int counter = 0;
private void createAndDisplayGUI()
{
JFrame frame = new JFrame("GridBagLayout Test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel contentPane = new JPanel();
contentPane.setLayout(new BorderLayout());
JPanel northPanel = new JPanel();
northPanel.setLayout(new BorderLayout(2, 2));
JTextField tfield = new JTextField();
northPanel.add(tfield, BorderLayout.CENTER);
JPanel centerPanel = new JPanel();
centerPanel.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.anchor = GridBagConstraints.PAGE_START;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1.0;
gbc.weighty = 1.0;
gbc.insets = new Insets(2, 2, 2, 2);
for (int i = 0; i < button.length; i++)
{
System.out.println("Button Text : " + buttonText[i]);
button[i] = new JButton(buttonText[i]);
}
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 4; j++)
{
gbc.gridx = j;
gbc.gridy = i;
centerPanel.add(button[counter++], gbc);
}
}
gbc.gridx = 0;
gbc.gridy = 3;
centerPanel.add(button[counter++], gbc);
gbc.gridx = 1;
gbc.gridy = 3;
centerPanel.add(button[counter++], gbc);
gbc.gridx = 2;
gbc.gridy = 3;
centerPanel.add(button[counter++], gbc);
gbc.gridx = 3;
gbc.gridy = 3;
gbc.gridwidth = 1;
gbc.gridheight = 2;
centerPanel.add(button[counter++], gbc);
int count = counter;
System.out.println(button[--count].getText());
gbc.gridx = 0;
gbc.gridy = 4;
gbc.gridheight = 1;
gbc.gridwidth = 2;
centerPanel.add(button[counter++], gbc);
gbc.gridwidth = 1;
gbc.gridx = 2;
gbc.gridy = 4;
centerPanel.add(button[counter++], gbc);
contentPane.add(northPanel, BorderLayout.PAGE_START);
contentPane.add(centerPanel, BorderLayout.CENTER);
frame.setContentPane(contentPane);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
public static void main(String... args)
{
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
new GridBagTest().createAndDisplayGUI();
}
});
}
}
尝试使用此代码示例，并询问可能出现的任何问题：
import java.awt.*;
import javax.swing.*;
public class GridBagTest
{
private String[] buttonText = { "C", ".", "/", "*", "7", "8", "9", "-", "4", "5",
"6", "+", "1", "2", "3", "=", "0", "+/-" };
private JButton[] button = new JButton[18];
private int counter = 0;
private void createAndDisplayGUI()
{
JFrame frame = new JFrame("GridBagLayout Test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel contentPane = new JPanel();
contentPane.setLayout(new BorderLayout());
JPanel northPanel = new JPanel();
northPanel.setLayout(new BorderLayout(2, 2));
JTextField tfield = new JTextField();
northPanel.add(tfield, BorderLayout.CENTER);
JPanel centerPanel = new JPanel();
centerPanel.setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.anchor = GridBagConstraints.PAGE_START;
gbc.fill = GridBagConstraints.BOTH;
gbc.weightx = 1.0;
gbc.weighty = 1.0;
gbc.insets = new Insets(2, 2, 2, 2);
for (int i = 0; i < button.length; i++)
{
System.out.println("Button Text : " + buttonText[i]);
button[i] = new JButton(buttonText[i]);
}
for (int i = 0; i < 3; i++)
{
for (int j = 0; j < 4; j++)
{
gbc.gridx = j;
gbc.gridy = i;
centerPanel.add(button[counter++], gbc);
}
}
gbc.gridx = 0;
gbc.gridy = 3;
centerPanel.add(button[counter++], gbc);
gbc.gridx = 1;
gbc.gridy = 3;
centerPanel.add(button[counter++], gbc);
gbc.gridx = 2;
gbc.gridy = 3;
centerPanel.add(button[counter++], gbc);
gbc.gridx = 3;
gbc.gridy = 3;
gbc.gridwidth = 1;
gbc.gridheight = 2;
centerPanel.add(button[counter++], gbc);
int count = counter;
System.out.println(button[--count].getText());
gbc.gridx = 0;
gbc.gridy = 4;
gbc.gridheight = 1;
gbc.gridwidth = 2;
centerPanel.add(button[counter++], gbc);
gbc.gridwidth = 1;
gbc.gridx = 2;
gbc.gridy = 4;
centerPanel.add(button[counter++], gbc);
contentPane.add(northPanel, BorderLayout.PAGE_START);
contentPane.add(centerPanel, BorderLayout.CENTER);
frame.setContentPane(contentPane);
frame.pack();
frame.setLocationByPlatform(true);
frame.setVisible(true);
}
public static void main(String... args)
{
SwingUtilities.invokeLater(new Runnable()
{
public void run()
{
new GridBagTest().createAndDisplayGUI();
}
});
}
}
谢谢我更正代码：我得到了这样的东西！[]也许定制MigLayout更好更简单，抱歉，但我对他们的许可证不太了解，对这个GridBag有什么想法吗：从默认库？@Robert Kilar，我不知道为什么，抱歉，我给你发了GridBagLayout如何工作的完整规范inc代码示例，我不想调试你的代码，没有理由，嗯，我们这里没有任何类型的编码支持，在这个论坛上，我们可以向您发送正确的信息并向您显示正确的方向，谢谢我更正了代码：我得到了类似的东西！[]也许定制MigLayout更好更简单，抱歉，但我对他们的许可证不太了解，对这个GridBag有什么想法吗：从默认库？@Robert Kilar，我不知道为什么，抱歉，我给你发了GridBagLayout如何工作的完整规范inc代码示例，我不想调试你的代码，没有理由，嗯，我们这里没有任何类型的编码支持，在这个论坛上，我们可以给您发送正确的信息，并向您显示正确的方向，谢谢，现在它可以工作了，但前提是我使用正确的窗口大小，否则最后一行将适合窗口。@RobertKilar您说的太宽是什么意思？左边是JFrame的尺寸500300，右边是180，208@RobertKilar看起来您仅为某些按钮设置了weightx/weighty。我知道你想让按钮填满整个区域。谢谢，现在它可以工作了，但只有当我使用正确的窗口大小时，否则最后一排就适合窗口了。@RobertKilar，你说太宽是什么意思？左边是JFrame的尺寸500300，右边是180，208@RobertKilar看起来您仅为某些按钮设置了weightx/weighty。我知道你想让按钮填满整个区域。@RobertKilar:不客气，请保持微笑：-这也是一个奇特的GridBagLayout示例。1+@RobertKilar:非常欢迎你，保持微笑：-这也是一个奇特的GridBagLayout示例。1+请确保someMethod不是绘画方法！请确保someMethod不是绘画方法！