我正在尝试创建一个 JTable,它有一个看起来像列标题的行标题,我在上面花了太多时间:/ 我的情况类似于这个问题:JTable Row Header Implementation 也许这个: customizing jtable cellrenderer with table's cell header color
他们似乎还没有把我带到那里。我已经搜索并尝试了很多示例,但都缺乏。 Oracle/Sun 甚至没有任何带有行标题的表示例。看来这种 table 应该不多见。
这只是格式化第一列,但它看起来或不像列标题: http://java-swing-tips.blogspot.com/2011/01/jtable-rowheader.html
这似乎对行标题使用了 JList,它存在对齐问题(每行偏移 +1 像素),并且当我设置外观时看起来并不好。 http://www.java2s.com/Code/Java/Swing-Components/TableRowHeaderExample.htm
这似乎是我需要使用的想法(行标题是一个单独的 JTable,但随后作为行标题加载到 JScrollPane),但我需要使其适应我的代码,然后确保行标题获取 header 的正确外观。
http://www.chka.de/swing/table/row-headers/JTable.html
这就是我所做的减去最后一点。我尝试让表头的渲染器也成为行头的渲染器。行标题/第一列现在是灰色而不是白色,因为它只是另一个数据列,但看起来仍然不像列标题。这是正确的吗?还是我应该坚持将其作为主表中的常规列并对其进行其他操作?
这是我更新表格的代码。此方法只是采用一个字符串数组作为列标题,一个字符串数组作为行标题,一个二维字符串数组作为主要数据。我有一个用于行标题的 JTable dispTableRowHeader 和一个用于主数据表的 JTable dispTable。
private void updateDispTable(String[][] graphicalTable, String[] graphicalTableColumnHeader, String[] graphicalTableRowHeader) {
//set model for the main data table, put in data. Also prevent editing cells
dispTable.setModel(new javax.swing.table.DefaultTableModel(
graphicalTable,
graphicalTableColumnHeader
){
@Override
public boolean isCellEditable(int rowIndex, int mColIndex) {
return false;
}
});
//some mods for main data table
dispTable.getTableHeader().setReorderingAllowed(false);//Was also able to do this within NetBeans GUI Builder by doing Table Contents from Jtable inspector item
dispTable.getTableHeader().setResizingAllowed(false);
//load main table to scrollpane
jScrollPane2.setViewportView(dispTable);
//get model for JTable that will be used as the row header, fill in values
DefaultTableModel rowHeaderTableModel = new DefaultTableModel(0, 1);//one column
for (int i = 0; i < graphicalTable.length; i++)
rowHeaderTableModel.addRow(new Object[] { graphicalTableRowHeader[i] } );
//set model for row header, put in data. Alter renderer to make it like col header
dispTableRowHeader.setModel(rowHeaderTableModel);
dispTableRowHeader.setDefaultRenderer(Object.class, dispTableRowHeader.getTableHeader().getDefaultRenderer());//makes it gray but not like the header :/
//dispTableRowHeader.setDefaultRenderer(Object.class, jScrollPane2.getColumnHeader().getDefaultRenderer());
//load row header to scrollpane's row header
jScrollPane2.setRowHeaderView(dispTableRowHeader);
//set the table corner and disallow reordering and resizing
JTableHeader corner = dispTableRowHeader.getTableHeader();
corner.setReorderingAllowed(false);
corner.setResizingAllowed(false);
jScrollPane2.setCorner(JScrollPane.UPPER_LEFT_CORNER, corner);//load to scrollpane
}
非常感谢任何帮助!
编辑下方编辑下方 我创建了一个全新的项目来进行实验并尝试了 trashgod 的方法(尽管它是针对行标题而不是第二行),我发现它给了我相同的结果,只是单元格样式为灰色而不是像标题一样。然后我尝试删除我的外观调整
// Set System L&F
UIManager.setLookAndFeel( UIManager.getSystemLookAndFeelClassName() );
然后行标题看起来和列标题一样! .. 但那是在 Nimbus 或任何默认的外观和感觉中。请参见下图。第一个是我的外观设置为系统的如上(在 Win7 中),第二个是默认设置。
系统外观 (Win7)-
Java 的 Nimbus 外观和感觉-
果然我的程序也发生了同样的情况。所以现在看来我的问题是外观。我希望它看起来像第一张图片(系统的外观和感觉),但左侧也有样式。
顺便说一句,这是 MySQL Workbench Win7 中的一个示例,它具有样式正确的行标题和列标题,它们甚至在鼠标悬停时将单元格涂成蓝色。太糟糕了,它不是用 Java 制作的,所以我可以尝试检查他们是如何制作的。
MySQL Workbench 截图-
编辑下方编辑下方 SSCCE代码
package mytableexample2;
import java.awt.Component;
import javax.swing.JTable;
import javax.swing.UIManager;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableCellRenderer;
public class MyTableExample2 extends javax.swing.JFrame {
public MyTableExample2() {
initComponents();
}
@SuppressWarnings("unchecked")
private void initComponents() {
jScrollPane1 = new javax.swing.JScrollPane();
jTable1 = new javax.swing.JTable(){
@Override
public Component prepareRenderer(
TableCellRenderer renderer, int row, int col) {
if (col == 0) {
return this.getTableHeader().getDefaultRenderer()
.getTableCellRendererComponent(this,
this.getValueAt(row, col), false, false, row, col);
} else {
return super.prepareRenderer(renderer, row, col);
}
}
};
jTable1.setAutoCreateRowSorter(false);
final JTableHeader header = jTable1.getTableHeader();
header.setDefaultRenderer(new HeaderRenderer(jTable1));
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jTable1.setModel(new javax.swing.table.DefaultTableModel(
new Object [][] {
{"Row 1", "Data 2", "Data 3", "Data 4", "Data 5"},
{"Row 2", "Data 6", "Data 7", "Data 8", "Data 9"},
{"Row 3", "Data 10", "Data 11", "Data 12", "Data 13"}
},
new String [] {
"", "Col 1", "Col 2", "Col 3", "Col 4"
}
));
jScrollPane1.setViewportView(jTable1);
//Netbeans generated layout
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 380, Short.MAX_VALUE)
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jScrollPane1, javax.swing.GroupLayout.DEFAULT_SIZE, 278, Short.MAX_VALUE)
.addContainerGap())
);
pack();
}
public static void main(String args[]) {
try {
//THIS SETS TO SYSTEM'S LOOK AND FEEL
UIManager.setLookAndFeel( UIManager.getSystemLookAndFeelClassName() );
//THIS SETS TO OTHER JAVA LOOK AND FEEL
//UIManager.setLookAndFeel("javax.swing.plaf.nimbus.NimbusLookAndFeel");
//UIManager.setLookAndFeel("javax.swing.plaf.metal.MetalLookAndFeel");
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(MyTableExample2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(MyTableExample2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(MyTableExample2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(MyTableExample2.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new MyTableExample2().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTable jTable1;
}
class HeaderRenderer implements TableCellRenderer {
TableCellRenderer renderer;
public HeaderRenderer(JTable jTable1) {
renderer = jTable1.getTableHeader().getDefaultRenderer();
}
@Override
public Component getTableCellRendererComponent(
JTable table, Object value, boolean isSelected,
boolean hasFocus, int row, int col) {
return renderer.getTableCellRendererComponent(
table, value, isSelected, hasFocus, row, col);
}
}
最佳答案
使用这个 HeaderRenderer
作为第一个 row 列渲染器可能会产生您想要的效果:
附录:我更新了示例以反射(reflect)您的手动布局的 sscce。我平台的 getSystemLookAndFeelClassName()
是 com.apple.laf.AquaLookAndFeel
,所以我没有看到相同的结果。两个观察结果:您已经setAutoCreateRowSorter(false)
以防止排序小部件激增,并且 Nimbus 保留它交替行突出显示。
import java.awt.Component;
import javax.swing.JFrame;
import javax.swing.JScrollPane;
import javax.swing.JTable;
import javax.swing.table.JTableHeader;
import javax.swing.table.TableCellRenderer;
public class MyTableExample3 extends JFrame {
private JScrollPane scrollPane;
private JTable table;
public MyTableExample3() {
initComponents();
}
@SuppressWarnings("unchecked")
private void initComponents() {
this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
table = new javax.swing.JTable() {
@Override
public Component prepareRenderer(
TableCellRenderer renderer, int row, int col) {
if (col == 0) {
return this.getTableHeader().getDefaultRenderer()
.getTableCellRendererComponent(this, this.getValueAt(
row, col), false, false, row, col);
} else {
return super.prepareRenderer(renderer, row, col);
}
}
};
table.setAutoCreateRowSorter(false);
final JTableHeader header = table.getTableHeader();
header.setDefaultRenderer(new HeaderRenderer(table));
table.setModel(new javax.swing.table.DefaultTableModel(
new Object[][]{
{"Row 1", "Data 2", "Data 3", "Data 4", "Data 5"},
{"Row 2", "Data 6", "Data 7", "Data 8", "Data 9"},
{"Row 3", "Data 10", "Data 11", "Data 12", "Data 13"}
},
new String[]{
"", "Col 1", "Col 2", "Col 3", "Col 4"
}));
scrollPane = new JScrollPane(table);
this.add(scrollPane);
pack();
}
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
new MyTableExample3().setVisible(true);
}
});
}
private static class HeaderRenderer implements TableCellRenderer {
TableCellRenderer renderer;
public HeaderRenderer(JTable table) {
renderer = table.getTableHeader().getDefaultRenderer();
}
@Override
public Component getTableCellRendererComponent(
JTable table, Object value, boolean isSelected,
boolean hasFocus, int row, int col) {
return renderer.getTableCellRendererComponent(
table, value, isSelected, hasFocus, row, col);
}
}
}
关于java - 尝试使用正确的行标题创建 JTable,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/8002445/