嘿，我正在嘗試將面板內的所有面板對齊到較大面板的左側。如何將jPanel中的所有jPanel對齊到左邊？
這裏是什麼，我現在面臨着一個畫面：（！包含所有其他面板中的一個 - 我要叫它主）
對於主面板 我使用的是創造它時，下面的代碼：
JPanel panel = new JPanel();
panel.setLayout(new BoxLayout(panel, BoxLayout.Y_AXIS));
對於每一個在它的面板，我也使用BoxLayout的，但我已經嘗試過類似的事情[的JPanel] .setAlig每個面板上的nmentX（Component.LEFT_ALIGNMENT），但似乎不起作用。
任何幫助，將不勝感激！
:)
編輯：對於「框的尺寸（米）：」標籤，有沒有對齊，要它包含在面板頂部的方法嗎？它在它自己的面板中。
編輯：一旦固定：下面
解決方案，謝謝大家的幫助:)
你有很多的可能性，取決於你的所有需求。
所有我在這裏所做的是使用複合面板，並使用GridBagLayout調整佈局
public class BadLayout03 {
public static void main(String[] args) {
new BadLayout03();
}
public BadLayout03() {
EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
try {
UIManager.setLookAndFeel(UIManager.getSystemLookAndFeelClassName());
} catch (ClassNotFoundException | InstantiationException | IllegalAccessException | UnsupportedLookAndFeelException ex) {
}
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.setLayout(new BorderLayout());
frame.add(new MasterPane());
frame.pack();
frame.setLocationRelativeTo(null);
frame.setVisible(true);
}
});
}
public class MasterPane extends JPanel {
public MasterPane() {
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 1;
gbc.weightx = 1;
gbc.fill = GridBagConstraints.HORIZONTAL;
gbc.insets = new Insets(4, 4, 4, 4);
gbc.anchor = GridBagConstraints.WEST;
add(new DimensionsPane(), gbc);
gbc.gridy++;
add(new ColorPane(), gbc);
gbc.gridy++;
add(new ReinforementPane(), gbc);
gbc.gridy++;
add(new SealableTopPane(), gbc);
gbc.gridy++;
add(new CardGradePane(), gbc);
gbc.gridy++;
add(new QuantityPane(), gbc);
gbc.gridy++;
add(new OrderPricePane(), gbc);
}
}
public class DimensionsPane extends JPanel {
public DimensionsPane() {
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 1;
gbc.weightx = 1;
gbc.anchor = GridBagConstraints.WEST;
add(new JLabel("Dimensions of box (m):"), gbc);
gbc.gridx = 1;
gbc.gridy = 0;
gbc.anchor = GridBagConstraints.EAST;
add(new JLabel("Length: 33.0"), gbc);
gbc.gridy++;
add(new JLabel("Width: 3.0"), gbc);
gbc.gridy++;
add(new JLabel("Height: 3.0"), gbc);
}
}
public class ColorPane extends JPanel {
public ColorPane() {
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 1;
gbc.anchor = GridBagConstraints.WEST;
add(new JLabel("Colour :"), gbc);
gbc.gridx = 1;
gbc.gridy = 0;
gbc.anchor = GridBagConstraints.EAST;
add(new JLabel("0"), gbc);
}
}
public class ReinforementPane extends JPanel {
public ReinforementPane() {
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 1;
gbc.anchor = GridBagConstraints.WEST;
add(new JLabel("Reinforcement :"), gbc);
gbc.gridx = 1;
gbc.gridy = 0;
gbc.anchor = GridBagConstraints.EAST;
add(new JLabel("None"), gbc);
}
}
public class SealableTopPane extends JPanel {
public SealableTopPane() {
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 1;
gbc.anchor = GridBagConstraints.WEST;
add(new JLabel("Selable top :"), gbc);
gbc.gridx = 1;
gbc.gridy = 0;
gbc.anchor = GridBagConstraints.EAST;
add(new JLabel("No"), gbc);
}
}
public class CardGradePane extends JPanel {
public CardGradePane() {
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 1;
gbc.anchor = GridBagConstraints.WEST;
add(new JLabel("Grade of card:"), gbc);
gbc.gridx = 1;
gbc.gridy = 0;
gbc.anchor = GridBagConstraints.EAST;
add(new JLabel("1"), gbc);
}
}
public class QuantityPane extends JPanel {
public QuantityPane() {
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 1;
gbc.anchor = GridBagConstraints.WEST;
add(new JLabel("Quantity:"), gbc);
gbc.gridx = 1;
gbc.gridy = 0;
gbc.anchor = GridBagConstraints.EAST;
add(new JLabel("1"), gbc);
}
}
public class OrderPricePane extends JPanel {
public OrderPricePane() {
setLayout(new GridBagLayout());
GridBagConstraints gbc = new GridBagConstraints();
gbc.gridx = 0;
gbc.gridy = 0;
gbc.weightx = 1;
gbc.anchor = GridBagConstraints.WEST;
add(new JLabel("Order price:"), gbc);
gbc.gridx = 1;
gbc.gridy = 0;
gbc.anchor = GridBagConstraints.EAST;
add(new JLabel("$558.9"), gbc);
}
}
}
這一個去收藏夾。 :) –
啊太棒了！感謝所有的幫助@MadProgrammer，絕對使用這個:)非常感謝 –
您可以使用MigLayout：
import java.awt.Color;
import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;
import net.miginfocom.swing.MigLayout;
public class PanelAlignment extends JFrame {
JPanel contentPane = new JPanel();
JPanel firstPanel = new JPanel();
JPanel secondPanel = new JPanel();
JPanel thirdPanel = new JPanel();
JLabel dimOfBox, rein, seaTop;
public PanelAlignment() {
contentPane.setLayout(new MigLayout());
firstPanel.add(dimOfBox = new JLabel("Dimensions of box (m): "));
firstPanel.setBorder(BorderFactory.createLineBorder(Color.BLACK));
contentPane.add(firstPanel,"wrap");
secondPanel.add(rein = new JLabel("Reinforcement: "));
secondPanel.setBorder(BorderFactory.createLineBorder(Color.BLACK));
contentPane.add(secondPanel,"wrap");
thirdPanel.add(dimOfBox = new JLabel("Sealable top: "));
thirdPanel.setBorder(BorderFactory.createLineBorder(Color.BLACK));
contentPane.add(thirdPanel,"wrap");
add(contentPane);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
public void run() {
PanelAlignment pa = new PanelAlignment();
pa.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
pa.pack();
pa.setVisible(true);
}
});
}
}
，你會得到類似這個：
我最近回答了類似的問題here
祝你好運！ :)
這是一個信息豐富的答案！感謝您抽出寶貴的時間爲我創建，不幸的是，在大學裏我們無法下載Java的額外功能;我不得不下載MigLayout：/ 雖然很好的答案，我會與我的講師聯繫，看看我是否可以使用它，再次感謝，如果我沒有收到不同的答案，我會標記此一個作爲答案:) 謝謝 –
順便說一句，我使用JLabels設置結果，這是一個壞主意嗎？ （第一次使用Java GUI！） –
@OmarQassem是奧馬爾！使用'JLabel'來設置結果是一個壞主意！如果您的目標是保護您的值不受編輯，您可以使用'JTextField'並調用setEditable（false）;方法。如果您不能使用MigLayout，請考慮接受MadProgrammers的回答。祝你好運！ –
順便說一下，我知道它看起來愚蠢的時刻，每個小組有一個邊界。我只把它們放在那裏，所以我實際上可以看到面板的位置:) –
使用'GridLayout'或'GridBagLayout'。看看[佈局管理器的視覺指南]（http://docs.oracle.com/javase/tutorial/uiswing/layout/visual.html）和[使用佈局管理器]（http://docs.oracle.com）。 com/javase/tutorial/uiswing/layout/using.html）獲取更多信息 – MadProgrammer
旁註：您是否在使用'JLabel'來設置結果？ –