使用 Swingworker 不断更新 GUI [英] Using Swingworker to constantly update a GUI

问题描述

在我的代码中，用户按下一个按钮，然后我希望它调用一个 SwingWorker 后台线程，在那里我基本上遍历一个列表，将它与其他数据交叉引用，然后使用 JLabel 为每个更新 GUI通过我的循环.问题是我知道我应该在 doInBackground() 中执行此操作，但是我没有什么可返回的，而且我还想在每次循环循环时使用新的 JLabel 更新 JPanel.我该怎么做呢?谢谢！

In my code, the user presses a button, and then I want this to invoke a SwingWorker background thread, where I basically loop through a list, cross reference it with other data, and then update the GUI with a JLabel for every pass through my loop. The problem is I know I should do this in doInBackground(), but I have nothing to return, and I also want to update the JPanel with a new JLabel every time my loop loops. How do I do this? Thanks!

推荐答案

这是一个我非常喜欢的完整示例 Swing Worker例子

Here is a complete example i really like Swing Worker Example

你必须使用 publish() 并覆盖 process()

You have to use publish() and override process()

示例:

class Worker extends SwingWorker<Void, String> {

    @Override
    protected void doInBackground() throws Exception {
       //here you make heavy task this is running in another thread not in EDT
       //process after some time call publish() 


    }

    @Override
    protected void process(List<String> chunks) {
        //this is executed in the EDT
        //here you update your label
    }
}

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