刷新jtable中的行的背景颜色

我想设置一个Swing Jtable的行的颜色。 我使用这个类来扩展Jtable在networking上的build议。

public class ColorTable extends JTable { private static final long serialVersionUID = 1L; private Map rowColor = new HashMap(); private Map columnColor = new HashMap(); private Color cellColor; private Color defaultColor; public ColorTable( TableModel model ) { super( model ); } public void setRowColor( int row, Color c) { rowColor.put( new Integer( row ), c ); } public void setColumnColor( int column, Color c ) { columnColor.put( new Integer( column ), c ); } public void setCellColor( Color c ) { cellColor = c; } public Class getColumnClass(int column) { return getValueAt(0, column).getClass(); } public Component prepareRenderer( TableCellRenderer renderer, int row, int column ) { Component c = super.prepareRenderer( renderer, row, column ); if ( defaultColor == null ) defaultColor = c.getBackground(); // Color order is as follows: // rowSelection, checkBox toggle for row color, column color, cell color if ( ! isRowSelected( row ) ) { Color color = (Color) rowColor.get( new Integer( row ) ); if ( color == null || Boolean.FALSE.equals( getModel().getValueAt( row, 0 ) ) ) color = (Color) columnColor.get( new Integer( column ) ); if ( color == null ) { // cell color only if cell has special value, for example purposes, // if the cell value begins with a 2 Object value = getValueAt( row, column ); if ( value != null && value.toString().startsWith( "2" ) ) color = cellColor; } if ( color != null ) c.setBackground( color ); else c.setBackground( defaultColor ); } return c; } public void resetColor(Color color) { for(int i=0;i<this.getRowCount();i++) this.setRowColor(i, color); } } 

我简单地添加了方法resetColor（Color color），以初始化所有具有相同颜色的行。

它接缝工作在第一次使用，但是当我想改变颜色，我得到的问题。 例如，如果我在一个button动作侦听器中执行解码代码，我只是在第一次迭代时正确着色表格，并且从不改变背景。

 deployTable.resetColor(Color.green); // set red background to the for (Integer x : indexes) { System.out.println("index "+x+" red!"); deployTable.setRowColor(x, Color.red); } deployTable.revalidate(); 

有没有人有什么想法是什么？

谢谢，Ste

Answer 1

例如，

 import java.awt.*; import java.awt.event.ActionEvent; import java.awt.event.ActionListener; import java.util.Random; import java.util.Vector; import javax.swing.*; import javax.swing.event.ListSelectionEvent; import javax.swing.event.ListSelectionListener; import javax.swing.event.TableModelEvent; import javax.swing.event.TableModelListener; import javax.swing.table.AbstractTableModel; import javax.swing.table.TableCellRenderer; public class Forum implements ListSelectionListener { private JFrame frame = new JFrame("Frame"); private JPanel fatherCenter = new JPanel(); private JScrollPane tableScroll = new JScrollPane(); private myTableModel tableModel; private JTable dialogTable; private JButton blueButton; private ListSelectionModel lsDialog; private Color clr; private Color clr1; private void addComponentsToPane(Container pane) { tableModel = new myTableModel(); dialogTable = new JTable(tableModel) { private static final long serialVersionUID = 1L; @Override public Component prepareRenderer(TableCellRenderer renderer, int row, int column) { Component comp = super.prepareRenderer(renderer, row, column); JComponent jc = (JComponent) comp;//for Custom JComponent if (!isRowSelected(row)) { int modelRow = convertRowIndexToModel(row); boolean type = (Boolean) getModel().getValueAt(modelRow, 2); boolean type1 = (Boolean) getModel().getValueAt(modelRow, 3); comp.setForeground(Color.black); if ((type) && (!type1)) { comp.setBackground(clr1); } else if ((!type) && (type1)) { comp.setBackground(Color.orange); } else if ((!type) || (!type1)) { comp.setBackground(Color.red); } else { comp.setBackground(row % 2 == 0 ? getBackground() : getBackground().darker()); } dialogTable.convertRowIndexToView(0); } else { comp.setForeground(Color.blue); } if (!isCellEditable(row, column)) { comp.setForeground(Color.red); comp.setBackground(Color.magenta); } return comp; } }; tableScroll = new JScrollPane(dialogTable, ScrollPaneConstants.VERTICAL_SCROLLBAR_AS_NEEDED, ScrollPaneConstants.HORIZONTAL_SCROLLBAR_AS_NEEDED); tableScroll.setBorder(null); dialogTable.getTableHeader().setReorderingAllowed(false); dialogTable.setSelectionMode(ListSelectionModel.SINGLE_SELECTION); lsDialog = dialogTable.getSelectionModel(); dialogTable.putClientProperty("terminateEditOnFocusLost", Boolean.TRUE); dialogTable.setRowHeight(20); dialogTable.setRowMargin(2); ListSelectionModel rowSelMod = dialogTable.getSelectionModel(); //ListSelectionModel colSelMod = dialogTable.getColumnModel().getSelectionModel(); rowSelMod.addListSelectionListener(this); //colSelMod.addListSelectionListener(this); blueButton = new JButton(" Blue BackGround "); blueButton.setPreferredSize(new Dimension(100, 30)); blueButton.addActionListener(new ActionListener() { public void actionPerformed(ActionEvent e) { if (clr == Color.white) { clr = Color.orange; clr1 = Color.yellow; } else { clr = Color.white; clr1 = Color.black; } System.out.println(clr); dialogTable.setBackground(clr); dialogTable.repaint(); } }); fatherCenter = new JPanel(); fatherCenter.setLayout(new BorderLayout(10, 10)); fatherCenter.add(tableScroll, BorderLayout.CENTER); fatherCenter.add(blueButton, BorderLayout.SOUTH); pane.add(fatherCenter); } private void addData() { Runnable doRun1 = new Runnable() { @Override public void run() { tableModel.resetTable(); Vector<String> tbl = new Vector<String>(); Vector<Object> tbl1 = new Vector<Object>(); Random rnd = new Random(); tbl.add("Integer"); tbl.add("Double"); tbl.add("Boolean"); tbl.add("Boolean"); tbl.add("String"); tableModel.setColumnNames(tbl); for (int row = 0; row < 30; row++) { tbl1 = null; tbl1 = new Vector<Object>(); tbl1.addElement(row + 1); tbl1.addElement(rnd.nextInt(25) + 3.14); tbl1.addElement((row % 3 == 0) ? false : true); tbl1.addElement((row % 5 == 0) ? false : true); if (row % 7 == 0) { tbl1.add(("Canc")); } else if (row % 6 == 0) { tbl1.add(("Del")); } else { tbl1.add(("New")); } tableModel.addRow(tbl1); } addTableListener(); } }; SwingUtilities.invokeLater(doRun1); } private void addTableListener() { tableModel.addTableModelListener(new TableModelListener() { @Override public void tableChanged(TableModelEvent tme) { if (tme.getType() == TableModelEvent.UPDATE) { System.out.println(""); System.out.println("Cell " + tme.getFirstRow() + ", " + tme.getColumn() + " changed. The new value: " + tableModel.getValueAt(tme.getFirstRow(), tme.getColumn())); } } }); } public void valueChanged(ListSelectionEvent le) { int row = dialogTable.getSelectedRow(); int col = dialogTable.getSelectedColumn(); String str = "Selected Row(s): "; int[] rows = dialogTable.getSelectedRows(); for (int i = 0; i < rows.length; i++) { str += rows[i] + " "; } str += "Selected Column(s): "; int[] cols = dialogTable.getSelectedColumns(); for (int i = 0; i < cols.length; i++) { str += cols[i] + " "; } str += "Selected Cell: " + dialogTable.getSelectedRow() + ", " + dialogTable.getSelectedColumn(); System.out.println(str); Object value = dialogTable.getValueAt(row, col); System.out.println(String.valueOf(value)); } private void createAndShowGUI() { frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE); frame.setLayout(new BorderLayout(10, 10)); addComponentsToPane(frame.getContentPane()); addData(); frame.setLocation(150, 150); frame.setPreferredSize(new Dimension(400, 647)); frame.pack(); frame.setVisible(true); } public static void main(String[] args) { Forum osFrame = new Forum(); } public Forum() { javax.swing.SwingUtilities.invokeLater(new Runnable() { @Override public void run() { createAndShowGUI(); } }); } private class myTableModel extends AbstractTableModel { private static final long serialVersionUID = 1L; private Vector<Vector<Object>> data; private Vector<String> colNames; private boolean[] _columnsVisible = {true, true, true, true, true}; myTableModel() { this.colNames = new Vector<String>(); this.data = new Vector<Vector<Object>>(); } myTableModel(Vector<String> colnames) { this.colNames = colnames; this.data = new Vector<Vector<Object>>(); } public void resetTable() { this.colNames.removeAllElements(); this.data.removeAllElements(); } public void setColumnNames(Vector<String> colNames) { this.colNames = colNames; this.fireTableStructureChanged(); } public void addRow(Vector<Object> data) { this.data.add(data); //this.fireTableDataChanged(); //this.fireTableStructureChanged(); this.fireTableRowsInserted(data.size() - 1, data.size() - 1); } public void removeRowAt(int row) { this.data.removeElementAt(row); //this.fireTableDataChanged(); this.fireTableRowsDeleted(row - 1, data.size() - 1); } @Override public int getColumnCount() { return this.colNames.size(); } @Override public Class<?> getColumnClass(int colNum) { switch (colNum) { case 0: return Integer.class; case 1: return Double.class; case 2: return Boolean.class; case 3: return Boolean.class; default: return String.class; } } @Override public boolean isCellEditable(int row, int colNum) { switch (colNum) { case 2: return false; default: return true; } } @Override public String getColumnName(int colNum) { return this.colNames.get(colNum); } @Override public int getRowCount() { return this.data.size(); } @Override public Object getValueAt(int row, int col) { Vector<Object> value = this.data.get(row); return value.get(col); } @Override public void setValueAt(Object newVal, int row, int col) { Vector<Object> aRow = data.elementAt(row); aRow.remove(col); aRow.insertElementAt(newVal, col); fireTableCellUpdated(row, col); } public void setColumnVisible(int index, boolean visible) { this._columnsVisible[index] = visible; this.fireTableStructureChanged(); } } } 

Answer 2

这听起来可能会让我回答我的一个问题。 但我发现另一个修复我的错误。 但是我不确定原因。 我在validation之前调用一个epaint，一切正常。

 deployTable.repaint(); deployTable.revalidate(); 

我想我没有真正清楚重绘和重新validation内的区别。 任何人都可以解释给我？