单选按钮上的动作侦听器 [英] Action Listener on a radio button

问题描述

我想根据单选按钮的选择设置文本框的可编辑选项?如何在单选按钮上编写动作侦听器?

I would like to set editable option of a text box based on the selection of a radio button? How to code the action listener on the radio button?

推荐答案

这是我在这种情况下会使用的解决方案.

This is the solution that I would use in this case.

    //The text field
    JTextField textField = new JTextField();

    //The buttons
    JRadioButton rdbtnAllowEdit = new JRadioButton();
    JRadioButton rdbtnDisallowEdit = new JRadioButton();

    //The Group, make sure only one button is selected at a time in the group
    ButtonGroup editableGroup = new ButtonGroup();
    editableGroup.add(rdbtnAllowEdit);
    editableGroup.add(rdbtnDisallowEdit);

    //add allow listener
    rdbtnAllowEdit.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            textField.setEditable(true);

        }
    });

    //add disallow listener
    rdbtnDisallowEdit.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            textField.setEditable(false);

        }
    });

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