标题解释了这个问题。我怎么能轻易做到这一点?
答案 0 :(得分:38)
import java.awt.*;
import java.awt.event.*;
import java.util.List;
import java.util.Arrays;
import javax.swing.*;
import javax.swing.table.*;
public class TableHeaderHeightTest {
private static int HEADER_HEIGHT = 32;
private JTable makeTable() {
JTable table = new JTable(new DefaultTableModel(2, 20));
table.setAutoResizeMode(JTable.AUTO_RESIZE_OFF);
return table;
}
public JComponent makeUI() {
JPanel p = new JPanel(new GridLayout(2,1));
JTable table1 = makeTable();
//Bad: >>>>
JTableHeader header = table1.getTableHeader();
//Dimension d = header.getPreferredSize();
//d.height = HEADER_HEIGHT;
//header.setPreferredSize(d); //addColumn case test
header.setPreferredSize(new Dimension(100, HEADER_HEIGHT));
p.add(makeTitledPanel("Bad: JTableHeader#setPreferredSize(...)", new JScrollPane(table1)));
//<<<<
JTable table2 = makeTable();
JScrollPane scroll = new JScrollPane(table2);
scroll.setColumnHeader(new JViewport() {
@Override public Dimension getPreferredSize() {
Dimension d = super.getPreferredSize();
d.height = HEADER_HEIGHT;
return d;
}
});
// //or
// table2.setTableHeader(new JTableHeader(table2.getColumnModel()) {
// @Override public Dimension getPreferredSize() {
// Dimension d = super.getPreferredSize();
// d.height = HEADER_HEIGHT;
// return d;
// }
// });
p.add(makeTitledPanel("Override getPreferredSize()", scroll));
final List<JTable> list = Arrays.asList(table1, table2);
JPanel panel = new JPanel(new BorderLayout());
panel.add(p);
panel.add(new JButton(new AbstractAction("addColumn") {
@Override public void actionPerformed(ActionEvent e) {
for(JTable t: list) {
t.getColumnModel().addColumn(new TableColumn());
JTableHeader h = t.getTableHeader();
Dimension d = h.getPreferredSize();
System.out.println(d);
}
}
}), BorderLayout.SOUTH);
panel.setBorder(BorderFactory.createEmptyBorder(5,5,5,5));
return panel;
}
private static JComponent makeTitledPanel(String title, JComponent c) {
JPanel p = new JPanel(new BorderLayout());
p.add(c);
p.setBorder(BorderFactory.createTitledBorder(title));
return p;
}
public static void main(String[] args) {
EventQueue.invokeLater(new Runnable() {
@Override public void run() {
createAndShowGUI();
}
});
}
public static void createAndShowGUI() {
JFrame f = new JFrame();
f.setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);
f.getContentPane().add(new TableHeaderHeightTest().makeUI());
f.setSize(320, 320);
f.setLocationRelativeTo(null);
f.setVisible(true);
}
}
答案 1 :(得分:1)
试试这个......
if jtable attached to scrollpane
then
table.getTableHeader().setPreferredSize(
new Dimension(scrollpane.getwidth(),height)
);
else
table.getTableHeader().setPreferredSize(
new Dimension(width,height)
);
答案 2 :(得分:1)
Font bigFont = new Font("sansserif", Font.PLAIN, 24); // or whatever
myTable.getTableHeader().setFont(bigFont);
这是增加TableHeader的preferredSize的简单方法。它将增加标题的高度,但是如果您的列名太长,则它们可能不适合宽度方向。
答案 3 :(得分:0)
试试这个
JTableHeader th = table.getTableHeader();
th.setPreferredSize(new Dimension(100, 100));
答案 4 :(得分:0)
您可以设置首选宽度,而不是像在aterai答案中那样覆盖JViewport.getPreferredSize。
JScrollPane scroll = new JScrollPane(table2);
scroll.getColumnHeader().setPreferredSize(new Dimension(0, HEADER_HEIGHT));
JScrollPane忽略列标题宽度,因此您可以在此安全地设置零。
答案 5 :(得分:-1)
在设置首选标题尺寸时,您也可以使用非常大的宽度,根据列模型中的所需宽度,它会截断。
tableHeader.setPreferredSize(new Dimension(10000, HEADER_HEIGHT));