无法将列宽设置为零，即不使列不可见
我试图从JTable创建一个列，通过将宽度设置为零而不可见但是它不会发生并且它仍然可见width = 15.这是代码 –
public void restoreColumnWithWidth(int column, int width) { try { TableColumn tableColumn = table.getColumnModel().getColumn(column); table.getTableHeader().setResizingColumn(tableColumn); tableColumn.setWidth(width); tableColumn.setMaxWidth(width); tableColumn.setMinWidth(width); tableColumn.setPreferredWidth(width); } catch (Exception ex) { } }
代码有什么问题？
-
不，永远不要从
TableModel删除TableColumn，这是错误的建议，而不是使用内置方法JTable #removeColumn（TableColumn aColumn） ， -
注意，此方法仅从View中删除列，在模型中删除列仍然呈现，并且您可以还原，通过使用JTable＃addColumn（TableColumn aColumn）可见删除列
编辑
import java.awt.BorderLayout; import java.awt.EventQueue; import java.awt.Font; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.Stack; import javax.swing.JButton; import javax.swing.JFrame; import javax.swing.JPanel; import javax.swing.JScrollPane; import javax.swing.JTable; import javax.swing.WindowConstants; import javax.swing.table.DefaultTableModel; import javax.swing.table.TableColumn; import javax.swing.table.TableColumnModel; public class TableRowHeight { private static final long serialVersionUID = 1L; private JFrame frame = new JFrame("p*s*s*s*s*t*t"); private String[] columnNames = {"one", "two", "Playing with", "four", "five",}; private String[][] data = { {"aaaaaa", "bbbbbb", "cccccc", "dddddd", "eeeeeee",}, {"bbbbbb", "cccccc", "dddddd", "eeeeeee", "aaaaaa",}, {"cccccc", "dddddd", "eeeeeee", "aaaaaa", "bbbbbb",}, {"dddddd", "eeeeeee", "aaaaaa", "bbbbbb", "cccccc",}, {"eeeeeee", "aaaaaa", "bbbbbb", "cccccc", "dddddd",}}; private JTable table = new JTable(new DefaultTableModel(data, columnNames)); private TableColumnModel tcm = table.getColumnModel(); private Stack colDeleted = new Stack (); private JButton restoreButton = new JButton("Restore Column Size"); private JButton hideButton = new JButton("Set Column Size to Zero"); private JButton deleteButton = new JButton("Delete Column"); private JButton addButton = new JButton("Restore Column"); public TableRowHeight() { table.setRowMargin(4); table.setRowHeight(30); table.setFont(new Font("SansSerif", Font.BOLD + Font.PLAIN, 20)); JScrollPane scrollPane = new JScrollPane(table); for (int i = 0; i < (tcm.getColumnCount()); i++) { tcm.getColumn(i).setPreferredWidth(100); } table.setPreferredScrollableViewportSize(table.getPreferredSize()); restoreButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { tcm.getColumn(2).setPreferredWidth(100); } }); hideButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { tcm.getColumn(2).setPreferredWidth(000); } }); deleteButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { if (table.getColumnCount() > 0) { TableColumn colToDelete = table.getColumnModel().getColumn(table.getColumnCount() - 1); table.removeColumn(colToDelete); table.validate(); colDeleted.push(colToDelete); addButton.setEnabled(true); } else { deleteButton.setEnabled(false); } } }); addButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { if (colDeleted.size() > 0) { table.addColumn(colDeleted.pop()); table.validate(); deleteButton.setEnabled(true); } else { addButton.setEnabled(false); } } }); JPanel btnPanel = new JPanel(); btnPanel.add(hideButton); btnPanel.add(restoreButton); btnPanel.add(deleteButton); btnPanel.add(addButton); frame.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE); frame.add(scrollPane, BorderLayout.CENTER); frame.add(btnPanel, BorderLayout.SOUTH); frame.pack(); frame.setLocation(150, 150); frame.setVisible(true); } public static void main(String[] args) { EventQueue.invokeLater(new Runnable() { public void run() { TableRowHeight frame = new TableRowHeight(); } }); } }
EDIT2
你也得检查一下
JTable.setAutoResizeMode(JTable.AUTO_RESIZE_OFF); JTable.getTableHeader().setReorderingAllowed(false);
如果它应该被删除，而不仅仅是隐藏：从表模型中删除它。 如果只应隐藏它并稍后显示，则可以从TableColumnModel中删除TableColumn
使列高度为0有点虚假。