对齐与GridBagLayout的

问题描述：

我创建使用的GridBagLayout一个简单的GUI，几乎一切顺利吧，但这个细节：有两列，左边的一个标签和右一为其他部件一样的JTextArea，我想第一列与右边对齐。对齐与GridBagLayout的

所以我试图用锚属性附加伤害设定为GridBagConstraints.NORTHEAST或。东，和他们没有工作。

我的代码如下：

private void createDataPanel() { 
     data = new JPanel(); 
     data.setLayout(new GridBagLayout()); 
     GridBagConstraints c = new GridBagConstraints(); 
     data.setBorder(new TitledBorder("NOTAM proposal parameters")); 

     c.gridx = 0; 
     c.gridy = 0; 
     c.insets = new Insets(5, 10, 5, 10); 
     c.fill = GridBagConstraints.HORIZONTAL; 
     data.add(new JLabel("Start time (DD-MM-YYYY HH:MM:SS):"), c); 

     c.gridx++; 
     long today = System.currentTimeMillis(); 
     startTimePicker = new JXDatePicker(new Date(today)); 
     startTimePicker.setFormats(dateFormatter); 
     data.add(startTimePicker); 

     c.gridx = 0; 
     c.gridy++; 
     c.anchor = GridBagConstraints.EAST; 
     data.add(new JLabel("End time (DD-MM-YYYY HH:MM:SS):"), c); 

     c.gridx++; 
     c.anchor = GridBagConstraints.CENTER; 
     long tomorrow = today + 86400000; 
     endTimePicker = new JXDatePicker(new Date(tomorrow)); 
     endTimePicker.setFormats(dateFormatter); 
     data.add(endTimePicker, c); 

     c.gridx = 0; 
     c.gridy++; 
     c.anchor = GridBagConstraints.NORTHEAST; 
     JPanel itemEPanel = new JPanel(); 
     itemEPanel.setLayout(new BoxLayout(itemEPanel, BoxLayout.Y_AXIS)); 
     itemEPanel.add(new JLabel("Item E:")); 
     remainingChars = new JLabel(Integer.toString(availableChars) + " characters remaining"); 
     itemEPanel.add(remainingChars); 
     data.add(itemEPanel, c); 

     c.gridx++; 
     c.anchor = GridBagConstraints.CENTER; 
     itemEText = new JTextArea(8, 1); 
     JScrollPane itemEScroll = new JScrollPane(itemEText); 
     itemEText.setLineWrap(true); 
     itemEText.setWrapStyleWord(true); 
     itemEText.setBackground(Color.WHITE); 
     itemEText.getDocument().addDocumentListener(new DocumentListener() { 

      @Override 
      public void removeUpdate(DocumentEvent e) { 
       updateRemainingChars(e.getDocument()); 
      } 

      @Override 
      public void insertUpdate(DocumentEvent e) { 
       updateRemainingChars(e.getDocument()); 
      } 

      @Override 
      public void changedUpdate(DocumentEvent e) { 
       updateRemainingChars(e.getDocument()); 
      } 

      public void updateRemainingChars(Document doc) { 
       availableChars = maxItemECharacters - doc.getLength(); 
       if(availableChars>=0){ 
        remainingChars.setText(Integer.toString(availableChars) + " characters remaining"); 
        remainingChars.setForeground(Color.BLACK); 
        if(!okButton.isEnabled()) okButton.setEnabled(true); 
       } 
       else{ 
        remainingChars.setText("Message too long: " + Integer.toString(availableChars)); 
        remainingChars.setForeground(Color.RED); 
        if(okButton.isEnabled()) okButton.setEnabled(false); 
       } 
      } 
     }); 
     data.add(itemEScroll, c); 

     c.gridx = 0; 
     c.gridy++; 
     JPanel itemDPanel = new JPanel(new FlowLayout()); 
     applicable = new JCheckBox("Applicable"); 
     applicable.setSelected(true); 
     applicable.addActionListener(new ActionListener() { 

      @Override 
      public void actionPerformed(ActionEvent arg0) { 
       itemDText.setEnabled(applicable.isSelected()); 
      } 
     }); 
     itemDPanel.add(applicable); 
     itemDPanel.add(new JLabel("Item D:")); 
     data.add(itemDPanel, c); 

     c.gridx++; 
     itemDText = new JTextField(); 
     data.add(itemDText, c); 
    }

不过，目前看起来是这样的： enter image description here

它该如何调整到正确的呢？

答

设置GridBagConstraints.NORTHEAST或。东但是使用填充= NONE

aaaach显然+1 – mKorbel

答

JLabel.setHorizontalTextPosition(JLabel.RIGHT);

现在没有工作或者 –

答

的问题是，你使用这个约束：

c.fill = GridBagConstraints.HORIZONTAL;

因此所有组件均横向拉长，留下alignement而不是GridBagLayout。

答

你的意思是你希望你的JLabel的文本是在右侧。如果是尝试初始化JLabel就像这个

JLabel someLabel = new JLabel("My Text will align towards RIGHT", JLabel.RIGHT);

对齐与GridBagLayout的

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