java - 当 setAutoCreateRowSorter 为真时刷新 JTable

Question

我写了一个默认的表格渲染如下:

public class CustTableRenderer extends DefaultTableCellRenderer{

    @Override
    public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, boolean hasFocus, int row, int col) {
        Component comp = super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, col);
        try {

            Object cellObj = table.getModel().getValueAt(row, 7); 
            double cellValue = (Double) cellObj;

            if (cellValue < 0) {
                comp.setBackground(new Color(255, 48, 48));
            } else if (cellValue == 0) {
                comp.setBackground(new Color(173, 255, 47));
            } else {
                comp.setBackground(Color.white);
            }

            if (isSelected) {
                comp.setBackground(new Color(71, 60, 139));
                TableModel model = table.getModel();
            }
        } catch (Exception e) {
            e.printStackTrace();
        }
        return comp;
    }
}

为了突出显示包含第 7 列负值的行，我还将 setAutoCreateRowSorter 设置为 true。我的问题是，当我单击标题以根据它排序时，表格已排序但突出显示的行未更改，因此突出显示了错误的行。

表格排序后如何重绘？

Answer 1

传递给渲染器的坐标是在 View 坐标系中，你必须在访问模型之前将它们转换为模型坐标:

  int modelRow = table.convertRowIndexToModel(row);
  int modelColumn = table.convertColumnIndexToModel(column);
  cellObject = table.getModel().getValueAt(modelRow, modelColumn);