java – JTable中的JSpinner(Time)

我试图将JSpinner实现到JTable的时间,它在第一次看起来是preaty goot但是在失去了单元格的焦点后,编辑的单元格被设置为“Thu Jan 01 time UTC 1970”时间正在被设置正确.如何从时间中删除日期？

这是我的洞SpinnerEditor.class,添加了一些评论.

代码：

public SpinnerEditor(String timeFormat) {
    super(new JTextField());

    // Default Time I want to Display (1 Hour)
    Time date = new Time(3600000);
    SpinnerDateModel timeModel = new SpinnerDateModel(date, null, null,Calendar.MINUTE);
    spinner = new JSpinner(timeModel);
    editorDate = new JSpinner.DateEditor(spinner, timeFormat);
    spinner.setEditor(editorDate);


    editorDate = ((JSpinner.DateEditor)spinner.getEditor());
    // println result : "Thu Jan 01 01:00:00 UTC 1970"
    System.out.println(editorDate.getTextField().getValue());
    textField = editorDate.getTextField();
    textField.addFocusListener( new FocusListener() {
        public void focusGained( FocusEvent fe ) {
            System.err.println("Got focus");
            //textField.setSelectionStart(0);
            //textField.setSelectionEnd(1);
            SwingUtilities.invokeLater( new Runnable() {
                public void run() {
                    if ( valueSet ) {
                        textField.setCaretPosition(1);
                    }
                }
            });
        }
        public void focusLost( FocusEvent fe ) {
        }
    });
    textField.addActionListener( new ActionListener() {
        public void actionPerformed( ActionEvent ae ) {
            stopCellEditing();
        }
    });
}

// Prepares the spinner component and returns it.
public Component getTableCellEditorComponent(
    JTable table, Object value, boolean isSelected, int row, int column
) {
    if ( !valueSet ) {
        spinner.setValue(value);
    }
    SwingUtilities.invokeLater( new Runnable() {
        public void run() {
            textField.requestFocus();
        }
    });
    return spinner;
}

public boolean isCellEditable( EventObject eo ) {
    System.err.println("isCellEditable");
    if ( eo instanceof KeyEvent ) {
        KeyEvent ke = (KeyEvent)eo;
        System.err.println("key event: "+ke.getKeyChar());    
        textField.setText(String.valueOf(ke.getKeyChar()));
        valueSet = true;
    } else {
        valueSet = false;
    }
    return true;
}

// Returns the spinners current value.
public Object getCellEditorValue() {
    return spinner.getValue();
}

public boolean stopCellEditing() {
    System.err.println("Stopping edit");
    // after stopcellEditing is called the TextField is being set with the wrong values (Thu Jan 01 01:00:00 UTC 1970)
    super.stopCellEditing();
    try {
        if( editorNumeric!=null) 
        {
            editorNumeric.commitEdit();
            spinner.commitEdit();

        }
        if( editorDate!=null)
        {
            SimpleDateFormat lFormat = new SimpleDateFormat("HH:mm");
            textField.setText((spinner.getValue() != null) ? lFormat.format(spinner.getValue()) : "");
        }

    } catch ( java.text.ParseException e ) {
        JOptionPane.showMessageDialog(null,
            "Invalid value, discarding.");
    }

    return true;
}

解决方法:

你让编辑和渲染器感到困惑.编辑器是在编辑单元格时显示的小部件.当不再编辑单元格时,单元格渲染器用于“绘制”单元格.这一切都在this paragraph中解释过.我真的建议你阅读它,因为它清楚地解释了如何执行表格渲染.

你应该做的是,为所涉及的列使用Custom CellRenderer,以便它使用你的日期格式化程序.

有关单元格编辑器和单元格渲染器的更多信息,请查看this tutorial.

标签：jspinner,java,date,swing,jtable
来源： https://codeday.me/bug/20190928/1826181.html