我正在尝试动态更新 JTextArea,我当前的代码如下:
Object buttonPressed = e.getSource();
if (buttonPressed.equals(uploadSend)){
new Thread(){
@Override public void run(){
Upload send = new Upload();
send.sendupload();
for (String rec : uploadList.getUploadDetails()) {
uploadDetails.append(rec.toString());
uploadDetails.append("\n");
}
}
}.start();
}
这是通过在按下 JButton 时发送 eupload 来实现的,并且 JButton 不再卡住,但在整个上传任务完成之前,JTextArea 中的文本仍然不会显示。
我已经阅读了有关 SwingWorker 的内容,这是我所缺少的吗?我将如何在这里实现它?
最佳答案
很难知道为什么您的文本区域没有更新,因为您没有提供足够的上下文来诊断问题,请考虑提供 runnable example这说明了你的问题。这将减少困惑并获得更好的响应
但是,如果您想将当前逻辑转换为使用 SwingWorker
,您可以使用类似...
public class UploadWorker extends SwingWorker<List<String>, String> {
@Override
protected List<String> doInBackground() throws Exception {
Upload send = new Upload();
send.sendupload();
for (String rec : uploadList.getUploadDetails()) {
publish(rec);
}
return uploadList.getUploadDetails();
}
@Override
protected void process(List<String> chunks) {
for (String text : chunks) {
uploadDetails.append(rec);
uploadDetails.append("\n");
}
}
}
然后你只需使用类似的东西来调用它......
if (buttonPressed.equals(uploadSend)){
UploadWorker worker = new UploadWorker();
worker.execute();
}
看看Worker Threads and SwingWorker了解更多详情
关于java - 在GUI中动态更新JTextArea,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/25416045/