我如何使用swingworker类将文本附加到textarea? [英] How I append text to textarea with using swingworker class?
问题描述
我想在循环中使用swingworkerclass在java中追加文本。例如:
I want to append text in loop with swingworkerclass in java. for ex :
while(true)
{
mytextarea.append("sometext");
if(some_condition)
{break;}
}
我想和swingworker一起工作,因为我想看看textarea上的每一个uptade。
对于这段代码,我只看到我的过程完成时的更新。
I want this with swingworker because I want to see every uptade on textarea. For this code I only see update when my proccess done.
我不想在另一种情况下使用swingworker样本。
请在这里给我一些代码。谢谢。
I dont want swingworker samples for another situations. Please give me some code here.Thanks.
推荐答案
SwingWorker不在这里。您的代码未在EDT中运行,因此您看不到更新。您可以使用SwingUtilities.invokeLater(...)在EDT中执行代码。但是不要在EDT中执行整个while循环,因为这会阻止它并且没有更新/事件(重绘,鼠标点击)。这是一个简单的代码示例:
SwingWorker is not right here. Your code is not running in the EDT so you doesn´t see updates. You can use SwingUtilities.invokeLater(...) to execute your code in the EDT. But do not execute the whole while-loop in the EDT because this will block it and no updates / events (repaints, Mouseclicks). Here is a simply code-example:
while(true) {
SwingUtilities.invokeLater(new Runnable{
public void run() {
textfield.setText(....);
}
});
if(condition) break;
}
有关更多信息,请查看 http://java.sun.com/products/jfc/tsc/articles/threads/threads1.html 或本书: http://filthyrichclients.org
For more Information look at http://java.sun.com/products/jfc/tsc/articles/threads/threads1.html or this book: http://filthyrichclients.org
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