GUI在运行ActionEvent之前无法直观更新 [英] GUI not updating visually before running ActionEvent

问题描述

为了进一步说明，我有一个看起来像这样的GUI：

To expound a little more, I have a GUI that looks like:

然后我在OK按钮上有一个动作监听器，起始如下：

Then I have an action listener on the OK button that starts like:

//OK Button Action Listener
private void okButtonActionPerformed(ActionEvent e) {   
    //Enable/Disable Buttons
    okButton.setEnabled(false);
    cancelButton.setEnabled(true);
    updateCheckbox.setEnabled(false);
    //Move on to a series of other methods here...

哪个应该，从理论上讲，要做到这一点：

Which should, in theory, make this happen:

但是，我会得到以下内容，直到所有方法和连接到OK按钮的其他内容都完成：

However, instead, I get the following until ALL methods and other things connected to the OK button are completed:

这个显然不可能发生，因为这个想法是让取消按钮可用，OK按钮和其他几个勾选框在程序的持续时间内不可用（图2），相反，它在半状态下冻结（图3）。有没有办法解决这个问题？

This obviously can't happen, because the idea is to make the cancel button available and the OK button and several other tick-boxes unavailable for the duration of the program (Image 2), where, instead, it freezes in a half-state (Image 3). Is there any way to combat this?

推荐答案

每次从GUI执行逻辑时，你应该使用以下的SwingWorker方式：

Every time you execute logic from the GUI you should be using the SwingWorker in the following way:

SwingWorker myWorker= new SwingWorker<String, Void>() {
    @Override
    protected String doInBackground() throws Exception {
        //Execute your logic
        return null;
    }
};
myWorker.execute();

如果要从此逻辑内部更新GUI，请使用InvokeLater：

If you want to update the GUI from inside this logic use InvokeLater:

SwingUtilities.invokeLater(new Runnable() {
    @Override
    public void run() {
        //To update your GUI
    }
});

通过这种方式，您可以确保您的逻辑和GUI保持响应。

With this you can be sure that both your logic and your GUI stay responsive.

修改：

您还可以使用 invokeAndWait 如果这更符合您的需求。 链接到相关答案

You could also use invokeAndWait if this suits your needs more. Link to related answer

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