我的问题很简单,但我搜索了整个互联网和StackOverflow,但无法找到完美的答案,所以我在这里。我是通过JTable
上的类以编程方式创建JForm
,并在DefaultTableModel
中添加JTable
来保存数据,然后在DefaultTableModel
中逐个添加行如下。
private JTable desiredJTable = new JTable();
private DefaultTableModel tableModel = new DefaultTableModel();
private List<String> myArrayOne= new ArrayList<String>();
private List<String> myArrayTwo= new ArrayList<String>();
private Map<String, Integer> myDictionaryOne= new HashMap<String, Integer>();
private Map<String, Integer> myDictionaryTwo= new HashMap<String, Integer>();
我正在添加如下所示的行,所以我不知道单色行的修复长度。
int RowIndex = 0;
int i = 0;
for (String word : myDictionaryOne.keySet())
{
if (myArrayOne.contains(word) == true)
{
tableModel.addRow(new Object[] { word });
//tableModel.setRowColour(RowIndex, Color.GREEN);
RowIndex++;
i++;
}
if (i >= 10)
{
break;
}
}
int i = 0;
for (String word : myDictionaryTwo.keySet())
{
if (myArrayTwo.contains(word) == true)
{
tableModel.addRow(new Object[] { word });
//tableModel.setRowColour(RowIndex, Color.RED);
RowIndex++;
i++;
}
if (i >= 10)
{
break;
}
}
我想在添加注释代码的地方更改颜色,以便我该怎么做? 我有一个想法,我将保存这些行没有所需的颜色,然后在结束,只是立即渲染整个表?有可能做到这一点吗?
我使用了下面的代码,但它的工作方式几乎符合我的要求,但它没有按行保存在ArrayList中显示正确的颜色......
CustomRenderer colouringTable = new CustomRenderer();
int RowIndex = 0;
int i = 0;
for (String word : myDictionaryOne.keySet())
{
if (myArrayOne.contains(word) == true)
{
tableModel.addRow(new Object[] { word });
//tableModel.setRowColour(RowIndex, Color.GREEN);
colouringTable.setColors(Color.GREEN);
RowIndex++;
i++;
}
if (i >= 10)
{
break;
}
}
int i = 0;
for (String word : myDictionaryTwo.keySet())
{
if (myArrayTwo.contains(word) == true)
{
tableModel.addRow(new Object[] { word });
//tableModel.setRowColour(RowIndex, Color.RED);
colouringTable.setColors(Color.RED);
RowIndex++;
i++;
}
if (i >= 10)
{
break;
}
}
desiredJTable.getColumnModel().getColumn(0).setCellRenderer(colouringTable);
并增加了一个班级......
// JTable Colouring Class
class CustomRenderer extends DefaultTableCellRenderer
{
private List<Color> desiredColors = new ArrayList<Color>();
private static final long serialVersionUID = 6703872492730589499L;
public void setColors(Color incomingColor)
{
desiredColors.add(incomingColor);
}
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column)
{
Component cellComponent = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
// This Code Is Not Working Perfectly | Its Colouring All With Same Last Color...
for (int i = 0; i < desiredColors.size(); i++) {
cellComponent.setBackground(desiredColors.get(i));
}
/*
// This Code Is Working
if(row == 0){
cellComponent.setBackground(Color.YELLOW);
} else if ( row == 1){
cellComponent.setBackground(Color.GRAY);
} else {
cellComponent.setBackground(Color.CYAN);
}
*/
return cellComponent;
}
}
那么现在如何解决这个问题...... ???
答案 0 :(得分:2)
您的TableModel
应存储在为该单元格调用renderer时确定单元格颜色所需的信息。在这个完整的example中,每个Row
都有一个state
,以及自定义TableCellRenderer
查询,用于确定要显示的颜色。此相关example说明了如何使用TableModel
创建自定义Map
。
答案 1 :(得分:2)
最后,我能够在其他人的帮助下做我想做的事。我使用下面的代码,它按照我的愿望工作,并按行保存在ArrayList中显示正确的颜色......
CustomRenderer colouringTable = new CustomRenderer();
int RowIndex = 0;
int i = 0;
for (String word : myDictionaryOne.keySet())
{
if (myArrayOne.contains(word) == true)
{
tableModel.addRow(new Object[] { word });
colouringTable.setColors(Color.GREEN);
RowIndex++;
i++;
}
if (i >= 10)
{
break;
}
}
int i = 0;
for (String word : myDictionaryTwo.keySet())
{
if (myArrayTwo.contains(word) == true)
{
tableModel.addRow(new Object[] { word });
colouringTable.setColors(Color.RED);
RowIndex++;
i++;
}
if (i >= 10)
{
break;
}
}
desiredJTable.getColumnModel().getColumn(0).setCellRenderer(colouringTable);
并增加了一个班级......
// JTable Colouring Class
class CustomRenderer extends DefaultTableCellRenderer
{
private List<Color> desiredColors = new ArrayList<Color>();
public void setColors(Color incomingColor)
{
desiredColors.add(incomingColor);
}
public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int column)
{
Component cellComponent = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column);
for (int i = 0; i < desiredColors.size(); i++) {
if(row == i){
cellComponent.setBackground(desiredColors.get(i));
}
}
return cellComponent;
}
}
感谢您阅读...: - )