我应该如何刷新表格？

Question

我在scrollPane上有一些表格，我的一些单元格被涂成不同的颜色。当我点击某一行的单元格时，或者行应该改变它们的颜色，但只有当我滚动我的表时，如果多行应该着色，重绘才能正常工作。 如何通过重写getTableCellRenderrerComponent（）来重绘单元格后对JTable进行完整更新？ 谢谢。

我的表类：

class MyGrid extends JTable { 
    private TNotifyEvent onCustomDrawCell; 

    public MyGrid() { 
     this.setSelectionMode(0); 
    } 

    public TNotifyEvent getOnCustomDrawCell() { 
     return this.onCustomDrawCell; 
    } 

    public void setOnCustomDrawCell(TNotifyEvent onCustomDrawCell) { 
     this.onCustomDrawCell = onCustomDrawCell; 
    } 
} 

使用我的表

MyGrid table = new MyGrid(); 
JScrollPane scroll = new JScrollPane(table, ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED); 

table.setOnCustomDrawCell(() -> { 
     for (int i = 0; i < table.getColumnModel().getColumnCount(); i++) { 
      table.getColumnModel().getColumn(i).setCellRenderer(new DefaultTableCellRenderer() { 
       JLabel lbl = new JLabel(); 

       @Override 
       public Component getTableCellRendererComponent(JTable table, Object value, boolean isSelected, 
                   boolean hasFocus, int row, int column) { 
        lbl = (JLabel) super.getTableCellRendererComponent(table, value, isSelected, hasFocus, row, column); 
        lbl.setText(String.valueOf(value)); 
        MyItem item = new MyItem(); 
        item.setValue((Vector) model.getDataVector().get(row)); 
        item.setCanvas(lbl); 
        MutableBoolean aDoneMutable = new MutableBoolean(false); 
        getContentStyle(null, item, item.getCanvas(), null); 
        drawCells(null, item.getCanvas(), item, aDoneMutable); 
        return lbl; 
       } 
      }); 
     } 
    return true; 
    }); 

    public static void getContentStyle(Object Sender, MyItem ARecord, JLabel AItem, TcxStyle AStyle) { 
    try { 
     if (Integer.parseInt(String.valueOf(ARecord.getValue().get(3))) == 0) { 
      AItem.setOpaque(true); 
      AItem.setBackground(Color.GRAY); 
     } else if (ARecord.getValue().get(4).equals("222")) { 
      AItem.setOpaque(true); 
      AItem.setBackground(Color.PINK); 
     } else { 
      AItem.setOpaque(true); 
      AItem.setBackground(null); 
     } 
    } catch (Exception e) { 
    } 
} 

public static void drawCells(Object Sender, JLabel ACanvas, MyItem AViewInfo, final MutableBoolean mutableADone) { 
    boolean ADone = mutableADone.getValue(); 
    try { 
     if((AViewInfo.getValue().get(4).equals("44")) && (!AViewInfo.isSelected())) { 
      ACanvas.setForeground(Color.black); 
      ACanvas.setOpaque(true); 
      ACanvas.setBackground(PictureUtils.createColorfromString("$CCE6FF")); 
      AViewInfo.setCanvas(ACanvas); 
     } else { 
      if((AViewInfo.getValue().get(5).equals("555")) && (AViewInfo.isSelected()) && (AViewInfo.isHasFocus())) { 
       ACanvas.setOpaque(true); 
       ACanvas.setBackground(PictureUtils.createColorfromString("$CCE6FF")); 
       AViewInfo.setCanvas(ACanvas); 
      } 
     } 
    } catch (Exception e) {} 
    mutableADone.setValue(ADone); 
} 

而且myItem类：

class MyItem { 
    private String columnName; 
    private Vector value; 
    private JLabel canvas; 
    private Integer index; 
    private boolean isSelected; 
    private boolean hasFocus; 

    public MyItem() { 
    } 

    public String getColumnName() { 
     return this.columnName; 
    } 

    public void setColumnName(String columnName) { 
     this.columnName = columnName; 
    } 

    public Vector getValue() { 
     return this.value; 
    } 

    public void setValue(Vector value) { 
     this.value = value; 
    } 

    public JLabel getCanvas() { 
     return this.canvas; 
    } 

    public void setCanvas(JLabel canvas) { 
     this.canvas = canvas; 
    } 

    public boolean isSelected() { 
     return this.isSelected; 
    } 

    public void setSelected(boolean selected) { 
     this.isSelected = selected; 
    } 

    public boolean isHasFocus() { 
     return this.hasFocus; 
    } 

    public void setHasFocus(boolean hasFocus) { 
     this.hasFocus = hasFocus; 
    } 

    public Integer getIndex() { 
     return this.index; 
    } 

    public void setIndex(Integer index) { 
     this.index = index; 
    } 
} 

我试图用tableChange（）侦听器，但它抛出计算器以前的错误显示我的表格

编辑 另外我忘了说：当我调试我的代码时，表格颜色很好。 并在除scrollPane视口外的任何位置重绘表格。

Answer 1

只要修改一个适当的Swing组件，你需要告知组件重绘自己：

public void setOnCustomDrawCell(TNotifyEvent onCustomDrawCell) { 
    this.onCustomDrawCell = onCustomDrawCell; 
    repaint(); // added this 
}