我正在使用netbeans及其gui builder来创建桌面应用程序.

为了在我的jTables中着色特殊单元格,我已经基于示例代码实现了自定义DefaultTableCellRenderer.到目前为止它的作用.

我的问题是覆盖函数“getTableCellRendererComponent()”的else情况.我不希望不在指定范围内的单元格变成“白色” – 我希望这些单元格以它们已有的颜色显示(例如,如果它们有,我不想将那些颜色更改为“白色”一直是“红色”).

如果有人可以帮助我,我会很高兴！

非常感谢提前.

斯特芬

class ColoredTableCellRenderer extends DefaultTableCellRenderer

{

/** constructor */

public ColoredTableCellRenderer(int rowToColorizeStart, int rowToColorizeStop, int columnToColorizeStart, int columnToColorizeStop, Color color)

{

mRowToColorizeStart = rowToColorizeStart;

mRowToColorizeStop = rowToColorizeStop;

mColumnToColorizeStart = columnToColorizeStart;

mColumnToColorizeStop = columnToColorizeStop;

mColor = color;

}

private int mRowToColorizeStart = 0;

public void setRowToColorizeStart(int rowToColorizeStart) {

mRowToColorizeStart = rowToColorizeStart;

}

public int getRowToColorizeStart() {

return mRowToColorizeStart;

}

private int mRowToColorizeStop = 0;

public void setRowToColorizeStop(int rowToColorizeStop) {

mRowToColorizeStop = rowToColorizeStop;

}

public int getRowToColorizeStop() {

return mRowToColorizeStop;

}

private int mColumnToColorizeStart = 0;

public void setColumnToColorizeStart(int columnToColorizeStart) {

mColumnToColorizeStart = columnToColorizeStart;

}

public int getColumnToColorizeStart() {

return mColumnToColorizeStart;

}

private int mColumnToColorizeStop = 0;

public void setColumnToColorizeStop(int columnToColorizeStop) {

mColumnToColorizeStop = columnToColorizeStop;

}

public int getColumnToColorizeStop() {

return mColumnToColorizeStop;

}

private Color mColor = Color.WHITE;

public void setColor(Color color) {

mColor = color;

}

public Color getColor() {

return mColor;

}

@Override

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);

if( (row >= getRowToColorizeStart()) && (row <= getRowToColorizeStop()) && (column >= getColumnToColorizeStart()) && (column <= getColumnToColorizeStop()) && (isSelected == false) ) {

cellComponent.setBackground(getColor());

} else {

cellComponent.setBackground(Color.WHITE);

}

return cellComponent;

}

}

解决方法:

How to write a custom DefaultTableCellRenderer to colorize specific cells “only”, Java

代码行

谈论什么发生了

>是否选择了单元格(boolean isSelected)

>如果选择了单元格和/或具有Focus也是(boolean hasFocus)

>对于JTable中的行(int行)

>来自JTable的列(int列)

然后你可以改变字体,边框,颜色,图标e.i.

通知—>不要在XxxRenderer中更改对象值,永远不要尝试避免这种情况

编辑

> JTable有两个dimmension只定义了行,看看prepareRenderer

> prepareRenderer被指定用于行着色,my question can help you或here,不要忘记覆盖int modelRow = convertRowIndexToModel(row);,在大多数情况下你可以丢失索引模型v.s.查看,因为可以对JTable进行排序或过滤

标签：java,swing,jtable,background-color,tablecellrenderer

来源： https://codeday.me/bug/20190826/1726155.html