如何将结果从EDT传递回另一个线程？ [英] How to pass results from EDT back to a different thread?

问题描述

我有以下用例：

我在线程A（不是EDT）中执行代码。然后我想问用户一个问题，但这必须在EDT上完成，因为它涉及Swing代码（打开一个对话框等）。最后，我想将用户的回答传递给线程A，所以它可以继续。

I have code executing in Thread A (not EDT). Then I want to ask the user a question, but this must be done on the EDT as it involves Swing code (opening a dialog etc). Finally, I want to pass the user's answer back to Thread A, so it can continue.

我很难找到一个好方法将用户的回答传递给线程A.你是怎么做到的？

I'm struggling to find a good way to pass the user's answer back to Thread A. How do you do this?

推荐答案

FutureTask<Integer> dialogTask = new FutureTask<Integer>(new Callable<Integer>() {
  @Override public Integer call() {
    return JOptionPane.showConfirmDialog(...);
  }
});
SwingUtilities.invokeLater(dialogTask);
int result = dialogTask.get();

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