JComboBox选中项的背景色问题

Question

如何设置JComboBox选中项的背景色,请高手赐教,谢谢

Answer 1

自定义JComboBox的单元绘制器，初始化JComboBox时setRenderer(new MyCellRenderer()); class MyCellRenderer extends JLabel implements ListCellRenderer {
     public MyCellRenderer() {
         setOpaque(true);
     }     public Component getListCellRendererComponent(JList list,
                                                   Object value,
                                                   int index,
                                                   boolean isSelected,
                                                   boolean cellHasFocus) {         setText(value.toString());         Color background;
         Color foreground;         // check if this cell represents the current DnD drop location
         JList.DropLocation dropLocation = list.getDropLocation();
         if (dropLocation != null
                 && !dropLocation.isInsert()
                 && dropLocation.getIndex() == index) {             background = Color.BLUE;
             foreground = Color.WHITE;         // check if this cell is selected
         } else if (isSelected) {
             background = Color.RED;
             foreground = Color.WHITE;         // unselected, and not the DnD drop location
         } else {
             background = Color.WHITE;
             foreground = Color.BLACK;
         };         setBackground(background);
         setForeground(foreground);         return this;
     }
 }