java - 无法禁用 DateEditor 的 JTextField 的编辑？

Question

我过去一直使用以下技术来禁用 JSpinner 的编辑。但是，它似乎不适用于 DateEditor 中的 JTextField。这个 editor.getTextField().setEditable(false) 在这种情况下不起作用是否有原因？有没有办法让它发挥作用？

驱动程序类别

public class CLIClockDriver {
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new ClockFrame();
            }
        });
    }
}

Swing 类

public class ClockFrame extends JFrame implements ActionListener {

    private static final long serialVersionUID = -7009835158496820266L;
    public static final Dimension SIZE = new Dimension(400, 200);

    private final Timer secondsTimer = new Timer(1000, this);
    private final FluentGridBagConstraints gbc = new FluentGridBagConstraints();
    private JPanel mainPanel;
    private JLabel clockLabel;
    private JSpinner newAlarmHourSpinner, newAlarmMinuteSpinner, newAlarmAMPMSpinner;

    public ClockFrame() {
        super();
        setLayout(new GridBagLayout());
        initializeGUIComponents();
        setPreferredSize(SIZE);
        setResizable(false);
        setTitle(Constants.APPLICATION_NAME);
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        pack();
        setVisible(true);
        secondsTimer.start();
    }



    private void initializeGUIComponents() {
        mainPanel = new JPanel(new GridBagLayout());

        clockLabel = new JLabel();
        updateClock();
        mainPanel.add(clockLabel, gbc.setXY(0, 0));

        newAlarmHourSpinner = new JSpinner();
        newAlarmHourSpinner.setModel(new CyclingSpinnerNumberModel(9, 1, 12, 1));
        DefaultEditor editor = new JSpinner.DefaultEditor(newAlarmHourSpinner);
        editor.getTextField().setColumns(2);
        editor.getTextField().setEditable(false);
        newAlarmHourSpinner.setEditor(editor);
        mainPanel.add(newAlarmHourSpinner, gbc.reset().setXY(0, 1));

        newAlarmMinuteSpinner = new JSpinner();
        SpinnerDateModel model = new SpinnerDateModel();
        model.setCalendarField(Calendar.MINUTE);
        newAlarmMinuteSpinner.setModel(model);
        DateEditor dateEditor = new JSpinner.DateEditor(newAlarmMinuteSpinner, "mm");
        editor.getTextField().setColumns(2);
        editor.getTextField().setEditable(false);
        newAlarmMinuteSpinner.setEditor(dateEditor);
        mainPanel.add(newAlarmMinuteSpinner, gbc.reset().setXY(1, 1));

        newAlarmAMPMSpinner = new JSpinner();
        newAlarmAMPMSpinner.setModel(new CyclingSpinnerListModel("AM", "PM"));
        editor = new JSpinner.DefaultEditor(newAlarmAMPMSpinner);
        editor.getTextField().setColumns(2);
        editor.getTextField().setEditable(false);
        newAlarmAMPMSpinner.setEditor(editor);
        mainPanel.add(newAlarmAMPMSpinner, gbc.reset().setXY(2, 1));

        add(mainPanel, gbc.reset().setXY(0, 0));
    }

    private void updateClock() {
        clockLabel.setText(Alarm.TIME_FORMAT.format(new Date()));
    }

    @Override
    public void actionPerformed(ActionEvent event) {
        if(event.getSource() == secondsTimer) {
            updateClock();
        }
    }


}

Answer 1

确保您的 GUI 是在 EDT 上创建的。

当我在 How to Use Spinners 上运行 Swing 教程中的 SpinnerDemo 代码时，它对我来说工作得很好。进行以下更改:

    ftf = getTextField(spinner);
    ftf.setEditable(false);

但是，当我没有在 EDT 上创建 GUI 时，我的简单旋转器测试程序也遇到了问题。